4117 - done with delimited continuations

At least this particular implementation of them. Let's play with them
now for a while, see if they're fully equivalent to shift/reduce.

16 files changed, 1019 insertions, 842 deletions

diff --git a/076continuation.cc b/076continuation.cc
index 5311fd67..76b6abc1 100644
--- a/076continuation.cc
+++ b/076continuation.cc
@@ -31,6 +31,12 @@
 //:  * 'return-continuation-until-mark' can take ingredients to return just
 //:    like other 'return' instructions. It just implicitly also returns a
 //:    continuation as the first result. See continuation4.mu.
+//:  * Conversely, you can pass ingredients to a continuation when calling it,
+//:    to make it available to products of 'return-continuation-until-mark'.
+//:
+//: Inspired by James and Sabry, "Yield: Mainstream delimited continuations",
+//: Workshop on the Theory and Practice of Delimited Continuations, 2011.
+//: https://www.cs.indiana.edu/~sabry/papers/yield.pdf
 //:
 //: Caveats:
 //:  * At the moment we can't statically type-check continuations. So we raise
diff --git a/continuation1.mu b/continuation1.mu
index 23e92f8f..11811c1d 100644
--- a/continuation1.mu
+++ b/continuation1.mu
@@ -1,6 +1,11 @@
-# example program showing that 'return-continuation-until-mark' can 'pause' a
+# Example program showing that 'return-continuation-until-mark' can 'pause' a
 # function call, returning a continuation, and that calling the continuation
 # can 'resume' the paused function call.
+#
+# Expected output:
+#   1
+#   2
+#   3
 
 def main [
   local-scope
diff --git a/continuation2.mu b/continuation2.mu
index dda9d566..a522b0bf 100644
--- a/continuation2.mu
+++ b/continuation2.mu
@@ -1,5 +1,10 @@
-# example program showing that a 'paused' continuation can be 'resumed'
-# multiple times from the same point (but with changes to data)
+# Example program showing that a 'paused' continuation can be 'resumed'
+# multiple times from the same point (but with changes to data).
+#
+# Expected output:
+#   1
+#   2
+#   3
 
 def main [
   local-scope
diff --git a/continuation3.mu b/continuation3.mu
index 043828d5..57d54084 100644
--- a/continuation3.mu
+++ b/continuation3.mu
@@ -1,5 +1,13 @@
-# example program showing that a function call can be 'paused' multiple times,
-# creating different continuation values
+# Example program showing that a function call can be 'paused' multiple times,
+# creating different continuation values.
+#
+# Expected output:
+#   caller 0
+#   callee 0
+#   caller 1
+#   callee 1
+#   caller 2
+#   callee 2
 
 def main [
   local-scope
diff --git a/continuation4.mu b/continuation4.mu
index 26f72bf4..adbb70d9 100644
--- a/continuation4.mu
+++ b/continuation4.mu
@@ -1,5 +1,12 @@
-# example program showing 'return-continuation-until-mark' return other values
-# alongside continuations
+# Example program showing 'return-continuation-until-mark' return other values
+# alongside continuations.
+#
+# Print out a given list of numbers.
+#
+# Expected output:
+#   1
+#   2
+#   3
 
 def main [
   local-scope
diff --git a/continuation5.mu b/continuation5.mu
index fb00a4f5..663d99c2 100644
--- a/continuation5.mu
+++ b/continuation5.mu
@@ -3,6 +3,11 @@
 #
 # Print out a list of numbers, first adding 0 to the first, 1 to the second, 2
 # to the third, and so on.
+#
+# Expected output:
+#   1
+#   3
+#   5
 
 def main [
   local-scope
diff --git a/html/020run.cc.html b/html/020run.cc.html
index 9ed83089..d288c1ef 100644
--- a/html/020run.cc.html
+++ b/html/020run.cc.html
@@ -131,423 +131,425 @@ if ('onhashchange' in window) {
 <span id="L64" class="LineNr"> 64 </span>  <span class="Conceal">¦</span> <span class="Comment">// Running One Instruction</span>
 <span id="L65" class="LineNr"> 65 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>is_label<span class="Delimiter">)</span> <span class="Delimiter">{</span> ++current_step_index<span class="Delimiter">();</span>  <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Delimiter">}</span>
 <span id="L66" class="LineNr"> 66 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span>Initial_callstack_depth + Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth<span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <a href='028call_return.cc.html#L162'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">())</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L67" class="LineNr"> 67 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L228'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">)</span> != <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L68" class="LineNr"> 68 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;something wrote to location 0; this should never happen</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L69" class="LineNr"> 69 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L70" class="LineNr"> 70 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L71" class="LineNr"> 71 </span>  <span class="Conceal">¦</span> <span class="Comment">// read all ingredients from memory, each potentially spanning multiple locations</span>
-<span id="L72" class="LineNr"> 72 </span>  <span class="Conceal">¦</span> vector&lt;vector&lt;<span class="Normal">double</span>&gt; &gt; ingredients<span class="Delimiter">;</span>
-<span id="L73" class="LineNr"> 73 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>should_copy_ingredients<span class="Delimiter">())</span> <span class="Delimiter">{</span>
-<span id="L74" class="LineNr"> 74 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span>
-<span id="L75" class="LineNr"> 75 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)));</span>
-<span id="L76" class="LineNr"> 76 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L77" class="LineNr"> 77 </span>  <span class="Conceal">¦</span> <span class="Comment">// instructions below will write to 'products'</span>
-<span id="L78" class="LineNr"> 78 </span>  <span class="Conceal">¦</span> vector&lt;vector&lt;<span class="Normal">double</span>&gt; &gt; products<span class="Delimiter">;</span>
-<span id="L79" class="LineNr"> 79 </span>  <span class="Conceal">¦</span> <span class="Comment">//: This will be a large switch that later layers will often insert cases</span>
-<span id="L80" class="LineNr"> 80 </span>  <span class="Conceal">¦</span> <span class="Comment">//: into. Never call 'continue' within it. Instead, we'll explicitly</span>
-<span id="L81" class="LineNr"> 81 </span>  <span class="Conceal">¦</span> <span class="Comment">//: control which of the following stages after the switch we run for each</span>
-<span id="L82" class="LineNr"> 82 </span>  <span class="Conceal">¦</span> <span class="Comment">//: instruction.</span>
-<span id="L83" class="LineNr"> 83 </span>  <span class="Conceal">¦</span> <span class="Normal">bool</span> write_products = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L84" class="LineNr"> 84 </span>  <span class="Conceal">¦</span> <span class="Normal">bool</span> fall_through_to_next_instruction = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L85" class="LineNr"> 85 </span>  <span class="Conceal">¦</span> <span class="Normal">switch</span> <span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>operation<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L86" class="LineNr"> 86 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Comment">// Primitive Recipe Implementations</span>
-<span id="L87" class="LineNr"> 87 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">case</span> <a href='010vm.cc.html#L189'>COPY</a>: <span class="Delimiter">{</span>
-<span id="L88" class="LineNr"> 88 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> copy<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> ingredients<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">(),</span> inserter<span class="Delimiter">(</span>products<span class="Delimiter">,</span> products<span class="Delimiter">.</span>begin<span class="Delimiter">()));</span>
-<span id="L89" class="LineNr"> 89 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L90" class="LineNr"> 90 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L91" class="LineNr"> 91 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Comment">// End Primitive Recipe Implementations</span>
-<span id="L92" class="LineNr"> 92 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">default</span>: <span class="Delimiter">{</span>
-<span id="L93" class="LineNr"> 93 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> cout &lt;&lt; <span class="Constant">&quot;not a primitive op: &quot;</span> &lt;&lt; <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>operation &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
-<span id="L94" class="LineNr"> 94 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L95" class="LineNr"> 95 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L96" class="LineNr"> 96 </span>  <span class="Conceal">¦</span> <span class="Comment">//: used by a later layer</span>
-<span id="L97" class="LineNr"> 97 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>write_products<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L98" class="LineNr"> 98 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>products<span class="Delimiter">)</span> &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L99" class="LineNr"> 99 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>products<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; vs &quot;</span> &lt;&lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: failed to write to all products in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L100" class="LineNr">100 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L101" class="LineNr">101 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">else</span> <span class="Delimiter">{</span>
-<span id="L102" class="LineNr">102 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L103" class="LineNr">103 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Comment">// Writing Instruction Product(i)</span>
-<span id="L104" class="LineNr">104 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> write_memory<span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
-<span id="L105" class="LineNr">105 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L106" class="LineNr">106 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L107" class="LineNr">107 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L108" class="LineNr">108 </span>  <span class="Conceal">¦</span> <span class="Comment">// End Running One Instruction</span>
-<span id="L109" class="LineNr">109 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>fall_through_to_next_instruction<span class="Delimiter">)</span>
-<span id="L110" class="LineNr">110 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> ++current_step_index<span class="Delimiter">();</span>
-<span id="L111" class="LineNr">111 </span>  <span class="Delimiter">}</span>
-<span id="L112" class="LineNr">112 </span>  <span class="Normal">stop_running_current_routine</span>:<span class="Delimiter">;</span>
-<span id="L113" class="LineNr">113 </span><span class="Delimiter">}</span>
-<span id="L114" class="LineNr">114 </span>
-<span id="L115" class="LineNr">115 </span><span class="Delimiter">:(code)</span>
-<span id="L116" class="LineNr">116 </span><span class="Comment">//: hook replaced in a later layer</span>
-<span id="L117" class="LineNr">117 </span><span class="Normal">bool</span> <a href='073scheduler.cc.html#L28'>should_continue_running</a><span class="Delimiter">(</span><span class="Normal">const</span> routine* current_routine<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L118" class="LineNr">118 </span>  assert<span class="Delimiter">(</span>current_routine == Current_routine<span class="Delimiter">);</span>  <span class="Comment">// argument passed in just to make caller readable above</span>
-<span id="L119" class="LineNr">119 </span>  <span class="Identifier">return</span> !Current_routine<span class="Delimiter">-&gt;</span>completed<span class="Delimiter">();</span>
-<span id="L120" class="LineNr">120 </span><span class="Delimiter">}</span>
-<span id="L121" class="LineNr">121 </span>
-<span id="L122" class="LineNr">122 </span><span class="Normal">bool</span> should_copy_ingredients<span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L123" class="LineNr">123 </span>  <span class="Comment">// End should_copy_ingredients Special-cases</span>
-<span id="L124" class="LineNr">124 </span>  <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L125" class="LineNr">125 </span><span class="Delimiter">}</span>
-<span id="L126" class="LineNr">126 </span>
-<span id="L127" class="LineNr">127 </span><span class="Comment">//: Some helpers.</span>
-<span id="L128" class="LineNr">128 </span><span class="Comment">//: Important that they return references into the current routine.</span>
-<span id="L129" class="LineNr">129 </span>
-<span id="L130" class="LineNr">130 </span><span class="Comment">//: hook replaced in a later layer</span>
-<span id="L131" class="LineNr">131 </span><span class="Normal">int</span>&amp; <a href='026call.cc.html#L82'>current_step_index</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L132" class="LineNr">132 </span>  <span class="Identifier">return</span> Current_routine<span class="Delimiter">-&gt;</span>running_step_index<span class="Delimiter">;</span>
-<span id="L133" class="LineNr">133 </span><span class="Delimiter">}</span>
-<span id="L134" class="LineNr">134 </span>
-<span id="L135" class="LineNr">135 </span><span class="Comment">//: hook replaced in a later layer</span>
-<span id="L136" class="LineNr">136 </span><a href='010vm.cc.html#L14'>recipe_ordinal</a> <a href='026call.cc.html#L83'>currently_running_recipe</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L137" class="LineNr">137 </span>  <span class="Identifier">return</span> Current_routine<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">;</span>
-<span id="L138" class="LineNr">138 </span><span class="Delimiter">}</span>
-<span id="L139" class="LineNr">139 </span>
-<span id="L140" class="LineNr">140 </span><span class="Comment">//: hook replaced in a later layer</span>
-<span id="L141" class="LineNr">141 </span><span class="Normal">const</span> string&amp; <a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L142" class="LineNr">142 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">).</span>name<span class="Delimiter">;</span>
-<span id="L143" class="LineNr">143 </span><span class="Delimiter">}</span>
-<span id="L144" class="LineNr">144 </span>
-<span id="L145" class="LineNr">145 </span><span class="Comment">//: hook replaced in a later layer</span>
-<span id="L146" class="LineNr">146 </span><span class="Normal">const</span> recipe&amp; <a href='026call.cc.html#L84'>current_recipe</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L147" class="LineNr">147 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">);</span>
-<span id="L148" class="LineNr">148 </span><span class="Delimiter">}</span>
-<span id="L149" class="LineNr">149 </span>
-<span id="L150" class="LineNr">150 </span><span class="Comment">//: hook replaced in a later layer</span>
-<span id="L151" class="LineNr">151 </span><span class="Normal">const</span> instruction&amp; <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L152" class="LineNr">152 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">).</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>running_step_index<span class="Delimiter">);</span>
-<span id="L153" class="LineNr">153 </span><span class="Delimiter">}</span>
-<span id="L154" class="LineNr">154 </span>
-<span id="L155" class="LineNr">155 </span><span class="Comment">//: hook replaced in a later layer</span>
-<span id="L156" class="LineNr">156 </span><span class="Normal">bool</span> routine::completed<span class="Delimiter">()</span> <span class="Normal">const</span> <span class="Delimiter">{</span>
-<span id="L157" class="LineNr">157 </span>  <span class="Identifier">return</span> running_step_index &gt;= <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> running_recipe<span class="Delimiter">).</span>steps<span class="Delimiter">);</span>
-<span id="L158" class="LineNr">158 </span><span class="Delimiter">}</span>
-<span id="L159" class="LineNr">159 </span>
-<span id="L160" class="LineNr">160 </span><span class="Comment">//: hook replaced in a later layer</span>
-<span id="L161" class="LineNr">161 </span><span class="Normal">const</span> vector&lt;instruction&gt;&amp; routine::steps<span class="Delimiter">()</span> <span class="Normal">const</span> <span class="Delimiter">{</span>
-<span id="L162" class="LineNr">162 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> running_recipe<span class="Delimiter">).</span>steps<span class="Delimiter">;</span>
-<span id="L163" class="LineNr">163 </span><span class="Delimiter">}</span>
-<span id="L164" class="LineNr">164 </span>
-<span id="L165" class="LineNr">165 </span><span class="SalientComment">//:: Startup flow</span>
-<span id="L166" class="LineNr">166 </span>
-<span id="L167" class="LineNr">167 </span><span class="Comment">//: Step 1: load all .mu files with numeric prefixes (in order)</span>
-<span id="L168" class="LineNr">168 </span><span class="Delimiter">:(before &quot;End Load Recipes&quot;)</span>
-<span id="L169" class="LineNr">169 </span><span class="Comment">// Load Mu Prelude</span>
-<span id="L170" class="LineNr">170 </span><span class="CommentedCode">//? Save_trace = true;</span>
-<span id="L171" class="LineNr">171 </span><span class="CommentedCode">//? START_TRACING_UNTIL_END_OF_SCOPE;</span>
-<span id="L172" class="LineNr">172 </span>load_file_or_directory<span class="Delimiter">(</span><span class="Constant">&quot;core.mu&quot;</span><span class="Delimiter">);</span>
-<span id="L173" class="LineNr">173 </span><span class="CommentedCode">//? DUMP(&quot;&quot;);</span>
-<span id="L174" class="LineNr">174 </span><span class="CommentedCode">//? exit(0);</span>
-<span id="L175" class="LineNr">175 </span>
-<span id="L176" class="LineNr">176 </span><span class="Comment">//: Step 2: load any .mu files provided at the commandline</span>
-<span id="L177" class="LineNr">177 </span><span class="Delimiter">:(before &quot;End Commandline Parsing&quot;)</span>
-<span id="L178" class="LineNr">178 </span><span class="Comment">// Check For .mu Files</span>
-<span id="L179" class="LineNr">179 </span><span class="CommentedCode">//? START_TRACING_UNTIL_END_OF_SCOPE</span>
-<span id="L180" class="LineNr">180 </span><span class="CommentedCode">//? Dump_trace = true;</span>
-<span id="L181" class="LineNr">181 </span><span class="Normal">if</span> <span class="Delimiter">(</span>argc &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L182" class="LineNr">182 </span>  <span class="Comment">// skip argv[0]</span>
-<span id="L183" class="LineNr">183 </span>  ++argv<span class="Delimiter">;</span>
-<span id="L184" class="LineNr">184 </span>  --argc<span class="Delimiter">;</span>
-<span id="L185" class="LineNr">185 </span>  <span class="Normal">while</span> <span class="Delimiter">(</span>argc &gt; <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L186" class="LineNr">186 </span>  <span class="Conceal">¦</span> <span class="Comment">// ignore argv past '--'; that's commandline args for 'main'</span>
-<span id="L187" class="LineNr">187 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>string<span class="Delimiter">(</span>*argv<span class="Delimiter">)</span> == <span class="Constant">&quot;--&quot;</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L188" class="LineNr">188 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L77'>starts_with</a><span class="Delimiter">(</span>*argv<span class="Delimiter">,</span> <span class="Constant">&quot;--&quot;</span><span class="Delimiter">))</span>
-<span id="L189" class="LineNr">189 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> cerr &lt;&lt; <span class="Constant">&quot;treating &quot;</span> &lt;&lt; *argv &lt;&lt; <span class="Constant">&quot; as a file rather than an option</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
-<span id="L190" class="LineNr">190 </span>  <span class="Conceal">¦</span> load_file_or_directory<span class="Delimiter">(</span>*argv<span class="Delimiter">);</span>
-<span id="L191" class="LineNr">191 </span>  <span class="Conceal">¦</span> --argc<span class="Delimiter">;</span>
-<span id="L192" class="LineNr">192 </span>  <span class="Conceal">¦</span> ++argv<span class="Delimiter">;</span>
-<span id="L193" class="LineNr">193 </span>  <span class="Delimiter">}</span>
-<span id="L194" class="LineNr">194 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Run_tests<span class="Delimiter">)</span> Recipe<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">));</span>
-<span id="L195" class="LineNr">195 </span><span class="Delimiter">}</span>
-<span id="L196" class="LineNr">196 </span><a href='012transform.cc.html#L46'>transform_all</a><span class="Delimiter">();</span>
-<span id="L197" class="LineNr">197 </span><span class="CommentedCode">//? cerr &lt;&lt; to_original_string(get(Type_ordinal, &quot;editor&quot;)) &lt;&lt; '\n';</span>
-<span id="L198" class="LineNr">198 </span><span class="CommentedCode">//? cerr &lt;&lt; to_original_string(get(Recipe, get(Recipe_ordinal, &quot;event-loop&quot;))) &lt;&lt; '\n';</span>
-<span id="L199" class="LineNr">199 </span><span class="CommentedCode">//? DUMP(&quot;&quot;);</span>
-<span id="L200" class="LineNr">200 </span><span class="CommentedCode">//? exit(0);</span>
-<span id="L201" class="LineNr">201 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L192'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
-<span id="L202" class="LineNr">202 </span>save_snapshots<span class="Delimiter">();</span>
-<span id="L203" class="LineNr">203 </span>
-<span id="L204" class="LineNr">204 </span><span class="Comment">//: Step 3: if we aren't running tests, locate a recipe called 'main' and</span>
-<span id="L205" class="LineNr">205 </span><span class="Comment">//: start running it.</span>
-<span id="L206" class="LineNr">206 </span><span class="Delimiter">:(before &quot;End Main&quot;)</span>
-<span id="L207" class="LineNr">207 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!Run_tests &amp;&amp; contains_key<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">)</span> &amp;&amp; contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L208" class="LineNr">208 </span>  <span class="Comment">// Running Main</span>
-<span id="L209" class="LineNr">209 </span>  <a href='000organization.cc.html#L134'>reset</a><span class="Delimiter">();</span>
-<span id="L210" class="LineNr">210 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Start_tracing<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L211" class="LineNr">211 </span>  <span class="Conceal">¦</span> Trace_stream = <span class="Normal">new</span> trace_stream<span class="Delimiter">;</span>
-<span id="L212" class="LineNr">212 </span>  <span class="Conceal">¦</span> Save_trace = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L213" class="LineNr">213 </span>  <span class="Delimiter">}</span>
-<span id="L214" class="LineNr">214 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;=== Starting to run&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L215" class="LineNr">215 </span>  assert<span class="Delimiter">(</span>Num_calls_to_transform_all == <span class="Constant">1</span><span class="Delimiter">);</span>
-<span id="L216" class="LineNr">216 </span>  <a href='073scheduler.cc.html#L122'>run_main</a><span class="Delimiter">(</span>argc<span class="Delimiter">,</span> argv<span class="Delimiter">);</span>
-<span id="L217" class="LineNr">217 </span><span class="Delimiter">}</span>
-<span id="L218" class="LineNr">218 </span><span class="Delimiter">:(code)</span>
-<span id="L219" class="LineNr">219 </span><span class="Normal">void</span> <a href='073scheduler.cc.html#L122'>run_main</a><span class="Delimiter">(</span><span class="Normal">int</span> argc<span class="Delimiter">,</span> <span class="Normal">char</span>* argv[]<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L220" class="LineNr">220 </span>  <a href='010vm.cc.html#L14'>recipe_ordinal</a> r = get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">);</span>
-<span id="L221" class="LineNr">221 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">)</span> run<span class="Delimiter">(</span>r<span class="Delimiter">);</span>
-<span id="L222" class="LineNr">222 </span><span class="Delimiter">}</span>
-<span id="L223" class="LineNr">223 </span>
-<span id="L224" class="LineNr">224 </span><span class="Comment">//: By default we don't maintain the trace while running main because its</span>
-<span id="L225" class="LineNr">225 </span><span class="Comment">//: overheads can grow rapidly. However, it's useful when debugging.</span>
-<span id="L226" class="LineNr">226 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
-<span id="L227" class="LineNr">227 </span><span class="Normal">bool</span> Start_tracing = <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L228" class="LineNr">228 </span><span class="Delimiter">:(before &quot;End Commandline Options(*arg)&quot;)</span>
-<span id="L229" class="LineNr">229 </span><span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L73'>is_equal</a><span class="Delimiter">(</span>*arg<span class="Delimiter">,</span> <span class="Constant">&quot;--trace&quot;</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L230" class="LineNr">230 </span>  Start_tracing = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L231" class="LineNr">231 </span><span class="Delimiter">}</span>
-<span id="L232" class="LineNr">232 </span>
-<span id="L233" class="LineNr">233 </span><span class="Delimiter">:(code)</span>
-<span id="L234" class="LineNr">234 </span><span class="Normal">void</span> cleanup_main<span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L235" class="LineNr">235 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Save_trace &amp;&amp; Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L236" class="LineNr">236 </span>  <span class="Conceal">¦</span> cerr &lt;&lt; <span class="Constant">&quot;writing <a href='003trace.cc.html#L161'>trace</a> to 'last_run'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
-<span id="L237" class="LineNr">237 </span>  <span class="Conceal">¦</span> ofstream fout<span class="Delimiter">(</span><span class="Constant">&quot;last_run&quot;</span><span class="Delimiter">);</span>
-<span id="L238" class="LineNr">238 </span>  <span class="Conceal">¦</span> fout &lt;&lt; Trace_stream<span class="Delimiter">-&gt;</span><a href='003trace.cc.html#L143'>readable_contents</a><span class="Delimiter">(</span><span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>
-<span id="L239" class="LineNr">239 </span>  <span class="Conceal">¦</span> fout<span class="Delimiter">.</span>close<span class="Delimiter">();</span>
-<span id="L240" class="LineNr">240 </span>  <span class="Delimiter">}</span>
-<span id="L241" class="LineNr">241 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Normal">delete</span> Trace_stream<span class="Delimiter">,</span> Trace_stream = <span class="Constant">NULL</span><span class="Delimiter">;</span>
-<span id="L242" class="LineNr">242 </span><span class="Delimiter">}</span>
-<span id="L243" class="LineNr">243 </span><span class="Delimiter">:(before &quot;End One-time Setup&quot;)</span>
-<span id="L244" class="LineNr">244 </span>atexit<span class="Delimiter">(</span>cleanup_main<span class="Delimiter">);</span>
-<span id="L245" class="LineNr">245 </span>
-<span id="L246" class="LineNr">246 </span><span class="Delimiter">:(code)</span>
-<span id="L247" class="LineNr">247 </span><span class="Normal">void</span> load_file_or_directory<span class="Delimiter">(</span>string filename<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L248" class="LineNr">248 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_directory<span class="Delimiter">(</span>filename<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L249" class="LineNr">249 </span>  <span class="Conceal">¦</span> load_all<span class="Delimiter">(</span>filename<span class="Delimiter">);</span>
-<span id="L250" class="LineNr">250 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L251" class="LineNr">251 </span>  <span class="Delimiter">}</span>
-<span id="L252" class="LineNr">252 </span>  ifstream fin<span class="Delimiter">(</span>filename<span class="Delimiter">.</span>c_str<span class="Delimiter">());</span>
-<span id="L253" class="LineNr">253 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!fin<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L254" class="LineNr">254 </span>  <span class="Conceal">¦</span> cerr &lt;&lt; <span class="Constant">&quot;no such file '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>  <span class="Comment">// don't raise, just warn. just in case it's just a name for a scenario to run.</span>
-<span id="L255" class="LineNr">255 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L256" class="LineNr">256 </span>  <span class="Delimiter">}</span>
-<span id="L257" class="LineNr">257 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9990</span><span class="Delimiter">,</span> <span class="Constant">&quot;load&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;=== &quot;</span> &lt;&lt; filename &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L258" class="LineNr">258 </span>  load<span class="Delimiter">(</span>fin<span class="Delimiter">);</span>
-<span id="L259" class="LineNr">259 </span>  fin<span class="Delimiter">.</span>close<span class="Delimiter">();</span>
-<span id="L260" class="LineNr">260 </span><span class="Delimiter">}</span>
-<span id="L261" class="LineNr">261 </span>
-<span id="L262" class="LineNr">262 </span><span class="Normal">bool</span> is_directory<span class="Delimiter">(</span>string path<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L263" class="LineNr">263 </span>  <span class="Normal">struct</span> stat info<span class="Delimiter">;</span>
-<span id="L264" class="LineNr">264 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>stat<span class="Delimiter">(</span>path<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> &amp;info<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>  <span class="Comment">// error</span>
-<span id="L265" class="LineNr">265 </span>  <span class="Identifier">return</span> info<span class="Delimiter">.</span>st_mode &amp; S_IFDIR<span class="Delimiter">;</span>
-<span id="L266" class="LineNr">266 </span><span class="Delimiter">}</span>
-<span id="L267" class="LineNr">267 </span>
-<span id="L268" class="LineNr">268 </span><span class="Normal">void</span> load_all<span class="Delimiter">(</span>string dir<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L269" class="LineNr">269 </span>  dirent** files<span class="Delimiter">;</span>
-<span id="L270" class="LineNr">270 </span>  <span class="Normal">int</span> num_files = scandir<span class="Delimiter">(</span>dir<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> &amp;files<span class="Delimiter">,</span> <span class="Constant">NULL</span><span class="Delimiter">,</span> alphasort<span class="Delimiter">);</span>
-<span id="L271" class="LineNr">271 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; num_files<span class="Delimiter">;</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L272" class="LineNr">272 </span>  <span class="Conceal">¦</span> string curr_file = files[i]<span class="Delimiter">-&gt;</span>d_name<span class="Delimiter">;</span>
-<span id="L273" class="LineNr">273 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>isdigit<span class="Delimiter">(</span>curr_file<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span>
-<span id="L274" class="LineNr">274 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> load_file_or_directory<span class="Delimiter">(</span>dir+<span class="Constant">'/'</span>+curr_file<span class="Delimiter">);</span>
-<span id="L275" class="LineNr">275 </span>  <span class="Conceal">¦</span> free<span class="Delimiter">(</span>files[i]<span class="Delimiter">);</span>
-<span id="L276" class="LineNr">276 </span>  <span class="Conceal">¦</span> files[i] = <span class="Constant">NULL</span><span class="Delimiter">;</span>
-<span id="L277" class="LineNr">277 </span>  <span class="Delimiter">}</span>
-<span id="L278" class="LineNr">278 </span>  free<span class="Delimiter">(</span>files<span class="Delimiter">);</span>
-<span id="L279" class="LineNr">279 </span><span class="Delimiter">}</span>
-<span id="L280" class="LineNr">280 </span><span class="Delimiter">:(before &quot;End Includes&quot;)</span>
-<span id="L281" class="LineNr">281 </span><span class="PreProc">#include </span><span class="Constant">&lt;dirent.h&gt;</span>
-<span id="L282" class="LineNr">282 </span><span class="PreProc">#include </span><span class="Constant">&lt;sys/stat.h&gt;</span>
-<span id="L283" class="LineNr">283 </span>
-<span id="L284" class="LineNr">284 </span><span class="SalientComment">//:: Reading from memory, writing to memory.</span>
-<span id="L285" class="LineNr">285 </span>
-<span id="L286" class="LineNr">286 </span><span class="Delimiter">:(code)</span>
-<span id="L287" class="LineNr">287 </span>vector&lt;<span class="Normal">double</span>&gt; read_memory<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L288" class="LineNr">288 </span>  <span class="Comment">// Begin Preprocess read_memory(x)</span>
-<span id="L289" class="LineNr">289 </span>  vector&lt;<span class="Normal">double</span>&gt; result<span class="Delimiter">;</span>
-<span id="L290" class="LineNr">290 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L291" class="LineNr">291 </span>  <span class="Conceal">¦</span> result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>x<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
-<span id="L292" class="LineNr">292 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
-<span id="L293" class="LineNr">293 </span>  <span class="Delimiter">}</span>
-<span id="L294" class="LineNr">294 </span>  <span class="Comment">// End Preprocess read_memory(x)</span>
-<span id="L295" class="LineNr">295 </span>  <span class="Normal">int</span> size = size_of<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
-<span id="L296" class="LineNr">296 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> offset = <span class="Constant">0</span><span class="Delimiter">;</span>  offset &lt; size<span class="Delimiter">;</span>  ++offset<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L297" class="LineNr">297 </span>  <span class="Conceal">¦</span> <span class="Normal">double</span> val = <a href='001help.cc.html#L228'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> x<span class="Delimiter">.</span>value+offset<span class="Delimiter">);</span>
-<span id="L298" class="LineNr">298 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;location &quot;</span> &lt;&lt; x<span class="Delimiter">.</span>value+offset &lt;&lt; <span class="Constant">&quot; is &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>val<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L299" class="LineNr">299 </span>  <span class="Conceal">¦</span> result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>val<span class="Delimiter">);</span>
-<span id="L300" class="LineNr">300 </span>  <span class="Delimiter">}</span>
-<span id="L301" class="LineNr">301 </span>  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
-<span id="L302" class="LineNr">302 </span><span class="Delimiter">}</span>
-<span id="L303" class="LineNr">303 </span>
-<span id="L304" class="LineNr">304 </span><span class="Normal">void</span> write_memory<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">,</span> <span class="Normal">const</span> vector&lt;<span class="Normal">double</span>&gt;&amp; data<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L305" class="LineNr">305 </span>  assert<span class="Delimiter">(</span>Current_routine<span class="Delimiter">);</span>  <span class="Comment">// run-time only</span>
-<span id="L306" class="LineNr">306 </span>  <span class="Comment">// Begin Preprocess write_memory(x, data)</span>
-<span id="L307" class="LineNr">307 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L308" class="LineNr">308 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;can't write to '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L162'>to_string</a><span class="Delimiter">(</span>x<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'; no type</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-<span id="L309" class="LineNr">309 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L310" class="LineNr">310 </span>  <span class="Delimiter">}</span>
-<span id="L311" class="LineNr">311 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L312" class="LineNr">312 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L313" class="LineNr">313 </span>  <span class="Comment">// End Preprocess write_memory(x, data)</span>
-<span id="L314" class="LineNr">314 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>value == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L315" class="LineNr">315 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;can't write to location 0 in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-<span id="L316" class="LineNr">316 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L317" class="LineNr">317 </span>  <span class="Delimiter">}</span>
-<span id="L318" class="LineNr">318 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>size_mismatch<span class="Delimiter">(</span>x<span class="Delimiter">,</span> data<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L319" class="LineNr">319 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;size mismatch in storing to '&quot;</span> &lt;&lt; x<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' (&quot;</span> &lt;&lt; size_of<span class="Delimiter">(</span>x<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; vs &quot;</span> &lt;&lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>data<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;) at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L320" class="LineNr">320 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L321" class="LineNr">321 </span>  <span class="Delimiter">}</span>
-<span id="L322" class="LineNr">322 </span>  <span class="Comment">// End write_memory(x) Special-cases</span>
-<span id="L323" class="LineNr">323 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> offset = <span class="Constant">0</span><span class="Delimiter">;</span>  offset &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>data<span class="Delimiter">);</span>  ++offset<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L324" class="LineNr">324 </span>  <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>x<span class="Delimiter">.</span>value+offset &gt; <span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L325" class="LineNr">325 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>data<span class="Delimiter">.</span>at<span class="Delimiter">(</span>offset<span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; x<span class="Delimiter">.</span>value+offset &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L326" class="LineNr">326 </span>  <span class="Conceal">¦</span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> x<span class="Delimiter">.</span>value+offset<span class="Delimiter">,</span> data<span class="Delimiter">.</span>at<span class="Delimiter">(</span>offset<span class="Delimiter">));</span>
-<span id="L327" class="LineNr">327 </span>  <span class="Delimiter">}</span>
-<span id="L328" class="LineNr">328 </span><span class="Delimiter">}</span>
-<span id="L329" class="LineNr">329 </span>
-<span id="L330" class="LineNr">330 </span><span class="Delimiter">:(code)</span>
-<span id="L331" class="LineNr">331 </span><span class="Normal">int</span> size_of<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L332" class="LineNr">332 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
-<span id="L333" class="LineNr">333 </span>  <span class="Comment">// End size_of(reagent r) Special-cases</span>
-<span id="L334" class="LineNr">334 </span>  <span class="Identifier">return</span> size_of<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
-<span id="L335" class="LineNr">335 </span><span class="Delimiter">}</span>
-<span id="L336" class="LineNr">336 </span><span class="Normal">int</span> size_of<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L337" class="LineNr">337 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
-<span id="L338" class="LineNr">338 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L339" class="LineNr">339 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>value == -<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>  <span class="Comment">// error value, but we'll raise it elsewhere</span>
-<span id="L340" class="LineNr">340 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>value == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
-<span id="L341" class="LineNr">341 </span>  <span class="Conceal">¦</span> <span class="Comment">// End size_of(type) Atom Special-cases</span>
-<span id="L342" class="LineNr">342 </span>  <span class="Delimiter">}</span>
-<span id="L343" class="LineNr">343 </span>  <span class="Normal">else</span> <span class="Delimiter">{</span>
-<span id="L344" class="LineNr">344 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L345" class="LineNr">345 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;invalid type &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L162'>to_string</a><span class="Delimiter">(</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L346" class="LineNr">346 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
-<span id="L347" class="LineNr">347 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L348" class="LineNr">348 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;address&quot;</span><span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
-<span id="L349" class="LineNr">349 </span>  <span class="Conceal">¦</span> <span class="Comment">// End size_of(type) Non-atom Special-cases</span>
-<span id="L350" class="LineNr">350 </span>  <span class="Delimiter">}</span>
-<span id="L351" class="LineNr">351 </span>  <span class="Comment">// End size_of(type) Special-cases</span>
-<span id="L352" class="LineNr">352 </span>  <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
-<span id="L353" class="LineNr">353 </span><span class="Delimiter">}</span>
-<span id="L354" class="LineNr">354 </span>
-<span id="L355" class="LineNr">355 </span><span class="Normal">bool</span> size_mismatch<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">,</span> <span class="Normal">const</span> vector&lt;<span class="Normal">double</span>&gt;&amp; data<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L356" class="LineNr">356 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L357" class="LineNr">357 </span>  <span class="Comment">// End size_mismatch(x) Special-cases</span>
-<span id="L358" class="LineNr">358 </span><span class="CommentedCode">//?   if (size_of(x) != SIZE(data)) cerr &lt;&lt; size_of(x) &lt;&lt; &quot; vs &quot; &lt;&lt; SIZE(data) &lt;&lt; '\n';</span>
-<span id="L359" class="LineNr">359 </span>  <span class="Identifier">return</span> size_of<span class="Delimiter">(</span>x<span class="Delimiter">)</span> != <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>data<span class="Delimiter">);</span>
-<span id="L360" class="LineNr">360 </span><span class="Delimiter">}</span>
-<span id="L361" class="LineNr">361 </span>
-<span id="L362" class="LineNr">362 </span><span class="Normal">bool</span> is_literal<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L363" class="LineNr">363 </span>  <span class="Identifier">return</span> is_literal<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
-<span id="L364" class="LineNr">364 </span><span class="Delimiter">}</span>
-<span id="L365" class="LineNr">365 </span><span class="Normal">bool</span> is_literal<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L366" class="LineNr">366 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L367" class="LineNr">367 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L368" class="LineNr">368 </span>  <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>value == <span class="Constant">0</span><span class="Delimiter">;</span>
-<span id="L369" class="LineNr">369 </span><span class="Delimiter">}</span>
-<span id="L370" class="LineNr">370 </span>
-<span id="L371" class="LineNr">371 </span><span class="Normal">bool</span> scalar<span class="Delimiter">(</span><span class="Normal">const</span> vector&lt;<span class="Normal">int</span>&gt;&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L372" class="LineNr">372 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>x<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">;</span>
-<span id="L373" class="LineNr">373 </span><span class="Delimiter">}</span>
-<span id="L374" class="LineNr">374 </span><span class="Normal">bool</span> scalar<span class="Delimiter">(</span><span class="Normal">const</span> vector&lt;<span class="Normal">double</span>&gt;&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L375" class="LineNr">375 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>x<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">;</span>
-<span id="L376" class="LineNr">376 </span><span class="Delimiter">}</span>
-<span id="L377" class="LineNr">377 </span>
-<span id="L378" class="LineNr">378 </span><span class="Comment">// helper for tests</span>
-<span id="L379" class="LineNr">379 </span><span class="Normal">void</span> run<span class="Delimiter">(</span><span class="Normal">const</span> string&amp; form<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L380" class="LineNr">380 </span>  vector&lt;recipe_ordinal&gt; tmp = load<span class="Delimiter">(</span>form<span class="Delimiter">);</span>
-<span id="L381" class="LineNr">381 </span>  <a href='012transform.cc.html#L46'>transform_all</a><span class="Delimiter">();</span>
-<span id="L382" class="LineNr">382 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>tmp<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L383" class="LineNr">383 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L192'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L384" class="LineNr">384 </span>  <span class="Comment">// if a test defines main, it probably wants to start there regardless of</span>
-<span id="L385" class="LineNr">385 </span>  <span class="Comment">// definition order</span>
-<span id="L386" class="LineNr">386 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">)))</span>
-<span id="L387" class="LineNr">387 </span>  <span class="Conceal">¦</span> run<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">));</span>
-<span id="L388" class="LineNr">388 </span>  <span class="Normal">else</span>
-<span id="L389" class="LineNr">389 </span>  <span class="Conceal">¦</span> run<span class="Delimiter">(</span>tmp<span class="Delimiter">.</span>front<span class="Delimiter">());</span>
-<span id="L390" class="LineNr">390 </span><span class="Delimiter">}</span>
-<span id="L391" class="LineNr">391 </span>
-<span id="L392" class="LineNr">392 </span><span class="Delimiter">:(scenario run_label)</span>
-<span id="L393" class="LineNr">393 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L394" class="LineNr">394 </span>  +foo
-<span id="L395" class="LineNr">395 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
-<span id="L396" class="LineNr">396 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">1</span>:num
-<span id="L397" class="LineNr">397 </span>]
-<span id="L398" class="LineNr">398 </span><span class="traceContains">+run: {1: &quot;number&quot;} &lt;- copy {23: &quot;literal&quot;}</span>
-<span id="L399" class="LineNr">399 </span><span class="traceContains">+run: {2: &quot;number&quot;} &lt;- copy {1: &quot;number&quot;}</span>
-<span id="L400" class="LineNr">400 </span><span class="traceAbsent">-run: +foo</span>
-<span id="L401" class="LineNr">401 </span>
-<span id="L402" class="LineNr">402 </span><span class="Delimiter">:(scenario run_dummy)</span>
-<span id="L403" class="LineNr">403 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L404" class="LineNr">404 </span>  _<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
-<span id="L405" class="LineNr">405 </span>]
-<span id="L406" class="LineNr">406 </span><span class="traceContains">+run: _ &lt;- copy {0: &quot;literal&quot;}</span>
-<span id="L407" class="LineNr">407 </span>
-<span id="L408" class="LineNr">408 </span><span class="Delimiter">:(scenario write_to_0_disallowed)</span>
-<span id="L409" class="LineNr">409 </span><span class="Special">% Hide_errors = true;</span>
-<span id="L410" class="LineNr">410 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L411" class="LineNr">411 </span>  <span class="Constant">0</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
-<span id="L412" class="LineNr">412 </span>]
-<span id="L413" class="LineNr">413 </span><span class="traceAbsent">-mem: storing 34 in location 0</span>
-<span id="L414" class="LineNr">414 </span>
-<span id="L415" class="LineNr">415 </span><span class="Comment">//: Mu is robust to various combinations of commas and spaces. You just have</span>
-<span id="L416" class="LineNr">416 </span><span class="Comment">//: to put spaces around the '&lt;-'.</span>
-<span id="L417" class="LineNr">417 </span>
-<span id="L418" class="LineNr">418 </span><span class="Delimiter">:(scenario comma_without_space)</span>
-<span id="L419" class="LineNr">419 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L420" class="LineNr">420 </span>  <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">2</span><span class="Delimiter">,</span><span class="Constant">2</span>
-<span id="L421" class="LineNr">421 </span>]
-<span id="L422" class="LineNr">422 </span><span class="traceContains">+mem: storing 2 in location 1</span>
-<span id="L423" class="LineNr">423 </span>
-<span id="L424" class="LineNr">424 </span><span class="Delimiter">:(scenario space_without_comma)</span>
-<span id="L425" class="LineNr">425 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L426" class="LineNr">426 </span>  <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">2</span> <span class="Constant">2</span>
-<span id="L427" class="LineNr">427 </span>]
-<span id="L428" class="LineNr">428 </span><span class="traceContains">+mem: storing 2 in location 1</span>
-<span id="L429" class="LineNr">429 </span>
-<span id="L430" class="LineNr">430 </span><span class="Delimiter">:(scenario comma_before_space)</span>
-<span id="L431" class="LineNr">431 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L432" class="LineNr">432 </span>  <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">2</span>
-<span id="L433" class="LineNr">433 </span>]
-<span id="L434" class="LineNr">434 </span><span class="traceContains">+mem: storing 2 in location 1</span>
-<span id="L435" class="LineNr">435 </span>
-<span id="L436" class="LineNr">436 </span><span class="Delimiter">:(scenario comma_after_space)</span>
-<span id="L437" class="LineNr">437 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L438" class="LineNr">438 </span>  <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">2</span> <span class="Delimiter">,</span><span class="Constant">2</span>
-<span id="L439" class="LineNr">439 </span>]
-<span id="L440" class="LineNr">440 </span><span class="traceContains">+mem: storing 2 in location 1</span>
-<span id="L441" class="LineNr">441 </span>
-<span id="L442" class="LineNr">442 </span><span class="SalientComment">//:: Counters for trying to understand where Mu programs are spending their</span>
-<span id="L443" class="LineNr">443 </span><span class="SalientComment">//:: time.</span>
-<span id="L444" class="LineNr">444 </span>
-<span id="L445" class="LineNr">445 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
-<span id="L446" class="LineNr">446 </span><span class="Normal">bool</span> Run_profiler = <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L447" class="LineNr">447 </span><span class="Comment">// We'll key profile information by recipe_ordinal rather than name because</span>
-<span id="L448" class="LineNr">448 </span><span class="Comment">// it's more efficient, and because later layers will show more than just the</span>
-<span id="L449" class="LineNr">449 </span><span class="Comment">// name of a recipe.</span>
-<span id="L450" class="LineNr">450 </span><span class="Comment">//</span>
-<span id="L451" class="LineNr">451 </span><span class="Comment">// One drawback: if you're clearing recipes your profile will be inaccurate.</span>
-<span id="L452" class="LineNr">452 </span><span class="Comment">// So far that happens in tests, and in 'run-sandboxed' in a later layer.</span>
-<span id="L453" class="LineNr">453 </span>map&lt;recipe_ordinal<span class="Delimiter">,</span> <span class="Normal">int</span>&gt; Instructions_running<span class="Delimiter">;</span>
-<span id="L454" class="LineNr">454 </span><span class="Delimiter">:(before &quot;End Commandline Options(*arg)&quot;)</span>
-<span id="L455" class="LineNr">455 </span><span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L73'>is_equal</a><span class="Delimiter">(</span>*arg<span class="Delimiter">,</span> <span class="Constant">&quot;--profile&quot;</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L456" class="LineNr">456 </span>  Run_profiler = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L457" class="LineNr">457 </span><span class="Delimiter">}</span>
-<span id="L458" class="LineNr">458 </span><span class="Delimiter">:(after &quot;Running One Instruction&quot;)</span>
-<span id="L459" class="LineNr">459 </span><span class="Normal">if</span> <span class="Delimiter">(</span>Run_profiler<span class="Delimiter">)</span> Instructions_running[currently_running_recipe<span class="Delimiter">()</span>]++<span class="Delimiter">;</span>
-<span id="L460" class="LineNr">460 </span><span class="Delimiter">:(before &quot;End One-time Setup&quot;)</span>
-<span id="L461" class="LineNr">461 </span>atexit<span class="Delimiter">(</span>dump_profile<span class="Delimiter">);</span>
-<span id="L462" class="LineNr">462 </span><span class="Delimiter">:(code)</span>
-<span id="L463" class="LineNr">463 </span><span class="Normal">void</span> dump_profile<span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L464" class="LineNr">464 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!Run_profiler<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L465" class="LineNr">465 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Run_tests<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L466" class="LineNr">466 </span>  <span class="Conceal">¦</span> cerr &lt;&lt; <span class="Constant">&quot;It's not a good idea to profile a run with tests, since tests can create conflicting recipes and mislead you. To try it anyway, comment out this check in the code.</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
-<span id="L467" class="LineNr">467 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L468" class="LineNr">468 </span>  <span class="Delimiter">}</span>
-<span id="L469" class="LineNr">469 </span>  ofstream fout<span class="Delimiter">;</span>
-<span id="L470" class="LineNr">470 </span>  fout<span class="Delimiter">.</span>open<span class="Delimiter">(</span><span class="Constant">&quot;profile.instructions&quot;</span><span class="Delimiter">);</span>
-<span id="L471" class="LineNr">471 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>fout<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L472" class="LineNr">472 </span>  <span class="Conceal">¦</span> <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;recipe_ordinal<span class="Delimiter">,</span> <span class="Normal">int</span>&gt;::iterator p = Instructions_running<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != Instructions_running<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L473" class="LineNr">473 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> fout &lt;&lt; std::setw<span class="Delimiter">(</span><span class="Constant">9</span><span class="Delimiter">)</span> &lt;&lt; p<span class="Delimiter">-&gt;</span>second &lt;&lt; <span class="Constant">' '</span> &lt;&lt; header_label<span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
-<span id="L474" class="LineNr">474 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L475" class="LineNr">475 </span>  <span class="Delimiter">}</span>
-<span id="L476" class="LineNr">476 </span>  fout<span class="Delimiter">.</span>close<span class="Delimiter">();</span>
-<span id="L477" class="LineNr">477 </span>  <span class="Comment">// End dump_profile</span>
-<span id="L478" class="LineNr">478 </span><span class="Delimiter">}</span>
-<span id="L479" class="LineNr">479 </span>
-<span id="L480" class="LineNr">480 </span><span class="Comment">// overridden in a later layer</span>
-<span id="L481" class="LineNr">481 </span>string header_label<span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L482" class="LineNr">482 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">;</span>
-<span id="L483" class="LineNr">483 </span><span class="Delimiter">}</span>
+<span id="L67" class="LineNr"> 67 </span><span class="CommentedCode">//?     if (Foo) cerr &lt;&lt; &quot;run: &quot; &lt;&lt; to_string(current_instruction()) &lt;&lt; '\n';</span>
+<span id="L68" class="LineNr"> 68 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L228'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">)</span> != <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L69" class="LineNr"> 69 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;something wrote to location 0; this should never happen</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L70" class="LineNr"> 70 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L71" class="LineNr"> 71 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L72" class="LineNr"> 72 </span>  <span class="Conceal">¦</span> <span class="Comment">// read all ingredients from memory, each potentially spanning multiple locations</span>
+<span id="L73" class="LineNr"> 73 </span>  <span class="Conceal">¦</span> vector&lt;vector&lt;<span class="Normal">double</span>&gt; &gt; ingredients<span class="Delimiter">;</span>
+<span id="L74" class="LineNr"> 74 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>should_copy_ingredients<span class="Delimiter">())</span> <span class="Delimiter">{</span>
+<span id="L75" class="LineNr"> 75 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span>
+<span id="L76" class="LineNr"> 76 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)));</span>
+<span id="L77" class="LineNr"> 77 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L78" class="LineNr"> 78 </span>  <span class="Conceal">¦</span> <span class="Comment">// instructions below will write to 'products'</span>
+<span id="L79" class="LineNr"> 79 </span>  <span class="Conceal">¦</span> vector&lt;vector&lt;<span class="Normal">double</span>&gt; &gt; products<span class="Delimiter">;</span>
+<span id="L80" class="LineNr"> 80 </span>  <span class="Conceal">¦</span> <span class="Comment">//: This will be a large switch that later layers will often insert cases</span>
+<span id="L81" class="LineNr"> 81 </span>  <span class="Conceal">¦</span> <span class="Comment">//: into. Never call 'continue' within it. Instead, we'll explicitly</span>
+<span id="L82" class="LineNr"> 82 </span>  <span class="Conceal">¦</span> <span class="Comment">//: control which of the following stages after the switch we run for each</span>
+<span id="L83" class="LineNr"> 83 </span>  <span class="Conceal">¦</span> <span class="Comment">//: instruction.</span>
+<span id="L84" class="LineNr"> 84 </span>  <span class="Conceal">¦</span> <span class="Normal">bool</span> write_products = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L85" class="LineNr"> 85 </span>  <span class="Conceal">¦</span> <span class="Normal">bool</span> fall_through_to_next_instruction = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L86" class="LineNr"> 86 </span>  <span class="Conceal">¦</span> <span class="Normal">switch</span> <span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>operation<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L87" class="LineNr"> 87 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Comment">// Primitive Recipe Implementations</span>
+<span id="L88" class="LineNr"> 88 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">case</span> <a href='010vm.cc.html#L189'>COPY</a>: <span class="Delimiter">{</span>
+<span id="L89" class="LineNr"> 89 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> copy<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> ingredients<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">(),</span> inserter<span class="Delimiter">(</span>products<span class="Delimiter">,</span> products<span class="Delimiter">.</span>begin<span class="Delimiter">()));</span>
+<span id="L90" class="LineNr"> 90 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L91" class="LineNr"> 91 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L92" class="LineNr"> 92 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Comment">// End Primitive Recipe Implementations</span>
+<span id="L93" class="LineNr"> 93 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">default</span>: <span class="Delimiter">{</span>
+<span id="L94" class="LineNr"> 94 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> cout &lt;&lt; <span class="Constant">&quot;not a primitive op: &quot;</span> &lt;&lt; <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>operation &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
+<span id="L95" class="LineNr"> 95 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L96" class="LineNr"> 96 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L97" class="LineNr"> 97 </span>  <span class="Conceal">¦</span> <span class="Comment">//: used by a later layer</span>
+<span id="L98" class="LineNr"> 98 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>write_products<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L99" class="LineNr"> 99 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>products<span class="Delimiter">)</span> &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L100" class="LineNr">100 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>products<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; vs &quot;</span> &lt;&lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;: failed to write to all products in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L101" class="LineNr">101 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L102" class="LineNr">102 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">else</span> <span class="Delimiter">{</span>
+<span id="L103" class="LineNr">103 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L104" class="LineNr">104 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Comment">// Writing Instruction Product(i)</span>
+<span id="L105" class="LineNr">105 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> write_memory<span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
+<span id="L106" class="LineNr">106 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L107" class="LineNr">107 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L108" class="LineNr">108 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L109" class="LineNr">109 </span>  <span class="Conceal">¦</span> <span class="Comment">// End Running One Instruction</span>
+<span id="L110" class="LineNr">110 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>fall_through_to_next_instruction<span class="Delimiter">)</span>
+<span id="L111" class="LineNr">111 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> ++current_step_index<span class="Delimiter">();</span>
+<span id="L112" class="LineNr">112 </span>  <span class="Delimiter">}</span>
+<span id="L113" class="LineNr">113 </span>  <span class="Normal">stop_running_current_routine</span>:<span class="Delimiter">;</span>
+<span id="L114" class="LineNr">114 </span><span class="Delimiter">}</span>
+<span id="L115" class="LineNr">115 </span>
+<span id="L116" class="LineNr">116 </span><span class="Delimiter">:(code)</span>
+<span id="L117" class="LineNr">117 </span><span class="Comment">//: hook replaced in a later layer</span>
+<span id="L118" class="LineNr">118 </span><span class="Normal">bool</span> <a href='073scheduler.cc.html#L28'>should_continue_running</a><span class="Delimiter">(</span><span class="Normal">const</span> routine* current_routine<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L119" class="LineNr">119 </span>  assert<span class="Delimiter">(</span>current_routine == Current_routine<span class="Delimiter">);</span>  <span class="Comment">// argument passed in just to make caller readable above</span>
+<span id="L120" class="LineNr">120 </span>  <span class="Identifier">return</span> !Current_routine<span class="Delimiter">-&gt;</span>completed<span class="Delimiter">();</span>
+<span id="L121" class="LineNr">121 </span><span class="Delimiter">}</span>
+<span id="L122" class="LineNr">122 </span>
+<span id="L123" class="LineNr">123 </span><span class="Normal">bool</span> should_copy_ingredients<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L124" class="LineNr">124 </span>  <span class="Comment">// End should_copy_ingredients Special-cases</span>
+<span id="L125" class="LineNr">125 </span>  <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L126" class="LineNr">126 </span><span class="Delimiter">}</span>
+<span id="L127" class="LineNr">127 </span>
+<span id="L128" class="LineNr">128 </span><span class="Comment">//: Some helpers.</span>
+<span id="L129" class="LineNr">129 </span><span class="Comment">//: Important that they return references into the current routine.</span>
+<span id="L130" class="LineNr">130 </span>
+<span id="L131" class="LineNr">131 </span><span class="Comment">//: hook replaced in a later layer</span>
+<span id="L132" class="LineNr">132 </span><span class="Normal">int</span>&amp; <a href='026call.cc.html#L82'>current_step_index</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L133" class="LineNr">133 </span>  <span class="Identifier">return</span> Current_routine<span class="Delimiter">-&gt;</span>running_step_index<span class="Delimiter">;</span>
+<span id="L134" class="LineNr">134 </span><span class="Delimiter">}</span>
+<span id="L135" class="LineNr">135 </span>
+<span id="L136" class="LineNr">136 </span><span class="Comment">//: hook replaced in a later layer</span>
+<span id="L137" class="LineNr">137 </span><a href='010vm.cc.html#L14'>recipe_ordinal</a> <a href='026call.cc.html#L83'>currently_running_recipe</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L138" class="LineNr">138 </span>  <span class="Identifier">return</span> Current_routine<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">;</span>
+<span id="L139" class="LineNr">139 </span><span class="Delimiter">}</span>
+<span id="L140" class="LineNr">140 </span>
+<span id="L141" class="LineNr">141 </span><span class="Comment">//: hook replaced in a later layer</span>
+<span id="L142" class="LineNr">142 </span><span class="Normal">const</span> string&amp; <a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L143" class="LineNr">143 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">).</span>name<span class="Delimiter">;</span>
+<span id="L144" class="LineNr">144 </span><span class="Delimiter">}</span>
+<span id="L145" class="LineNr">145 </span>
+<span id="L146" class="LineNr">146 </span><span class="Comment">//: hook replaced in a later layer</span>
+<span id="L147" class="LineNr">147 </span><span class="Normal">const</span> recipe&amp; <a href='026call.cc.html#L84'>current_recipe</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L148" class="LineNr">148 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">);</span>
+<span id="L149" class="LineNr">149 </span><span class="Delimiter">}</span>
+<span id="L150" class="LineNr">150 </span>
+<span id="L151" class="LineNr">151 </span><span class="Comment">//: hook replaced in a later layer</span>
+<span id="L152" class="LineNr">152 </span><span class="Normal">const</span> instruction&amp; <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L153" class="LineNr">153 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> Current_routine<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">).</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>running_step_index<span class="Delimiter">);</span>
+<span id="L154" class="LineNr">154 </span><span class="Delimiter">}</span>
+<span id="L155" class="LineNr">155 </span>
+<span id="L156" class="LineNr">156 </span><span class="Comment">//: hook replaced in a later layer</span>
+<span id="L157" class="LineNr">157 </span><span class="Normal">bool</span> routine::completed<span class="Delimiter">()</span> <span class="Normal">const</span> <span class="Delimiter">{</span>
+<span id="L158" class="LineNr">158 </span>  <span class="Identifier">return</span> running_step_index &gt;= <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> running_recipe<span class="Delimiter">).</span>steps<span class="Delimiter">);</span>
+<span id="L159" class="LineNr">159 </span><span class="Delimiter">}</span>
+<span id="L160" class="LineNr">160 </span>
+<span id="L161" class="LineNr">161 </span><span class="Comment">//: hook replaced in a later layer</span>
+<span id="L162" class="LineNr">162 </span><span class="Normal">const</span> vector&lt;instruction&gt;&amp; routine::steps<span class="Delimiter">()</span> <span class="Normal">const</span> <span class="Delimiter">{</span>
+<span id="L163" class="LineNr">163 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> running_recipe<span class="Delimiter">).</span>steps<span class="Delimiter">;</span>
+<span id="L164" class="LineNr">164 </span><span class="Delimiter">}</span>
+<span id="L165" class="LineNr">165 </span>
+<span id="L166" class="LineNr">166 </span><span class="SalientComment">//:: Startup flow</span>
+<span id="L167" class="LineNr">167 </span>
+<span id="L168" class="LineNr">168 </span><span class="Comment">//: Step 1: load all .mu files with numeric prefixes (in order)</span>
+<span id="L169" class="LineNr">169 </span><span class="Delimiter">:(before &quot;End Load Recipes&quot;)</span>
+<span id="L170" class="LineNr">170 </span><span class="Comment">// Load Mu Prelude</span>
+<span id="L171" class="LineNr">171 </span><span class="CommentedCode">//? Save_trace = true;</span>
+<span id="L172" class="LineNr">172 </span><span class="CommentedCode">//? START_TRACING_UNTIL_END_OF_SCOPE;</span>
+<span id="L173" class="LineNr">173 </span>load_file_or_directory<span class="Delimiter">(</span><span class="Constant">&quot;core.mu&quot;</span><span class="Delimiter">);</span>
+<span id="L174" class="LineNr">174 </span><span class="CommentedCode">//? DUMP(&quot;&quot;);</span>
+<span id="L175" class="LineNr">175 </span><span class="CommentedCode">//? exit(0);</span>
+<span id="L176" class="LineNr">176 </span>
+<span id="L177" class="LineNr">177 </span><span class="Comment">//: Step 2: load any .mu files provided at the commandline</span>
+<span id="L178" class="LineNr">178 </span><span class="Delimiter">:(before &quot;End Commandline Parsing&quot;)</span>
+<span id="L179" class="LineNr">179 </span><span class="Comment">// Check For .mu Files</span>
+<span id="L180" class="LineNr">180 </span><span class="CommentedCode">//? START_TRACING_UNTIL_END_OF_SCOPE</span>
+<span id="L181" class="LineNr">181 </span><span class="CommentedCode">//? Dump_trace = true;</span>
+<span id="L182" class="LineNr">182 </span><span class="Normal">if</span> <span class="Delimiter">(</span>argc &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L183" class="LineNr">183 </span>  <span class="Comment">// skip argv[0]</span>
+<span id="L184" class="LineNr">184 </span>  ++argv<span class="Delimiter">;</span>
+<span id="L185" class="LineNr">185 </span>  --argc<span class="Delimiter">;</span>
+<span id="L186" class="LineNr">186 </span>  <span class="Normal">while</span> <span class="Delimiter">(</span>argc &gt; <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L187" class="LineNr">187 </span>  <span class="Conceal">¦</span> <span class="Comment">// ignore argv past '--'; that's commandline args for 'main'</span>
+<span id="L188" class="LineNr">188 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>string<span class="Delimiter">(</span>*argv<span class="Delimiter">)</span> == <span class="Constant">&quot;--&quot;</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L189" class="LineNr">189 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L77'>starts_with</a><span class="Delimiter">(</span>*argv<span class="Delimiter">,</span> <span class="Constant">&quot;--&quot;</span><span class="Delimiter">))</span>
+<span id="L190" class="LineNr">190 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> cerr &lt;&lt; <span class="Constant">&quot;treating &quot;</span> &lt;&lt; *argv &lt;&lt; <span class="Constant">&quot; as a file rather than an option</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
+<span id="L191" class="LineNr">191 </span>  <span class="Conceal">¦</span> load_file_or_directory<span class="Delimiter">(</span>*argv<span class="Delimiter">);</span>
+<span id="L192" class="LineNr">192 </span>  <span class="Conceal">¦</span> --argc<span class="Delimiter">;</span>
+<span id="L193" class="LineNr">193 </span>  <span class="Conceal">¦</span> ++argv<span class="Delimiter">;</span>
+<span id="L194" class="LineNr">194 </span>  <span class="Delimiter">}</span>
+<span id="L195" class="LineNr">195 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Run_tests<span class="Delimiter">)</span> Recipe<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">));</span>
+<span id="L196" class="LineNr">196 </span><span class="Delimiter">}</span>
+<span id="L197" class="LineNr">197 </span><a href='012transform.cc.html#L46'>transform_all</a><span class="Delimiter">();</span>
+<span id="L198" class="LineNr">198 </span><span class="CommentedCode">//? cerr &lt;&lt; to_original_string(get(Type_ordinal, &quot;editor&quot;)) &lt;&lt; '\n';</span>
+<span id="L199" class="LineNr">199 </span><span class="CommentedCode">//? cerr &lt;&lt; to_original_string(get(Recipe, get(Recipe_ordinal, &quot;event-loop&quot;))) &lt;&lt; '\n';</span>
+<span id="L200" class="LineNr">200 </span><span class="CommentedCode">//? DUMP(&quot;&quot;);</span>
+<span id="L201" class="LineNr">201 </span><span class="CommentedCode">//? exit(0);</span>
+<span id="L202" class="LineNr">202 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L192'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
+<span id="L203" class="LineNr">203 </span>save_snapshots<span class="Delimiter">();</span>
+<span id="L204" class="LineNr">204 </span>
+<span id="L205" class="LineNr">205 </span><span class="Comment">//: Step 3: if we aren't running tests, locate a recipe called 'main' and</span>
+<span id="L206" class="LineNr">206 </span><span class="Comment">//: start running it.</span>
+<span id="L207" class="LineNr">207 </span><span class="Delimiter">:(before &quot;End Main&quot;)</span>
+<span id="L208" class="LineNr">208 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!Run_tests &amp;&amp; contains_key<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">)</span> &amp;&amp; contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
+<span id="L209" class="LineNr">209 </span>  <span class="Comment">// Running Main</span>
+<span id="L210" class="LineNr">210 </span>  <a href='000organization.cc.html#L134'>reset</a><span class="Delimiter">();</span>
+<span id="L211" class="LineNr">211 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Start_tracing<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L212" class="LineNr">212 </span>  <span class="Conceal">¦</span> Trace_stream = <span class="Normal">new</span> trace_stream<span class="Delimiter">;</span>
+<span id="L213" class="LineNr">213 </span>  <span class="Conceal">¦</span> Save_trace = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L214" class="LineNr">214 </span>  <span class="Delimiter">}</span>
+<span id="L215" class="LineNr">215 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;=== Starting to run&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L216" class="LineNr">216 </span>  assert<span class="Delimiter">(</span>Num_calls_to_transform_all == <span class="Constant">1</span><span class="Delimiter">);</span>
+<span id="L217" class="LineNr">217 </span>  <a href='073scheduler.cc.html#L122'>run_main</a><span class="Delimiter">(</span>argc<span class="Delimiter">,</span> argv<span class="Delimiter">);</span>
+<span id="L218" class="LineNr">218 </span><span class="Delimiter">}</span>
+<span id="L219" class="LineNr">219 </span><span class="Delimiter">:(code)</span>
+<span id="L220" class="LineNr">220 </span><span class="Normal">void</span> <a href='073scheduler.cc.html#L122'>run_main</a><span class="Delimiter">(</span><span class="Normal">int</span> argc<span class="Delimiter">,</span> <span class="Normal">char</span>* argv[]<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L221" class="LineNr">221 </span>  <a href='010vm.cc.html#L14'>recipe_ordinal</a> r = get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">);</span>
+<span id="L222" class="LineNr">222 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">)</span> run<span class="Delimiter">(</span>r<span class="Delimiter">);</span>
+<span id="L223" class="LineNr">223 </span><span class="Delimiter">}</span>
+<span id="L224" class="LineNr">224 </span>
+<span id="L225" class="LineNr">225 </span><span class="Comment">//: By default we don't maintain the trace while running main because its</span>
+<span id="L226" class="LineNr">226 </span><span class="Comment">//: overheads can grow rapidly. However, it's useful when debugging.</span>
+<span id="L227" class="LineNr">227 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
+<span id="L228" class="LineNr">228 </span><span class="Normal">bool</span> Start_tracing = <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L229" class="LineNr">229 </span><span class="Delimiter">:(before &quot;End Commandline Options(*arg)&quot;)</span>
+<span id="L230" class="LineNr">230 </span><span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L73'>is_equal</a><span class="Delimiter">(</span>*arg<span class="Delimiter">,</span> <span class="Constant">&quot;--trace&quot;</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L231" class="LineNr">231 </span>  Start_tracing = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L232" class="LineNr">232 </span><span class="Delimiter">}</span>
+<span id="L233" class="LineNr">233 </span>
+<span id="L234" class="LineNr">234 </span><span class="Delimiter">:(code)</span>
+<span id="L235" class="LineNr">235 </span><span class="Normal">void</span> cleanup_main<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L236" class="LineNr">236 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Save_trace &amp;&amp; Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L237" class="LineNr">237 </span>  <span class="Conceal">¦</span> cerr &lt;&lt; <span class="Constant">&quot;writing <a href='003trace.cc.html#L161'>trace</a> to 'last_run'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
+<span id="L238" class="LineNr">238 </span>  <span class="Conceal">¦</span> ofstream fout<span class="Delimiter">(</span><span class="Constant">&quot;last_run&quot;</span><span class="Delimiter">);</span>
+<span id="L239" class="LineNr">239 </span>  <span class="Conceal">¦</span> fout &lt;&lt; Trace_stream<span class="Delimiter">-&gt;</span><a href='003trace.cc.html#L143'>readable_contents</a><span class="Delimiter">(</span><span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>
+<span id="L240" class="LineNr">240 </span>  <span class="Conceal">¦</span> fout<span class="Delimiter">.</span>close<span class="Delimiter">();</span>
+<span id="L241" class="LineNr">241 </span>  <span class="Delimiter">}</span>
+<span id="L242" class="LineNr">242 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Normal">delete</span> Trace_stream<span class="Delimiter">,</span> Trace_stream = <span class="Constant">NULL</span><span class="Delimiter">;</span>
+<span id="L243" class="LineNr">243 </span><span class="Delimiter">}</span>
+<span id="L244" class="LineNr">244 </span><span class="Delimiter">:(before &quot;End One-time Setup&quot;)</span>
+<span id="L245" class="LineNr">245 </span>atexit<span class="Delimiter">(</span>cleanup_main<span class="Delimiter">);</span>
+<span id="L246" class="LineNr">246 </span>
+<span id="L247" class="LineNr">247 </span><span class="Delimiter">:(code)</span>
+<span id="L248" class="LineNr">248 </span><span class="Normal">void</span> load_file_or_directory<span class="Delimiter">(</span>string filename<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L249" class="LineNr">249 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_directory<span class="Delimiter">(</span>filename<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L250" class="LineNr">250 </span>  <span class="Conceal">¦</span> load_all<span class="Delimiter">(</span>filename<span class="Delimiter">);</span>
+<span id="L251" class="LineNr">251 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L252" class="LineNr">252 </span>  <span class="Delimiter">}</span>
+<span id="L253" class="LineNr">253 </span>  ifstream fin<span class="Delimiter">(</span>filename<span class="Delimiter">.</span>c_str<span class="Delimiter">());</span>
+<span id="L254" class="LineNr">254 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!fin<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L255" class="LineNr">255 </span>  <span class="Conceal">¦</span> cerr &lt;&lt; <span class="Constant">&quot;no such file '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>  <span class="Comment">// don't raise, just warn. just in case it's just a name for a scenario to run.</span>
+<span id="L256" class="LineNr">256 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L257" class="LineNr">257 </span>  <span class="Delimiter">}</span>
+<span id="L258" class="LineNr">258 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">9990</span><span class="Delimiter">,</span> <span class="Constant">&quot;load&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;=== &quot;</span> &lt;&lt; filename &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L259" class="LineNr">259 </span>  load<span class="Delimiter">(</span>fin<span class="Delimiter">);</span>
+<span id="L260" class="LineNr">260 </span>  fin<span class="Delimiter">.</span>close<span class="Delimiter">();</span>
+<span id="L261" class="LineNr">261 </span><span class="Delimiter">}</span>
+<span id="L262" class="LineNr">262 </span>
+<span id="L263" class="LineNr">263 </span><span class="Normal">bool</span> is_directory<span class="Delimiter">(</span>string path<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L264" class="LineNr">264 </span>  <span class="Normal">struct</span> stat info<span class="Delimiter">;</span>
+<span id="L265" class="LineNr">265 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>stat<span class="Delimiter">(</span>path<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> &amp;info<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>  <span class="Comment">// error</span>
+<span id="L266" class="LineNr">266 </span>  <span class="Identifier">return</span> info<span class="Delimiter">.</span>st_mode &amp; S_IFDIR<span class="Delimiter">;</span>
+<span id="L267" class="LineNr">267 </span><span class="Delimiter">}</span>
+<span id="L268" class="LineNr">268 </span>
+<span id="L269" class="LineNr">269 </span><span class="Normal">void</span> load_all<span class="Delimiter">(</span>string dir<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L270" class="LineNr">270 </span>  dirent** files<span class="Delimiter">;</span>
+<span id="L271" class="LineNr">271 </span>  <span class="Normal">int</span> num_files = scandir<span class="Delimiter">(</span>dir<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> &amp;files<span class="Delimiter">,</span> <span class="Constant">NULL</span><span class="Delimiter">,</span> alphasort<span class="Delimiter">);</span>
+<span id="L272" class="LineNr">272 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; num_files<span class="Delimiter">;</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L273" class="LineNr">273 </span>  <span class="Conceal">¦</span> string curr_file = files[i]<span class="Delimiter">-&gt;</span>d_name<span class="Delimiter">;</span>
+<span id="L274" class="LineNr">274 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>isdigit<span class="Delimiter">(</span>curr_file<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span>
+<span id="L275" class="LineNr">275 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> load_file_or_directory<span class="Delimiter">(</span>dir+<span class="Constant">'/'</span>+curr_file<span class="Delimiter">);</span>
+<span id="L276" class="LineNr">276 </span>  <span class="Conceal">¦</span> free<span class="Delimiter">(</span>files[i]<span class="Delimiter">);</span>
+<span id="L277" class="LineNr">277 </span>  <span class="Conceal">¦</span> files[i] = <span class="Constant">NULL</span><span class="Delimiter">;</span>
+<span id="L278" class="LineNr">278 </span>  <span class="Delimiter">}</span>
+<span id="L279" class="LineNr">279 </span>  free<span class="Delimiter">(</span>files<span class="Delimiter">);</span>
+<span id="L280" class="LineNr">280 </span><span class="Delimiter">}</span>
+<span id="L281" class="LineNr">281 </span><span class="Delimiter">:(before &quot;End Includes&quot;)</span>
+<span id="L282" class="LineNr">282 </span><span class="PreProc">#include </span><span class="Constant">&lt;dirent.h&gt;</span>
+<span id="L283" class="LineNr">283 </span><span class="PreProc">#include </span><span class="Constant">&lt;sys/stat.h&gt;</span>
+<span id="L284" class="LineNr">284 </span>
+<span id="L285" class="LineNr">285 </span><span class="SalientComment">//:: Reading from memory, writing to memory.</span>
+<span id="L286" class="LineNr">286 </span>
+<span id="L287" class="LineNr">287 </span><span class="Delimiter">:(code)</span>
+<span id="L288" class="LineNr">288 </span>vector&lt;<span class="Normal">double</span>&gt; read_memory<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L289" class="LineNr">289 </span>  <span class="Comment">// Begin Preprocess read_memory(x)</span>
+<span id="L290" class="LineNr">290 </span>  vector&lt;<span class="Normal">double</span>&gt; result<span class="Delimiter">;</span>
+<span id="L291" class="LineNr">291 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L292" class="LineNr">292 </span>  <span class="Conceal">¦</span> result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>x<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
+<span id="L293" class="LineNr">293 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
+<span id="L294" class="LineNr">294 </span>  <span class="Delimiter">}</span>
+<span id="L295" class="LineNr">295 </span>  <span class="Comment">// End Preprocess read_memory(x)</span>
+<span id="L296" class="LineNr">296 </span>  <span class="Normal">int</span> size = size_of<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
+<span id="L297" class="LineNr">297 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> offset = <span class="Constant">0</span><span class="Delimiter">;</span>  offset &lt; size<span class="Delimiter">;</span>  ++offset<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L298" class="LineNr">298 </span>  <span class="Conceal">¦</span> <span class="Normal">double</span> val = <a href='001help.cc.html#L228'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> x<span class="Delimiter">.</span>value+offset<span class="Delimiter">);</span>
+<span id="L299" class="LineNr">299 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;location &quot;</span> &lt;&lt; x<span class="Delimiter">.</span>value+offset &lt;&lt; <span class="Constant">&quot; is &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>val<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L300" class="LineNr">300 </span>  <span class="Conceal">¦</span> result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>val<span class="Delimiter">);</span>
+<span id="L301" class="LineNr">301 </span>  <span class="Delimiter">}</span>
+<span id="L302" class="LineNr">302 </span>  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
+<span id="L303" class="LineNr">303 </span><span class="Delimiter">}</span>
+<span id="L304" class="LineNr">304 </span>
+<span id="L305" class="LineNr">305 </span><span class="Normal">void</span> write_memory<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">,</span> <span class="Normal">const</span> vector&lt;<span class="Normal">double</span>&gt;&amp; data<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L306" class="LineNr">306 </span>  assert<span class="Delimiter">(</span>Current_routine<span class="Delimiter">);</span>  <span class="Comment">// run-time only</span>
+<span id="L307" class="LineNr">307 </span>  <span class="Comment">// Begin Preprocess write_memory(x, data)</span>
+<span id="L308" class="LineNr">308 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L309" class="LineNr">309 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;can't write to '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L162'>to_string</a><span class="Delimiter">(</span>x<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'; no type</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+<span id="L310" class="LineNr">310 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L311" class="LineNr">311 </span>  <span class="Delimiter">}</span>
+<span id="L312" class="LineNr">312 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L313" class="LineNr">313 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L314" class="LineNr">314 </span>  <span class="Comment">// End Preprocess write_memory(x, data)</span>
+<span id="L315" class="LineNr">315 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>value == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L316" class="LineNr">316 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;can't write to location 0 in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+<span id="L317" class="LineNr">317 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L318" class="LineNr">318 </span>  <span class="Delimiter">}</span>
+<span id="L319" class="LineNr">319 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>size_mismatch<span class="Delimiter">(</span>x<span class="Delimiter">,</span> data<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L320" class="LineNr">320 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;size mismatch in storing to '&quot;</span> &lt;&lt; x<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' (&quot;</span> &lt;&lt; size_of<span class="Delimiter">(</span>x<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; vs &quot;</span> &lt;&lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>data<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;) at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L321" class="LineNr">321 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L322" class="LineNr">322 </span>  <span class="Delimiter">}</span>
+<span id="L323" class="LineNr">323 </span>  <span class="Comment">// End write_memory(x) Special-cases</span>
+<span id="L324" class="LineNr">324 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> offset = <span class="Constant">0</span><span class="Delimiter">;</span>  offset &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>data<span class="Delimiter">);</span>  ++offset<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L325" class="LineNr">325 </span>  <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>x<span class="Delimiter">.</span>value+offset &gt; <span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L326" class="LineNr">326 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>data<span class="Delimiter">.</span>at<span class="Delimiter">(</span>offset<span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; x<span class="Delimiter">.</span>value+offset &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L327" class="LineNr">327 </span><span class="CommentedCode">//?     if (Foo) cerr &lt;&lt; &quot;mem: storing &quot; &lt;&lt; no_scientific(data.at(offset)) &lt;&lt; &quot; in location &quot; &lt;&lt; x.value+offset &lt;&lt; '\n';</span>
+<span id="L328" class="LineNr">328 </span>  <span class="Conceal">¦</span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> x<span class="Delimiter">.</span>value+offset<span class="Delimiter">,</span> data<span class="Delimiter">.</span>at<span class="Delimiter">(</span>offset<span class="Delimiter">));</span>
+<span id="L329" class="LineNr">329 </span>  <span class="Delimiter">}</span>
+<span id="L330" class="LineNr">330 </span><span class="Delimiter">}</span>
+<span id="L331" class="LineNr">331 </span>
+<span id="L332" class="LineNr">332 </span><span class="Delimiter">:(code)</span>
+<span id="L333" class="LineNr">333 </span><span class="Normal">int</span> size_of<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L334" class="LineNr">334 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
+<span id="L335" class="LineNr">335 </span>  <span class="Comment">// End size_of(reagent r) Special-cases</span>
+<span id="L336" class="LineNr">336 </span>  <span class="Identifier">return</span> size_of<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
+<span id="L337" class="LineNr">337 </span><span class="Delimiter">}</span>
+<span id="L338" class="LineNr">338 </span><span class="Normal">int</span> size_of<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L339" class="LineNr">339 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
+<span id="L340" class="LineNr">340 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L341" class="LineNr">341 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>value == -<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>  <span class="Comment">// error value, but we'll raise it elsewhere</span>
+<span id="L342" class="LineNr">342 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>value == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
+<span id="L343" class="LineNr">343 </span>  <span class="Conceal">¦</span> <span class="Comment">// End size_of(type) Atom Special-cases</span>
+<span id="L344" class="LineNr">344 </span>  <span class="Delimiter">}</span>
+<span id="L345" class="LineNr">345 </span>  <span class="Normal">else</span> <span class="Delimiter">{</span>
+<span id="L346" class="LineNr">346 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L347" class="LineNr">347 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <span class="Constant">&quot;invalid type &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L162'>to_string</a><span class="Delimiter">(</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L348" class="LineNr">348 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
+<span id="L349" class="LineNr">349 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L350" class="LineNr">350 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;address&quot;</span><span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
+<span id="L351" class="LineNr">351 </span>  <span class="Conceal">¦</span> <span class="Comment">// End size_of(type) Non-atom Special-cases</span>
+<span id="L352" class="LineNr">352 </span>  <span class="Delimiter">}</span>
+<span id="L353" class="LineNr">353 </span>  <span class="Comment">// End size_of(type) Special-cases</span>
+<span id="L354" class="LineNr">354 </span>  <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
+<span id="L355" class="LineNr">355 </span><span class="Delimiter">}</span>
+<span id="L356" class="LineNr">356 </span>
+<span id="L357" class="LineNr">357 </span><span class="Normal">bool</span> size_mismatch<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">,</span> <span class="Normal">const</span> vector&lt;<span class="Normal">double</span>&gt;&amp; data<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L358" class="LineNr">358 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L359" class="LineNr">359 </span>  <span class="Comment">// End size_mismatch(x) Special-cases</span>
+<span id="L360" class="LineNr">360 </span><span class="CommentedCode">//?   if (size_of(x) != SIZE(data)) cerr &lt;&lt; size_of(x) &lt;&lt; &quot; vs &quot; &lt;&lt; SIZE(data) &lt;&lt; '\n';</span>
+<span id="L361" class="LineNr">361 </span>  <span class="Identifier">return</span> size_of<span class="Delimiter">(</span>x<span class="Delimiter">)</span> != <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>data<span class="Delimiter">);</span>
+<span id="L362" class="LineNr">362 </span><span class="Delimiter">}</span>
+<span id="L363" class="LineNr">363 </span>
+<span id="L364" class="LineNr">364 </span><span class="Normal">bool</span> is_literal<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L365" class="LineNr">365 </span>  <span class="Identifier">return</span> is_literal<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
+<span id="L366" class="LineNr">366 </span><span class="Delimiter">}</span>
+<span id="L367" class="LineNr">367 </span><span class="Normal">bool</span> is_literal<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L368" class="LineNr">368 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L369" class="LineNr">369 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L370" class="LineNr">370 </span>  <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>value == <span class="Constant">0</span><span class="Delimiter">;</span>
+<span id="L371" class="LineNr">371 </span><span class="Delimiter">}</span>
+<span id="L372" class="LineNr">372 </span>
+<span id="L373" class="LineNr">373 </span><span class="Normal">bool</span> scalar<span class="Delimiter">(</span><span class="Normal">const</span> vector&lt;<span class="Normal">int</span>&gt;&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L374" class="LineNr">374 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>x<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">;</span>
+<span id="L375" class="LineNr">375 </span><span class="Delimiter">}</span>
+<span id="L376" class="LineNr">376 </span><span class="Normal">bool</span> scalar<span class="Delimiter">(</span><span class="Normal">const</span> vector&lt;<span class="Normal">double</span>&gt;&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L377" class="LineNr">377 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>x<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">;</span>
+<span id="L378" class="LineNr">378 </span><span class="Delimiter">}</span>
+<span id="L379" class="LineNr">379 </span>
+<span id="L380" class="LineNr">380 </span><span class="Comment">// helper for tests</span>
+<span id="L381" class="LineNr">381 </span><span class="Normal">void</span> run<span class="Delimiter">(</span><span class="Normal">const</span> string&amp; form<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L382" class="LineNr">382 </span>  vector&lt;recipe_ordinal&gt; tmp = load<span class="Delimiter">(</span>form<span class="Delimiter">);</span>
+<span id="L383" class="LineNr">383 </span>  <a href='012transform.cc.html#L46'>transform_all</a><span class="Delimiter">();</span>
+<span id="L384" class="LineNr">384 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>tmp<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L385" class="LineNr">385 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L192'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L386" class="LineNr">386 </span>  <span class="Comment">// if a test defines main, it probably wants to start there regardless of</span>
+<span id="L387" class="LineNr">387 </span>  <span class="Comment">// definition order</span>
+<span id="L388" class="LineNr">388 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">)))</span>
+<span id="L389" class="LineNr">389 </span>  <span class="Conceal">¦</span> run<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">));</span>
+<span id="L390" class="LineNr">390 </span>  <span class="Normal">else</span>
+<span id="L391" class="LineNr">391 </span>  <span class="Conceal">¦</span> run<span class="Delimiter">(</span>tmp<span class="Delimiter">.</span>front<span class="Delimiter">());</span>
+<span id="L392" class="LineNr">392 </span><span class="Delimiter">}</span>
+<span id="L393" class="LineNr">393 </span>
+<span id="L394" class="LineNr">394 </span><span class="Delimiter">:(scenario run_label)</span>
+<span id="L395" class="LineNr">395 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L396" class="LineNr">396 </span>  +foo
+<span id="L397" class="LineNr">397 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
+<span id="L398" class="LineNr">398 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">1</span>:num
+<span id="L399" class="LineNr">399 </span>]
+<span id="L400" class="LineNr">400 </span><span class="traceContains">+run: {1: &quot;number&quot;} &lt;- copy {23: &quot;literal&quot;}</span>
+<span id="L401" class="LineNr">401 </span><span class="traceContains">+run: {2: &quot;number&quot;} &lt;- copy {1: &quot;number&quot;}</span>
+<span id="L402" class="LineNr">402 </span><span class="traceAbsent">-run: +foo</span>
+<span id="L403" class="LineNr">403 </span>
+<span id="L404" class="LineNr">404 </span><span class="Delimiter">:(scenario run_dummy)</span>
+<span id="L405" class="LineNr">405 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L406" class="LineNr">406 </span>  _<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
+<span id="L407" class="LineNr">407 </span>]
+<span id="L408" class="LineNr">408 </span><span class="traceContains">+run: _ &lt;- copy {0: &quot;literal&quot;}</span>
+<span id="L409" class="LineNr">409 </span>
+<span id="L410" class="LineNr">410 </span><span class="Delimiter">:(scenario write_to_0_disallowed)</span>
+<span id="L411" class="LineNr">411 </span><span class="Special">% Hide_errors = true;</span>
+<span id="L412" class="LineNr">412 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L413" class="LineNr">413 </span>  <span class="Constant">0</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
+<span id="L414" class="LineNr">414 </span>]
+<span id="L415" class="LineNr">415 </span><span class="traceAbsent">-mem: storing 34 in location 0</span>
+<span id="L416" class="LineNr">416 </span>
+<span id="L417" class="LineNr">417 </span><span class="Comment">//: Mu is robust to various combinations of commas and spaces. You just have</span>
+<span id="L418" class="LineNr">418 </span><span class="Comment">//: to put spaces around the '&lt;-'.</span>
+<span id="L419" class="LineNr">419 </span>
+<span id="L420" class="LineNr">420 </span><span class="Delimiter">:(scenario comma_without_space)</span>
+<span id="L421" class="LineNr">421 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L422" class="LineNr">422 </span>  <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">2</span><span class="Delimiter">,</span><span class="Constant">2</span>
+<span id="L423" class="LineNr">423 </span>]
+<span id="L424" class="LineNr">424 </span><span class="traceContains">+mem: storing 2 in location 1</span>
+<span id="L425" class="LineNr">425 </span>
+<span id="L426" class="LineNr">426 </span><span class="Delimiter">:(scenario space_without_comma)</span>
+<span id="L427" class="LineNr">427 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L428" class="LineNr">428 </span>  <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">2</span> <span class="Constant">2</span>
+<span id="L429" class="LineNr">429 </span>]
+<span id="L430" class="LineNr">430 </span><span class="traceContains">+mem: storing 2 in location 1</span>
+<span id="L431" class="LineNr">431 </span>
+<span id="L432" class="LineNr">432 </span><span class="Delimiter">:(scenario comma_before_space)</span>
+<span id="L433" class="LineNr">433 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L434" class="LineNr">434 </span>  <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">2</span>
+<span id="L435" class="LineNr">435 </span>]
+<span id="L436" class="LineNr">436 </span><span class="traceContains">+mem: storing 2 in location 1</span>
+<span id="L437" class="LineNr">437 </span>
+<span id="L438" class="LineNr">438 </span><span class="Delimiter">:(scenario comma_after_space)</span>
+<span id="L439" class="LineNr">439 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L440" class="LineNr">440 </span>  <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">2</span> <span class="Delimiter">,</span><span class="Constant">2</span>
+<span id="L441" class="LineNr">441 </span>]
+<span id="L442" class="LineNr">442 </span><span class="traceContains">+mem: storing 2 in location 1</span>
+<span id="L443" class="LineNr">443 </span>
+<span id="L444" class="LineNr">444 </span><span class="SalientComment">//:: Counters for trying to understand where Mu programs are spending their</span>
+<span id="L445" class="LineNr">445 </span><span class="SalientComment">//:: time.</span>
+<span id="L446" class="LineNr">446 </span>
+<span id="L447" class="LineNr">447 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
+<span id="L448" class="LineNr">448 </span><span class="Normal">bool</span> Run_profiler = <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L449" class="LineNr">449 </span><span class="Comment">// We'll key profile information by recipe_ordinal rather than name because</span>
+<span id="L450" class="LineNr">450 </span><span class="Comment">// it's more efficient, and because later layers will show more than just the</span>
+<span id="L451" class="LineNr">451 </span><span class="Comment">// name of a recipe.</span>
+<span id="L452" class="LineNr">452 </span><span class="Comment">//</span>
+<span id="L453" class="LineNr">453 </span><span class="Comment">// One drawback: if you're clearing recipes your profile will be inaccurate.</span>
+<span id="L454" class="LineNr">454 </span><span class="Comment">// So far that happens in tests, and in 'run-sandboxed' in a later layer.</span>
+<span id="L455" class="LineNr">455 </span>map&lt;recipe_ordinal<span class="Delimiter">,</span> <span class="Normal">int</span>&gt; Instructions_running<span class="Delimiter">;</span>
+<span id="L456" class="LineNr">456 </span><span class="Delimiter">:(before &quot;End Commandline Options(*arg)&quot;)</span>
+<span id="L457" class="LineNr">457 </span><span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L73'>is_equal</a><span class="Delimiter">(</span>*arg<span class="Delimiter">,</span> <span class="Constant">&quot;--profile&quot;</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L458" class="LineNr">458 </span>  Run_profiler = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L459" class="LineNr">459 </span><span class="Delimiter">}</span>
+<span id="L460" class="LineNr">460 </span><span class="Delimiter">:(after &quot;Running One Instruction&quot;)</span>
+<span id="L461" class="LineNr">461 </span><span class="Normal">if</span> <span class="Delimiter">(</span>Run_profiler<span class="Delimiter">)</span> Instructions_running[currently_running_recipe<span class="Delimiter">()</span>]++<span class="Delimiter">;</span>
+<span id="L462" class="LineNr">462 </span><span class="Delimiter">:(before &quot;End One-time Setup&quot;)</span>
+<span id="L463" class="LineNr">463 </span>atexit<span class="Delimiter">(</span>dump_profile<span class="Delimiter">);</span>
+<span id="L464" class="LineNr">464 </span><span class="Delimiter">:(code)</span>
+<span id="L465" class="LineNr">465 </span><span class="Normal">void</span> dump_profile<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L466" class="LineNr">466 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!Run_profiler<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L467" class="LineNr">467 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Run_tests<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L468" class="LineNr">468 </span>  <span class="Conceal">¦</span> cerr &lt;&lt; <span class="Constant">&quot;It's not a good idea to profile a run with tests, since tests can create conflicting recipes and mislead you. To try it anyway, comment out this check in the code.</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
+<span id="L469" class="LineNr">469 </span>  <span class="Conceal">¦</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L470" class="LineNr">470 </span>  <span class="Delimiter">}</span>
+<span id="L471" class="LineNr">471 </span>  ofstream fout<span class="Delimiter">;</span>
+<span id="L472" class="LineNr">472 </span>  fout<span class="Delimiter">.</span>open<span class="Delimiter">(</span><span class="Constant">&quot;profile.instructions&quot;</span><span class="Delimiter">);</span>
+<span id="L473" class="LineNr">473 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>fout<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L474" class="LineNr">474 </span>  <span class="Conceal">¦</span> <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;recipe_ordinal<span class="Delimiter">,</span> <span class="Normal">int</span>&gt;::iterator p = Instructions_running<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != Instructions_running<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L475" class="LineNr">475 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> fout &lt;&lt; std::setw<span class="Delimiter">(</span><span class="Constant">9</span><span class="Delimiter">)</span> &lt;&lt; p<span class="Delimiter">-&gt;</span>second &lt;&lt; <span class="Constant">' '</span> &lt;&lt; header_label<span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
+<span id="L476" class="LineNr">476 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L477" class="LineNr">477 </span>  <span class="Delimiter">}</span>
+<span id="L478" class="LineNr">478 </span>  fout<span class="Delimiter">.</span>close<span class="Delimiter">();</span>
+<span id="L479" class="LineNr">479 </span>  <span class="Comment">// End dump_profile</span>
+<span id="L480" class="LineNr">480 </span><span class="Delimiter">}</span>
+<span id="L481" class="LineNr">481 </span>
+<span id="L482" class="LineNr">482 </span><span class="Comment">// overridden in a later layer</span>
+<span id="L483" class="LineNr">483 </span>string header_label<span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L484" class="LineNr">484 </span>  <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">;</span>
+<span id="L485" class="LineNr">485 </span><span class="Delimiter">}</span>
 </pre>
 </body>
 </html>
diff --git a/html/036refcount.cc.html b/html/036refcount.cc.html
index d8667152..8cb40e7a 100644
--- a/html/036refcount.cc.html
+++ b/html/036refcount.cc.html
@@ -1116,30 +1116,32 @@ if ('onhashchange' in window) {
 <span id="L1051" class="LineNr">1051 </span>  initial_num_refcount_updates = Total_refcount_updates<span class="Delimiter">;</span>
 <span id="L1052" class="LineNr">1052 </span><span class="Delimiter">}</span>
 <span id="L1053" class="LineNr">1053 </span><span class="Delimiter">:(before &quot;End Non-primitive Call(caller_frame)&quot;)</span>
-<span id="L1054" class="LineNr">1054 </span>Num_refcount_updates[caller_frame<span class="Delimiter">.</span>running_recipe][caller_frame<span class="Delimiter">.</span>running_step_index]
-<span id="L1055" class="LineNr">1055 </span>  <span class="Conceal">¦</span> += <span class="Delimiter">(</span>Total_refcount_updates - initial_num_refcount_updates<span class="Delimiter">);</span>
-<span id="L1056" class="LineNr">1056 </span>initial_num_refcount_updates = Total_refcount_updates<span class="Delimiter">;</span>
-<span id="L1057" class="LineNr">1057 </span><span class="Delimiter">:(after &quot;Begin Return&quot;)</span>
-<span id="L1058" class="LineNr">1058 </span><span class="Normal">if</span> <span class="Delimiter">(</span>Run_profiler<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L1059" class="LineNr">1059 </span>  Num_refcount_updates[current_call<span class="Delimiter">().</span>running_recipe][current_call<span class="Delimiter">().</span>running_step_index]
-<span id="L1060" class="LineNr">1060 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> += <span class="Delimiter">(</span>Total_refcount_updates - initial_num_refcount_updates<span class="Delimiter">);</span>
-<span id="L1061" class="LineNr">1061 </span>  initial_num_refcount_updates = Total_refcount_updates<span class="Delimiter">;</span>
-<span id="L1062" class="LineNr">1062 </span><span class="Delimiter">}</span>
-<span id="L1063" class="LineNr">1063 </span><span class="Delimiter">:(before &quot;End dump_profile&quot;)</span>
-<span id="L1064" class="LineNr">1064 </span>fout<span class="Delimiter">.</span>open<span class="Delimiter">(</span><span class="Constant">&quot;profile.refcounts&quot;</span><span class="Delimiter">);</span>
-<span id="L1065" class="LineNr">1065 </span><span class="Normal">if</span> <span class="Delimiter">(</span>fout<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L1066" class="LineNr">1066 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;recipe_ordinal<span class="Delimiter">,</span> recipe&gt;::iterator p = Recipe<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != Recipe<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span>
-<span id="L1067" class="LineNr">1067 </span>  <span class="Conceal">¦</span> <a href='036refcount.cc.html#L1071'>dump_recipe_profile</a><span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">,</span> p<span class="Delimiter">-&gt;</span>second<span class="Delimiter">,</span> fout<span class="Delimiter">);</span>
-<span id="L1068" class="LineNr">1068 </span><span class="Delimiter">}</span>
-<span id="L1069" class="LineNr">1069 </span>fout<span class="Delimiter">.</span>close<span class="Delimiter">();</span>
-<span id="L1070" class="LineNr">1070 </span><span class="Delimiter">:(code)</span>
-<span id="L1071" class="LineNr">1071 </span><span class="Normal">void</span> <a href='036refcount.cc.html#L1071'>dump_recipe_profile</a><span class="Delimiter">(</span><a href='010vm.cc.html#L14'>recipe_ordinal</a> ridx<span class="Delimiter">,</span> <span class="Normal">const</span> recipe&amp; r<span class="Delimiter">,</span> ostream&amp; out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L1072" class="LineNr">1072 </span>  out &lt;&lt; <span class="Constant">&quot;recipe &quot;</span> &lt;&lt; r<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; [</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
-<span id="L1073" class="LineNr">1073 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>r<span class="Delimiter">.</span>steps<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L1074" class="LineNr">1074 </span>  <span class="Conceal">¦</span> out &lt;&lt; std::setw<span class="Delimiter">(</span><span class="Constant">6</span><span class="Delimiter">)</span> &lt;&lt; Num_refcount_updates[ridx][i] &lt;&lt; <span class="Constant">' '</span> &lt;&lt; <a href='028call_return.cc.html#L162'>to_string</a><span class="Delimiter">(</span>r<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
-<span id="L1075" class="LineNr">1075 </span>  <span class="Delimiter">}</span>
-<span id="L1076" class="LineNr">1076 </span>  out &lt;&lt; <span class="Constant">&quot;]</span><span class="cSpecial">\n\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
-<span id="L1077" class="LineNr">1077 </span><span class="Delimiter">}</span>
+<span id="L1054" class="LineNr">1054 </span><span class="Normal">if</span> <span class="Delimiter">(</span>Run_profiler<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L1055" class="LineNr">1055 </span>  Num_refcount_updates[caller_frame<span class="Delimiter">.</span>running_recipe][caller_frame<span class="Delimiter">.</span>running_step_index]
+<span id="L1056" class="LineNr">1056 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> += <span class="Delimiter">(</span>Total_refcount_updates - initial_num_refcount_updates<span class="Delimiter">);</span>
+<span id="L1057" class="LineNr">1057 </span>  initial_num_refcount_updates = Total_refcount_updates<span class="Delimiter">;</span>
+<span id="L1058" class="LineNr">1058 </span><span class="Delimiter">}</span>
+<span id="L1059" class="LineNr">1059 </span><span class="Delimiter">:(after &quot;Begin Return&quot;)</span>
+<span id="L1060" class="LineNr">1060 </span><span class="Normal">if</span> <span class="Delimiter">(</span>Run_profiler<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L1061" class="LineNr">1061 </span>  Num_refcount_updates[current_call<span class="Delimiter">().</span>running_recipe][current_call<span class="Delimiter">().</span>running_step_index]
+<span id="L1062" class="LineNr">1062 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> += <span class="Delimiter">(</span>Total_refcount_updates - initial_num_refcount_updates<span class="Delimiter">);</span>
+<span id="L1063" class="LineNr">1063 </span>  initial_num_refcount_updates = Total_refcount_updates<span class="Delimiter">;</span>
+<span id="L1064" class="LineNr">1064 </span><span class="Delimiter">}</span>
+<span id="L1065" class="LineNr">1065 </span><span class="Delimiter">:(before &quot;End dump_profile&quot;)</span>
+<span id="L1066" class="LineNr">1066 </span>fout<span class="Delimiter">.</span>open<span class="Delimiter">(</span><span class="Constant">&quot;profile.refcounts&quot;</span><span class="Delimiter">);</span>
+<span id="L1067" class="LineNr">1067 </span><span class="Normal">if</span> <span class="Delimiter">(</span>fout<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L1068" class="LineNr">1068 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;recipe_ordinal<span class="Delimiter">,</span> recipe&gt;::iterator p = Recipe<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != Recipe<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span>
+<span id="L1069" class="LineNr">1069 </span>  <span class="Conceal">¦</span> <a href='036refcount.cc.html#L1073'>dump_recipe_profile</a><span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">,</span> p<span class="Delimiter">-&gt;</span>second<span class="Delimiter">,</span> fout<span class="Delimiter">);</span>
+<span id="L1070" class="LineNr">1070 </span><span class="Delimiter">}</span>
+<span id="L1071" class="LineNr">1071 </span>fout<span class="Delimiter">.</span>close<span class="Delimiter">();</span>
+<span id="L1072" class="LineNr">1072 </span><span class="Delimiter">:(code)</span>
+<span id="L1073" class="LineNr">1073 </span><span class="Normal">void</span> <a href='036refcount.cc.html#L1073'>dump_recipe_profile</a><span class="Delimiter">(</span><a href='010vm.cc.html#L14'>recipe_ordinal</a> ridx<span class="Delimiter">,</span> <span class="Normal">const</span> recipe&amp; r<span class="Delimiter">,</span> ostream&amp; out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L1074" class="LineNr">1074 </span>  out &lt;&lt; <span class="Constant">&quot;recipe &quot;</span> &lt;&lt; r<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; [</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
+<span id="L1075" class="LineNr">1075 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>r<span class="Delimiter">.</span>steps<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L1076" class="LineNr">1076 </span>  <span class="Conceal">¦</span> out &lt;&lt; std::setw<span class="Delimiter">(</span><span class="Constant">6</span><span class="Delimiter">)</span> &lt;&lt; Num_refcount_updates[ridx][i] &lt;&lt; <span class="Constant">' '</span> &lt;&lt; <a href='028call_return.cc.html#L162'>to_string</a><span class="Delimiter">(</span>r<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
+<span id="L1077" class="LineNr">1077 </span>  <span class="Delimiter">}</span>
+<span id="L1078" class="LineNr">1078 </span>  out &lt;&lt; <span class="Constant">&quot;]</span><span class="cSpecial">\n\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
+<span id="L1079" class="LineNr">1079 </span><span class="Delimiter">}</span>
 </pre>
 </body>
 </html>
diff --git a/html/076continuation.cc.html b/html/076continuation.cc.html
index 3b5dbe58..1aaf4423 100644
--- a/html/076continuation.cc.html
+++ b/html/076continuation.cc.html
@@ -95,296 +95,299 @@ if ('onhashchange' in window) {
 <span id="L31" class="LineNr"> 31 </span><span class="Comment">//:  * 'return-continuation-until-mark' can take ingredients to return just</span>
 <span id="L32" class="LineNr"> 32 </span><span class="Comment">//:    like other 'return' instructions. It just implicitly also returns a</span>
 <span id="L33" class="LineNr"> 33 </span><span class="Comment">//:    continuation as the first result. See continuation4.mu.</span>
-<span id="L34" class="LineNr"> 34 </span><span class="Comment">//:</span>
-<span id="L35" class="LineNr"> 35 </span><span class="Comment">//: Caveats:</span>
-<span id="L36" class="LineNr"> 36 </span><span class="Comment">//:  * At the moment we can't statically type-check continuations. So we raise</span>
-<span id="L37" class="LineNr"> 37 </span><span class="Comment">//:    runtime errors for a call that doesn't return a continuation when the</span>
-<span id="L38" class="LineNr"> 38 </span><span class="Comment">//:    caller expects, or one that returns a continuation when the caller</span>
-<span id="L39" class="LineNr"> 39 </span><span class="Comment">//:    doesn't expect it. This shouldn't cause memory corruption, though.</span>
-<span id="L40" class="LineNr"> 40 </span><span class="Comment">//:    There should still be no way to lookup addresses that aren't allocated.</span>
-<span id="L41" class="LineNr"> 41 </span>
-<span id="L42" class="LineNr"> 42 </span><span class="Delimiter">:(before &quot;End Mu Types Initialization&quot;)</span>
-<span id="L43" class="LineNr"> 43 </span><a href='010vm.cc.html#L123'>type_ordinal</a> continuation = Type_ordinal[<span class="Constant">&quot;continuation&quot;</span>] = Next_type_ordinal++<span class="Delimiter">;</span>
-<span id="L44" class="LineNr"> 44 </span>Type[continuation]<span class="Delimiter">.</span>name = <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">;</span>
-<span id="L45" class="LineNr"> 45 </span>
-<span id="L46" class="LineNr"> 46 </span><span class="Comment">//: A continuation can be called like a recipe.</span>
-<span id="L47" class="LineNr"> 47 </span><span class="Delimiter">:(before &quot;End <a href='072recipe.cc.html#L277'>is_mu_recipe</a> Atom Cases(r)&quot;)</span>
-<span id="L48" class="LineNr"> 48 </span><span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L49" class="LineNr"> 49 </span>
-<span id="L50" class="LineNr"> 50 </span><span class="Comment">//: However, it can't be type-checked like most recipes. Pretend it's like a</span>
-<span id="L51" class="LineNr"> 51 </span><span class="Comment">//: header-less recipe.</span>
-<span id="L52" class="LineNr"> 52 </span><span class="Delimiter">:(after &quot;Begin Reagent-&gt;Recipe(r, recipe_header)&quot;)</span>
-<span id="L53" class="LineNr"> 53 </span><span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L54" class="LineNr"> 54 </span>  result_header<span class="Delimiter">.</span>has_header = <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L55" class="LineNr"> 55 </span>  <span class="Identifier">return</span> result_header<span class="Delimiter">;</span>
-<span id="L56" class="LineNr"> 56 </span><span class="Delimiter">}</span>
-<span id="L57" class="LineNr"> 57 </span>
-<span id="L58" class="LineNr"> 58 </span><span class="Delimiter">:(scenario delimited_continuation)</span>
-<span id="L59" class="LineNr"> 59 </span><span class="muRecipe"><a href='010vm.cc.html#L19'>recipe</a></span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L60" class="LineNr"> 60 </span>  <span class="Constant">1</span>:continuation<span class="Special"> &lt;- </span>call-with-continuation-mark f<span class="Delimiter">,</span> <span class="Constant">77</span>  <span class="Comment"># 77 is an argument to f</span>
-<span id="L61" class="LineNr"> 61 </span>  <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">5</span>
-<span id="L62" class="LineNr"> 62 </span>  <span class="Delimiter">{</span>
-<span id="L63" class="LineNr"> 63 </span>  <span class="Conceal">¦</span> <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>call <span class="Constant">1</span>:continuation<span class="Delimiter">,</span> <span class="Constant">2</span>:number  <span class="Comment"># 2 is an argument to g, the 'top' of the continuation</span>
-<span id="L64" class="LineNr"> 64 </span>  <span class="Conceal">¦</span> <span class="Constant">3</span>:boolean<span class="Special"> &lt;- </span>greater-<span class="Normal">or</span>-equal <span class="Constant">2</span>:number<span class="Delimiter">,</span> <span class="Constant">8</span>
-<span id="L65" class="LineNr"> 65 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span>-<span class="Normal">if</span> <span class="Constant">3</span>:boolean
-<span id="L66" class="LineNr"> 66 </span>  <span class="Conceal">¦</span> loop
-<span id="L67" class="LineNr"> 67 </span>  <span class="Delimiter">}</span>
-<span id="L68" class="LineNr"> 68 </span>]
-<span id="L69" class="LineNr"> 69 </span><span class="muRecipe"><a href='010vm.cc.html#L19'>recipe</a></span> f [
-<span id="L70" class="LineNr"> 70 </span>  <span class="Constant">11</span>:number<span class="Special"> &lt;- </span>next-ingredient
-<span id="L71" class="LineNr"> 71 </span>  <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>g <span class="Constant">11</span>:number
-<span id="L72" class="LineNr"> 72 </span>  <span class="Identifier">return</span> <span class="Constant">12</span>:number
-<span id="L73" class="LineNr"> 73 </span>]
-<span id="L74" class="LineNr"> 74 </span><span class="muRecipe"><a href='010vm.cc.html#L19'>recipe</a></span> g [
-<span id="L75" class="LineNr"> 75 </span>  <span class="Constant">21</span>:number<span class="Special"> &lt;- </span>next-ingredient
-<span id="L76" class="LineNr"> 76 </span>  rewind-ingredients
-<span id="L77" class="LineNr"> 77 </span>  <span class="Identifier">return</span>-continuation-until-mark
-<span id="L78" class="LineNr"> 78 </span>  <span class="Comment"># calls of the continuation start from here</span>
-<span id="L79" class="LineNr"> 79 </span>  <span class="Constant">22</span>:number<span class="Special"> &lt;- </span>next-ingredient
-<span id="L80" class="LineNr"> 80 </span>  <span class="Constant">23</span>:number<span class="Special"> &lt;- </span>add <span class="Constant">22</span>:number<span class="Delimiter">,</span> <span class="Constant">1</span>
-<span id="L81" class="LineNr"> 81 </span>  <span class="Identifier">return</span> <span class="Constant">23</span>:number
-<span id="L82" class="LineNr"> 82 </span>]
-<span id="L83" class="LineNr"> 83 </span><span class="Comment"># first call of 'g' executes the part before return-continuation-until-mark</span>
-<span id="L84" class="LineNr"> 84 </span><span class="traceContains">+mem: storing 77 in location 21</span>
-<span id="L85" class="LineNr"> 85 </span><span class="traceContains">+run: {2: &quot;number&quot;} &lt;- copy {5: &quot;literal&quot;}</span>
-<span id="L86" class="LineNr"> 86 </span><span class="traceContains">+mem: storing 5 in location 2</span>
-<span id="L87" class="LineNr"> 87 </span><span class="Comment"># calls of the continuation execute the part after return-continuation-until-mark</span>
-<span id="L88" class="LineNr"> 88 </span><span class="traceContains">+run: {2: &quot;number&quot;} &lt;- call {1: &quot;continuation&quot;}, {2: &quot;number&quot;}</span>
-<span id="L89" class="LineNr"> 89 </span><span class="traceContains">+mem: storing 5 in location 22</span>
-<span id="L90" class="LineNr"> 90 </span><span class="traceContains">+mem: storing 6 in location 2</span>
+<span id="L34" class="LineNr"> 34 </span><span class="Comment">//:  * Conversely, you can pass ingredients to a continuation when calling it,</span>
+<span id="L35" class="LineNr"> 35 </span><span class="Comment">//:    to make it available to products of 'return-continuation-until-mark'.</span>
+<span id="L36" class="LineNr"> 36 </span><span class="Comment">//:</span>
+<span id="L37" class="LineNr"> 37 </span><span class="Comment">//: Inspired by James and Sabry, &quot;Yield: Mainstream delimited continuations&quot;,</span>
+<span id="L38" class="LineNr"> 38 </span><span class="Comment">//: Workshop on the Theory and Practice of Delimited Continuations, 2011.</span>
+<span id="L39" class="LineNr"> 39 </span><span class="Comment">//: <a href="https://www.cs.indiana.edu/~sabry/papers/yield.pdf">https://www.cs.indiana.edu/~sabry/papers/yield.pdf</a></span>
+<span id="L40" class="LineNr"> 40 </span><span class="Comment">//:</span>
+<span id="L41" class="LineNr"> 41 </span><span class="Comment">//: Caveats:</span>
+<span id="L42" class="LineNr"> 42 </span><span class="Comment">//:  * At the moment we can't statically type-check continuations. So we raise</span>
+<span id="L43" class="LineNr"> 43 </span><span class="Comment">//:    runtime errors for a call that doesn't return a continuation when the</span>
+<span id="L44" class="LineNr"> 44 </span><span class="Comment">//:    caller expects, or one that returns a continuation when the caller</span>
+<span id="L45" class="LineNr"> 45 </span><span class="Comment">//:    doesn't expect it. This shouldn't cause memory corruption, though.</span>
+<span id="L46" class="LineNr"> 46 </span><span class="Comment">//:    There should still be no way to lookup addresses that aren't allocated.</span>
+<span id="L47" class="LineNr"> 47 </span>
+<span id="L48" class="LineNr"> 48 </span><span class="Delimiter">:(before &quot;End Mu Types Initialization&quot;)</span>
+<span id="L49" class="LineNr"> 49 </span><a href='010vm.cc.html#L123'>type_ordinal</a> continuation = Type_ordinal[<span class="Constant">&quot;continuation&quot;</span>] = Next_type_ordinal++<span class="Delimiter">;</span>
+<span id="L50" class="LineNr"> 50 </span>Type[continuation]<span class="Delimiter">.</span>name = <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">;</span>
+<span id="L51" class="LineNr"> 51 </span>
+<span id="L52" class="LineNr"> 52 </span><span class="Comment">//: A continuation can be called like a recipe.</span>
+<span id="L53" class="LineNr"> 53 </span><span class="Delimiter">:(before &quot;End <a href='072recipe.cc.html#L277'>is_mu_recipe</a> Atom Cases(r)&quot;)</span>
+<span id="L54" class="LineNr"> 54 </span><span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L55" class="LineNr"> 55 </span>
+<span id="L56" class="LineNr"> 56 </span><span class="Comment">//: However, it can't be type-checked like most recipes. Pretend it's like a</span>
+<span id="L57" class="LineNr"> 57 </span><span class="Comment">//: header-less recipe.</span>
+<span id="L58" class="LineNr"> 58 </span><span class="Delimiter">:(after &quot;Begin Reagent-&gt;Recipe(r, recipe_header)&quot;)</span>
+<span id="L59" class="LineNr"> 59 </span><span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L60" class="LineNr"> 60 </span>  result_header<span class="Delimiter">.</span>has_header = <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L61" class="LineNr"> 61 </span>  <span class="Identifier">return</span> result_header<span class="Delimiter">;</span>
+<span id="L62" class="LineNr"> 62 </span><span class="Delimiter">}</span>
+<span id="L63" class="LineNr"> 63 </span>
+<span id="L64" class="LineNr"> 64 </span><span class="Delimiter">:(scenario delimited_continuation)</span>
+<span id="L65" class="LineNr"> 65 </span><span class="muRecipe"><a href='010vm.cc.html#L19'>recipe</a></span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L66" class="LineNr"> 66 </span>  <span class="Constant">1</span>:continuation<span class="Special"> &lt;- </span>call-with-continuation-mark f<span class="Delimiter">,</span> <span class="Constant">77</span>  <span class="Comment"># 77 is an argument to f</span>
+<span id="L67" class="LineNr"> 67 </span>  <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">5</span>
+<span id="L68" class="LineNr"> 68 </span>  <span class="Delimiter">{</span>
+<span id="L69" class="LineNr"> 69 </span>  <span class="Conceal">¦</span> <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>call <span class="Constant">1</span>:continuation<span class="Delimiter">,</span> <span class="Constant">2</span>:number  <span class="Comment"># jump to 'return-continuation-until-mark' below</span>
+<span id="L70" class="LineNr"> 70 </span>  <span class="Conceal">¦</span> <span class="Constant">3</span>:boolean<span class="Special"> &lt;- </span>greater-<span class="Normal">or</span>-equal <span class="Constant">2</span>:number<span class="Delimiter">,</span> <span class="Constant">8</span>
+<span id="L71" class="LineNr"> 71 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span>-<span class="Normal">if</span> <span class="Constant">3</span>:boolean
+<span id="L72" class="LineNr"> 72 </span>  <span class="Conceal">¦</span> loop
+<span id="L73" class="LineNr"> 73 </span>  <span class="Delimiter">}</span>
+<span id="L74" class="LineNr"> 74 </span>]
+<span id="L75" class="LineNr"> 75 </span><span class="muRecipe"><a href='010vm.cc.html#L19'>recipe</a></span> f [
+<span id="L76" class="LineNr"> 76 </span>  <span class="Constant">11</span>:number<span class="Special"> &lt;- </span>next-ingredient
+<span id="L77" class="LineNr"> 77 </span>  <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>g <span class="Constant">11</span>:number
+<span id="L78" class="LineNr"> 78 </span>  <span class="Identifier">return</span> <span class="Constant">12</span>:number
+<span id="L79" class="LineNr"> 79 </span>]
+<span id="L80" class="LineNr"> 80 </span><span class="muRecipe"><a href='010vm.cc.html#L19'>recipe</a></span> g [
+<span id="L81" class="LineNr"> 81 </span>  <span class="Constant">21</span>:number<span class="Special"> &lt;- </span>next-ingredient
+<span id="L82" class="LineNr"> 82 </span>  <span class="Constant">22</span>:number<span class="Special"> &lt;- </span><span class="Identifier">return</span>-continuation-until-mark
+<span id="L83" class="LineNr"> 83 </span>  <span class="Constant">23</span>:number<span class="Special"> &lt;- </span>add <span class="Constant">22</span>:number<span class="Delimiter">,</span> <span class="Constant">1</span>
+<span id="L84" class="LineNr"> 84 </span>  <span class="Identifier">return</span> <span class="Constant">23</span>:number
+<span id="L85" class="LineNr"> 85 </span>]
+<span id="L86" class="LineNr"> 86 </span><span class="Comment"># first call of 'g' executes the part before return-continuation-until-mark</span>
+<span id="L87" class="LineNr"> 87 </span><span class="traceContains">+mem: storing 77 in location 21</span>
+<span id="L88" class="LineNr"> 88 </span><span class="traceContains">+run: {2: &quot;number&quot;} &lt;- copy {5: &quot;literal&quot;}</span>
+<span id="L89" class="LineNr"> 89 </span><span class="traceContains">+mem: storing 5 in location 2</span>
+<span id="L90" class="LineNr"> 90 </span><span class="Comment"># calls of the continuation execute the part after return-continuation-until-mark</span>
 <span id="L91" class="LineNr"> 91 </span><span class="traceContains">+run: {2: &quot;number&quot;} &lt;- call {1: &quot;continuation&quot;}, {2: &quot;number&quot;}</span>
-<span id="L92" class="LineNr"> 92 </span><span class="traceContains">+mem: storing 6 in location 22</span>
-<span id="L93" class="LineNr"> 93 </span><span class="traceContains">+mem: storing 7 in location 2</span>
+<span id="L92" class="LineNr"> 92 </span><span class="traceContains">+mem: storing 5 in location 22</span>
+<span id="L93" class="LineNr"> 93 </span><span class="traceContains">+mem: storing 6 in location 2</span>
 <span id="L94" class="LineNr"> 94 </span><span class="traceContains">+run: {2: &quot;number&quot;} &lt;- call {1: &quot;continuation&quot;}, {2: &quot;number&quot;}</span>
-<span id="L95" class="LineNr"> 95 </span><span class="traceContains">+mem: storing 7 in location 22</span>
-<span id="L96" class="LineNr"> 96 </span><span class="traceContains">+mem: storing 8 in location 2</span>
-<span id="L97" class="LineNr"> 97 </span><span class="Comment"># first call of 'g' does not execute the part after return-continuation-until-mark</span>
-<span id="L98" class="LineNr"> 98 </span><span class="traceAbsent">-mem: storing 77 in location 22</span>
-<span id="L99" class="LineNr"> 99 </span><span class="Comment"># calls of the continuation don't execute the part before return-continuation-until-mark</span>
-<span id="L100" class="LineNr">100 </span><span class="traceAbsent">-mem: storing 5 in location 21</span>
-<span id="L101" class="LineNr">101 </span><span class="traceAbsent">-mem: storing 6 in location 21</span>
-<span id="L102" class="LineNr">102 </span><span class="traceAbsent">-mem: storing 7 in location 21</span>
-<span id="L103" class="LineNr">103 </span><span class="Comment"># termination</span>
-<span id="L104" class="LineNr">104 </span><span class="traceAbsent">-mem: storing 9 in location 2</span>
-<span id="L105" class="LineNr">105 </span>
-<span id="L106" class="LineNr">106 </span><span class="Delimiter">:(before &quot;End call Fields&quot;)</span>
-<span id="L107" class="LineNr">107 </span><span class="Normal">bool</span> is_base_of_continuation<span class="Delimiter">;</span>
-<span id="L108" class="LineNr">108 </span><span class="Delimiter">:(before &quot;End call Constructor&quot;)</span>
-<span id="L109" class="LineNr">109 </span>is_base_of_continuation = <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L110" class="LineNr">110 </span>
-<span id="L111" class="LineNr">111 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
-<span id="L112" class="LineNr">112 </span>CALL_WITH_CONTINUATION_MARK<span class="Delimiter">,</span>
-<span id="L113" class="LineNr">113 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
-<span id="L114" class="LineNr">114 </span>Recipe_ordinal[<span class="Constant">&quot;call-with-continuation-mark&quot;</span>] = CALL_WITH_CONTINUATION_MARK<span class="Delimiter">;</span>
-<span id="L115" class="LineNr">115 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
-<span id="L116" class="LineNr">116 </span><span class="Normal">case</span> CALL_WITH_CONTINUATION_MARK: <span class="Delimiter">{</span>
-<span id="L117" class="LineNr">117 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L118" class="LineNr">118 </span><span class="Delimiter">}</span>
-<span id="L119" class="LineNr">119 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
-<span id="L120" class="LineNr">120 </span><span class="Normal">case</span> CALL_WITH_CONTINUATION_MARK: <span class="Delimiter">{</span>
-<span id="L121" class="LineNr">121 </span>  <span class="Comment">// like call, but mark the current call as a 'base of continuation' call</span>
-<span id="L122" class="LineNr">122 </span>  <span class="Comment">// before pushing the next one on it</span>
-<span id="L123" class="LineNr">123 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L124" class="LineNr">124 </span>  <span class="Conceal">¦</span> ++Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth<span class="Delimiter">;</span>
-<span id="L125" class="LineNr">125 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;trace&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;delimited continuation; incrementing callstack depth to &quot;</span> &lt;&lt; Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L126" class="LineNr">126 </span>  <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &lt; <span class="Constant">9000</span><span class="Delimiter">);</span>  <span class="Comment">// 9998-101 plus cushion</span>
-<span id="L127" class="LineNr">127 </span>  <span class="Delimiter">}</span>
-<span id="L128" class="LineNr">128 </span>  <span class="Normal">const</span> instruction&amp; caller_instruction = <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">();</span>
-<span id="L129" class="LineNr">129 </span>  Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>is_base_of_continuation = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L130" class="LineNr">130 </span>  Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>push_front<span class="Delimiter">(</span>call<span class="Delimiter">(</span>Recipe_ordinal[current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name]<span class="Delimiter">));</span>
-<span id="L131" class="LineNr">131 </span>  ingredients<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">());</span>  <span class="Comment">// drop the callee</span>
-<span id="L132" class="LineNr">132 </span>  finish_call_housekeeping<span class="Delimiter">(</span>caller_instruction<span class="Delimiter">,</span> ingredients<span class="Delimiter">);</span>
-<span id="L133" class="LineNr">133 </span>  <span class="Identifier">continue</span><span class="Delimiter">;</span>
-<span id="L134" class="LineNr">134 </span><span class="Delimiter">}</span>
-<span id="L135" class="LineNr">135 </span>
-<span id="L136" class="LineNr">136 </span><span class="Comment">//: save the slice of current call stack until the 'call-with-continuation-mark'</span>
-<span id="L137" class="LineNr">137 </span><span class="Comment">//: call, and return it as the result.</span>
-<span id="L138" class="LineNr">138 </span><span class="Comment">//: todo: implement delimited continuations in Mu's memory</span>
-<span id="L139" class="LineNr">139 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
-<span id="L140" class="LineNr">140 </span>map&lt;<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span><span class="Delimiter">,</span> call_stack&gt; Delimited_continuation<span class="Delimiter">;</span>
-<span id="L141" class="LineNr">141 </span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> Next_delimited_continuation_id = <span class="Constant">1</span><span class="Delimiter">;</span>  <span class="Comment">// 0 is null just like an address</span>
-<span id="L142" class="LineNr">142 </span><span class="Delimiter">:(before &quot;End Reset&quot;)</span>
-<span id="L143" class="LineNr">143 </span>Delimited_continuation<span class="Delimiter">.</span><a href='050scenario.cc.html#L60'>clear</a><span class="Delimiter">();</span>
-<span id="L144" class="LineNr">144 </span>Next_delimited_continuation_id = <span class="Constant">1</span><span class="Delimiter">;</span>
-<span id="L145" class="LineNr">145 </span>
-<span id="L146" class="LineNr">146 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
-<span id="L147" class="LineNr">147 </span>RETURN_CONTINUATION_UNTIL_MARK<span class="Delimiter">,</span>
-<span id="L148" class="LineNr">148 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
-<span id="L149" class="LineNr">149 </span>Recipe_ordinal[<span class="Constant">&quot;return-continuation-until-mark&quot;</span>] = RETURN_CONTINUATION_UNTIL_MARK<span class="Delimiter">;</span>
-<span id="L150" class="LineNr">150 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
-<span id="L151" class="LineNr">151 </span><span class="Normal">case</span> RETURN_CONTINUATION_UNTIL_MARK: <span class="Delimiter">{</span>
-<span id="L152" class="LineNr">152 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L153" class="LineNr">153 </span><span class="Delimiter">}</span>
-<span id="L154" class="LineNr">154 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
-<span id="L155" class="LineNr">155 </span><span class="Normal">case</span> RETURN_CONTINUATION_UNTIL_MARK: <span class="Delimiter">{</span>
-<span id="L156" class="LineNr">156 </span>  <span class="Comment">// first clear any existing ingredients, to isolate the creation of the</span>
-<span id="L157" class="LineNr">157 </span>  <span class="Comment">// continuation from its calls</span>
-<span id="L158" class="LineNr">158 </span>  Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">.</span><a href='050scenario.cc.html#L60'>clear</a><span class="Delimiter">();</span>
-<span id="L159" class="LineNr">159 </span>  Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>next_ingredient_to_process = <span class="Constant">0</span><span class="Delimiter">;</span>
-<span id="L160" class="LineNr">160 </span>  <span class="Comment">// copy the current call stack until the most recent marked call</span>
-<span id="L161" class="LineNr">161 </span>  call_stack::iterator find_base_of_continuation<span class="Delimiter">(</span>call_stack&amp; c<span class="Delimiter">);</span>  <span class="Comment">// manual prototype containing '::'</span>
-<span id="L162" class="LineNr">162 </span>  call_stack::iterator base = find_base_of_continuation<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">);</span>
-<span id="L163" class="LineNr">163 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>base == Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">())</span> <span class="Delimiter">{</span>
-<span id="L164" class="LineNr">164 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;couldn't find a 'call-with-continuation-mark' to return to</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-<span id="L165" class="LineNr">165 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;call stack:</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L166" class="LineNr">166 </span>  <span class="Conceal">¦</span> <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::iterator p = Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span>
-<span id="L167" class="LineNr">167 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;  &quot;</span> &lt;&lt; get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> p<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">).</span>name &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L168" class="LineNr">168 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-<span id="L169" class="LineNr">169 </span>  <span class="Delimiter">}</span>
-<span id="L170" class="LineNr">170 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;creating continuation &quot;</span> &lt;&lt; Next_delimited_continuation_id &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L171" class="LineNr">171 </span>  Delimited_continuation[Next_delimited_continuation_id] = call_stack<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> base<span class="Delimiter">);</span>
-<span id="L172" class="LineNr">172 </span>  <span class="Normal">while</span> <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>begin<span class="Delimiter">()</span> != base<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L173" class="LineNr">173 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L174" class="LineNr">174 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> --Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth<span class="Delimiter">;</span>
-<span id="L175" class="LineNr">175 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &gt;= <span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L176" class="LineNr">176 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L177" class="LineNr">177 </span>  <span class="Conceal">¦</span> Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>pop_front<span class="Delimiter">();</span>
-<span id="L178" class="LineNr">178 </span>  <span class="Delimiter">}</span>
-<span id="L179" class="LineNr">179 </span>  <span class="Comment">// return it as the result of the marked call</span>
-<span id="L180" class="LineNr">180 </span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
-<span id="L181" class="LineNr">181 </span>  products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>Next_delimited_continuation_id<span class="Delimiter">);</span>
-<span id="L182" class="LineNr">182 </span>  <span class="Comment">// return any other ingredients passed in</span>
-<span id="L183" class="LineNr">183 </span>  copy<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> ingredients<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">(),</span> inserter<span class="Delimiter">(</span>products<span class="Delimiter">,</span> products<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">()));</span>
-<span id="L184" class="LineNr">184 </span>  ++Next_delimited_continuation_id<span class="Delimiter">;</span>
-<span id="L185" class="LineNr">185 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// continue to process rest of marked call</span>
-<span id="L186" class="LineNr">186 </span><span class="Delimiter">}</span>
-<span id="L187" class="LineNr">187 </span>
-<span id="L188" class="LineNr">188 </span><span class="Delimiter">:(code)</span>
-<span id="L189" class="LineNr">189 </span>call_stack::iterator find_base_of_continuation<span class="Delimiter">(</span>call_stack&amp; c<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L190" class="LineNr">190 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::iterator p = c<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != c<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
-<span id="L191" class="LineNr">191 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>is_base_of_continuation<span class="Delimiter">)</span> <span class="Identifier">return</span> p<span class="Delimiter">;</span>
-<span id="L192" class="LineNr">192 </span>  <span class="Identifier">return</span> c<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L193" class="LineNr">193 </span><span class="Delimiter">}</span>
-<span id="L194" class="LineNr">194 </span>
-<span id="L195" class="LineNr">195 </span><span class="Comment">//: overload 'call' for continuations</span>
-<span id="L196" class="LineNr">196 </span><span class="Delimiter">:(after &quot;Begin Call&quot;)</span>
-<span id="L197" class="LineNr">197 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>type<span class="Delimiter">-&gt;</span>atom
-<span id="L198" class="LineNr">198 </span>  <span class="Conceal">¦</span> &amp;&amp; <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L199" class="LineNr">199 </span>  <span class="Comment">// copy multiple calls on to current call stack</span>
-<span id="L200" class="LineNr">200 </span>  assert<span class="Delimiter">(</span>scalar<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)));</span>
-<span id="L201" class="LineNr">201 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;calling continuation &quot;</span> &lt;&lt; ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L202" class="LineNr">202 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Delimited_continuation<span class="Delimiter">.</span>find<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> == Delimited_continuation<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">())</span>
-<span id="L203" class="LineNr">203 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;no such delimited continuation &quot;</span> &lt;&lt; <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L204" class="LineNr">204 </span>  <span class="Normal">const</span> call_stack&amp; new_calls = Delimited_continuation[ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>]<span class="Delimiter">;</span>
-<span id="L205" class="LineNr">205 </span>  <span class="Normal">const</span> call&amp; caller = <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>new_calls<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> ? *++new_calls<span class="Delimiter">.</span>begin<span class="Delimiter">()</span> : Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">();</span>
-<span id="L206" class="LineNr">206 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::const_reverse_iterator p = new_calls<span class="Delimiter">.</span>rbegin<span class="Delimiter">();</span> p != new_calls<span class="Delimiter">.</span>rend<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L207" class="LineNr">207 </span>  <span class="Conceal">¦</span> Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>push_front<span class="Delimiter">(</span>*p<span class="Delimiter">);</span>
-<span id="L208" class="LineNr">208 </span>  <span class="Conceal">¦</span> <span class="Comment">// ensure that the presence of a continuation keeps its stack frames from being reclaimed</span>
-<span id="L209" class="LineNr">209 </span>  <span class="Conceal">¦</span> <span class="Normal">int</span> space_address = Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>default_space<span class="Delimiter">;</span>
-<span id="L210" class="LineNr">210 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>space_address != <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L211" class="LineNr">211 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">int</span> refcount = <a href='001help.cc.html#L228'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> space_address<span class="Delimiter">);</span>
-<span id="L212" class="LineNr">212 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;incrementing refcount of &quot;</span> &lt;&lt; space_address &lt;&lt; <span class="Constant">&quot;: &quot;</span> &lt;&lt; refcount &lt;&lt; <span class="Constant">&quot; -&gt; &quot;</span> &lt;&lt; refcount+<span class="Constant">1</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L213" class="LineNr">213 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> space_address<span class="Delimiter">,</span> refcount+<span class="Constant">1</span><span class="Delimiter">);</span>
-<span id="L214" class="LineNr">214 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
-<span id="L215" class="LineNr">215 </span>  <span class="Delimiter">}</span>
-<span id="L216" class="LineNr">216 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L217" class="LineNr">217 </span>  <span class="Conceal">¦</span> Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth += <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>new_calls<span class="Delimiter">);</span>
-<span id="L218" class="LineNr">218 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;trace&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;calling delimited continuation; growing callstack depth to &quot;</span> &lt;&lt; Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L219" class="LineNr">219 </span>  <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &lt; <span class="Constant">9000</span><span class="Delimiter">);</span>  <span class="Comment">// 9998-101 plus cushion</span>
-<span id="L220" class="LineNr">220 </span>  <span class="Delimiter">}</span>
-<span id="L221" class="LineNr">221 </span>  ++current_step_index<span class="Delimiter">();</span>  <span class="Comment">// skip past the return-continuation-until-mark</span>
-<span id="L222" class="LineNr">222 </span>  ingredients<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">());</span>  <span class="Comment">// drop the callee</span>
-<span id="L223" class="LineNr">223 </span>  finish_call_housekeeping<span class="Delimiter">(</span><a href='026call.cc.html#L86'>to_instruction</a><span class="Delimiter">(</span>caller<span class="Delimiter">),</span> ingredients<span class="Delimiter">);</span>
-<span id="L224" class="LineNr">224 </span>  <span class="Identifier">continue</span><span class="Delimiter">;</span>
-<span id="L225" class="LineNr">225 </span><span class="Delimiter">}</span>
-<span id="L226" class="LineNr">226 </span>
-<span id="L227" class="LineNr">227 </span><span class="Comment">//: Ensure that the presence of a continuation keeps its stack frames from being reclaimed.</span>
-<span id="L228" class="LineNr">228 </span>
-<span id="L229" class="LineNr">229 </span><span class="Delimiter">:(scenario continuations_preserve_local_scopes)</span>
-<span id="L230" class="LineNr">230 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L231" class="LineNr">231 </span>  local-scope
-<span id="L232" class="LineNr">232 </span>  <span class="Normal">k</span>:continuation<span class="Special"> &lt;- </span>call-with-continuation-mark f
-<span id="L233" class="LineNr">233 </span>  call k
-<span id="L234" class="LineNr">234 </span>  <span class="Identifier">return</span> <span class="Constant">34</span>
-<span id="L235" class="LineNr">235 </span>]
-<span id="L236" class="LineNr">236 </span><span class="muRecipe">def</span> f [
-<span id="L237" class="LineNr">237 </span>  local-scope
-<span id="L238" class="LineNr">238 </span>  g
-<span id="L239" class="LineNr">239 </span>]
-<span id="L240" class="LineNr">240 </span><span class="muRecipe">def</span> g [
-<span id="L241" class="LineNr">241 </span>  local-scope
-<span id="L242" class="LineNr">242 </span>  <span class="Identifier">return</span>-continuation-until-mark
-<span id="L243" class="LineNr">243 </span>  add <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">1</span>
-<span id="L244" class="LineNr">244 </span>]
-<span id="L245" class="LineNr">245 </span><span class="Comment"># entering main</span>
-<span id="L246" class="LineNr">246 </span><span class="traceContains">+mem: new alloc: 1000</span>
-<span id="L247" class="LineNr">247 </span><span class="traceContains">+run: {k: &quot;continuation&quot;} &lt;- call-with-continuation-mark {f: &quot;recipe-literal&quot;}</span>
-<span id="L248" class="LineNr">248 </span><span class="Comment"># entering f</span>
-<span id="L249" class="LineNr">249 </span><span class="traceContains">+mem: new alloc: 1004</span>
-<span id="L250" class="LineNr">250 </span><span class="Comment"># entering g</span>
-<span id="L251" class="LineNr">251 </span><span class="traceContains">+mem: new alloc: 1007</span>
-<span id="L252" class="LineNr">252 </span><span class="Comment"># return control to main</span>
-<span id="L253" class="LineNr">253 </span><span class="traceContains">+run: return-continuation-until-mark</span>
-<span id="L254" class="LineNr">254 </span><span class="Comment"># no allocs abandoned yet</span>
-<span id="L255" class="LineNr">255 </span><span class="Comment"># finish running main</span>
-<span id="L256" class="LineNr">256 </span><span class="traceContains">+run: call {k: &quot;continuation&quot;}</span>
-<span id="L257" class="LineNr">257 </span><span class="traceContains">+run: add {1: &quot;literal&quot;}, {1: &quot;literal&quot;}</span>
-<span id="L258" class="LineNr">258 </span><span class="traceContains">+run: return {34: &quot;literal&quot;}</span>
-<span id="L259" class="LineNr">259 </span><span class="Comment"># now k is reclaimed</span>
-<span id="L260" class="LineNr">260 </span><span class="traceContains">+mem: trying to reclaim local k:continuation</span>
-<span id="L261" class="LineNr">261 </span><span class="Comment"># at this point all allocs in the continuation are abandoned</span>
-<span id="L262" class="LineNr">262 </span><span class="traceContains">+mem: automatically abandoning 1007</span>
-<span id="L263" class="LineNr">263 </span><span class="traceContains">+mem: automatically abandoning 1004</span>
-<span id="L264" class="LineNr">264 </span><span class="Comment"># finally the alloc for main is abandoned</span>
-<span id="L265" class="LineNr">265 </span><span class="traceContains">+mem: automatically abandoning 1000</span>
-<span id="L266" class="LineNr">266 </span>
-<span id="L267" class="LineNr">267 </span><span class="Delimiter">:(after &quot;Begin Decrement Refcounts(canonized_x)&quot;)</span>
-<span id="L268" class="LineNr">268 </span><span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_continuation<span class="Delimiter">(</span>canonized_x<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L269" class="LineNr">269 </span>  <span class="Normal">int</span> continuation_id = <a href='001help.cc.html#L228'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> canonized_x<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
-<span id="L270" class="LineNr">270 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;reclaiming continuation &quot;</span> &lt;&lt; continuation_id &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
-<span id="L271" class="LineNr">271 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>continuation_id == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L272" class="LineNr">272 </span>  <span class="Normal">const</span> call_stack&amp; continuation_calls = get<span class="Delimiter">(</span>Delimited_continuation<span class="Delimiter">,</span> continuation_id<span class="Delimiter">);</span>
-<span id="L273" class="LineNr">273 </span>  <span class="Comment">// temporarily push the stack frames for the continuation one last time on to the call stack</span>
-<span id="L274" class="LineNr">274 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::const_reverse_iterator p = continuation_calls<span class="Delimiter">.</span>rbegin<span class="Delimiter">();</span> p != continuation_calls<span class="Delimiter">.</span>rend<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
-<span id="L275" class="LineNr">275 </span>  <span class="Conceal">¦</span> Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>push_front<span class="Delimiter">(</span>*p<span class="Delimiter">);</span>
-<span id="L276" class="LineNr">276 </span>  <span class="Comment">// reclaim their spaces while popping them</span>
-<span id="L277" class="LineNr">277 </span>  <span class="Comment">// (because reclaim_default_space() relies on the default-space being reclaimed being at the top of the stack)</span>
-<span id="L278" class="LineNr">278 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::const_iterator p = continuation_calls<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != continuation_calls<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L279" class="LineNr">279 </span>  <span class="Conceal">¦</span> <a href='043space.cc.html#L244'>reclaim_default_space</a><span class="Delimiter">();</span>
-<span id="L280" class="LineNr">280 </span>  <span class="Conceal">¦</span> Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>pop_front<span class="Delimiter">();</span>
-<span id="L281" class="LineNr">281 </span>  <span class="Delimiter">}</span>
-<span id="L282" class="LineNr">282 </span>  <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L283" class="LineNr">283 </span><span class="Delimiter">}</span>
-<span id="L284" class="LineNr">284 </span>
-<span id="L285" class="LineNr">285 </span><span class="Delimiter">:(code)</span>
-<span id="L286" class="LineNr">286 </span><span class="Normal">bool</span> is_mu_continuation<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L287" class="LineNr">287 </span>  canonize_type<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
-<span id="L288" class="LineNr">288 </span>  <span class="Identifier">return</span> x<span class="Delimiter">.</span>type &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">);</span>
-<span id="L289" class="LineNr">289 </span><span class="Delimiter">}</span>
-<span id="L290" class="LineNr">290 </span>
-<span id="L291" class="LineNr">291 </span><span class="Delimiter">:(scenario continuations_can_return_values)</span>
-<span id="L292" class="LineNr">292 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L293" class="LineNr">293 </span>  local-scope
-<span id="L294" class="LineNr">294 </span>  <span class="Normal">k</span>:continuation<span class="Delimiter">,</span> <span class="Constant">1</span>:num/<span class="Special">raw &lt;- </span>call-with-continuation-mark f
-<span id="L295" class="LineNr">295 </span>]
-<span id="L296" class="LineNr">296 </span><span class="muRecipe">def</span> f [
-<span id="L297" class="LineNr">297 </span>  local-scope
-<span id="L298" class="LineNr">298 </span>  g
-<span id="L299" class="LineNr">299 </span>]
-<span id="L300" class="LineNr">300 </span><span class="muRecipe">def</span> g [
-<span id="L301" class="LineNr">301 </span>  local-scope
-<span id="L302" class="LineNr">302 </span>  <span class="Identifier">return</span>-continuation-until-mark <span class="Constant">34</span>
-<span id="L303" class="LineNr">303 </span>  stash [continuation called]
-<span id="L304" class="LineNr">304 </span>]
-<span id="L305" class="LineNr">305 </span><span class="Comment"># entering main</span>
-<span id="L306" class="LineNr">306 </span><span class="traceContains">+mem: new alloc: 1000</span>
-<span id="L307" class="LineNr">307 </span><span class="traceContains">+run: {k: &quot;continuation&quot;}, {1: &quot;number&quot;, &quot;raw&quot;: ()} &lt;- call-with-continuation-mark {f: &quot;recipe-literal&quot;}</span>
-<span id="L308" class="LineNr">308 </span><span class="Comment"># entering f</span>
-<span id="L309" class="LineNr">309 </span><span class="traceContains">+mem: new alloc: 1004</span>
-<span id="L310" class="LineNr">310 </span><span class="Comment"># entering g</span>
-<span id="L311" class="LineNr">311 </span><span class="traceContains">+mem: new alloc: 1007</span>
-<span id="L312" class="LineNr">312 </span><span class="Comment"># return control to main</span>
-<span id="L313" class="LineNr">313 </span><span class="traceContains">+run: return-continuation-until-mark {34: &quot;literal&quot;}</span>
-<span id="L314" class="LineNr">314 </span><span class="Comment"># no allocs abandoned yet</span>
-<span id="L315" class="LineNr">315 </span><span class="traceContains">+mem: storing 34 in location 1</span>
-<span id="L316" class="LineNr">316 </span><span class="Comment"># end of main</span>
-<span id="L317" class="LineNr">317 </span><span class="Comment"># make sure no memory leaks..</span>
-<span id="L318" class="LineNr">318 </span><span class="traceContains">+mem: trying to reclaim local k:continuation</span>
-<span id="L319" class="LineNr">319 </span><span class="traceContains">+mem: automatically abandoning 1007</span>
-<span id="L320" class="LineNr">320 </span><span class="traceContains">+mem: automatically abandoning 1004</span>
-<span id="L321" class="LineNr">321 </span><span class="traceContains">+mem: automatically abandoning 1000</span>
-<span id="L322" class="LineNr">322 </span><span class="Comment"># ..even though we never called the continuation</span>
-<span id="L323" class="LineNr">323 </span><span class="traceAbsent">-app: continuation called</span>
+<span id="L95" class="LineNr"> 95 </span><span class="traceContains">+mem: storing 6 in location 22</span>
+<span id="L96" class="LineNr"> 96 </span><span class="traceContains">+mem: storing 7 in location 2</span>
+<span id="L97" class="LineNr"> 97 </span><span class="traceContains">+run: {2: &quot;number&quot;} &lt;- call {1: &quot;continuation&quot;}, {2: &quot;number&quot;}</span>
+<span id="L98" class="LineNr"> 98 </span><span class="traceContains">+mem: storing 7 in location 22</span>
+<span id="L99" class="LineNr"> 99 </span><span class="traceContains">+mem: storing 8 in location 2</span>
+<span id="L100" class="LineNr">100 </span><span class="Comment"># first call of 'g' does not execute the part after return-continuation-until-mark</span>
+<span id="L101" class="LineNr">101 </span><span class="traceAbsent">-mem: storing 77 in location 22</span>
+<span id="L102" class="LineNr">102 </span><span class="Comment"># calls of the continuation don't execute the part before return-continuation-until-mark</span>
+<span id="L103" class="LineNr">103 </span><span class="traceAbsent">-mem: storing 5 in location 21</span>
+<span id="L104" class="LineNr">104 </span><span class="traceAbsent">-mem: storing 6 in location 21</span>
+<span id="L105" class="LineNr">105 </span><span class="traceAbsent">-mem: storing 7 in location 21</span>
+<span id="L106" class="LineNr">106 </span><span class="Comment"># termination</span>
+<span id="L107" class="LineNr">107 </span><span class="traceAbsent">-mem: storing 9 in location 2</span>
+<span id="L108" class="LineNr">108 </span>
+<span id="L109" class="LineNr">109 </span><span class="Delimiter">:(before &quot;End call Fields&quot;)</span>
+<span id="L110" class="LineNr">110 </span><span class="Normal">bool</span> is_base_of_continuation<span class="Delimiter">;</span>
+<span id="L111" class="LineNr">111 </span><span class="Delimiter">:(before &quot;End call Constructor&quot;)</span>
+<span id="L112" class="LineNr">112 </span>is_base_of_continuation = <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L113" class="LineNr">113 </span>
+<span id="L114" class="LineNr">114 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+<span id="L115" class="LineNr">115 </span>CALL_WITH_CONTINUATION_MARK<span class="Delimiter">,</span>
+<span id="L116" class="LineNr">116 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+<span id="L117" class="LineNr">117 </span>Recipe_ordinal[<span class="Constant">&quot;call-with-continuation-mark&quot;</span>] = CALL_WITH_CONTINUATION_MARK<span class="Delimiter">;</span>
+<span id="L118" class="LineNr">118 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+<span id="L119" class="LineNr">119 </span><span class="Normal">case</span> CALL_WITH_CONTINUATION_MARK: <span class="Delimiter">{</span>
+<span id="L120" class="LineNr">120 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L121" class="LineNr">121 </span><span class="Delimiter">}</span>
+<span id="L122" class="LineNr">122 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+<span id="L123" class="LineNr">123 </span><span class="Normal">case</span> CALL_WITH_CONTINUATION_MARK: <span class="Delimiter">{</span>
+<span id="L124" class="LineNr">124 </span>  <span class="Comment">// like call, but mark the current call as a 'base of continuation' call</span>
+<span id="L125" class="LineNr">125 </span>  <span class="Comment">// before pushing the next one on it</span>
+<span id="L126" class="LineNr">126 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L127" class="LineNr">127 </span>  <span class="Conceal">¦</span> ++Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth<span class="Delimiter">;</span>
+<span id="L128" class="LineNr">128 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;trace&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;delimited continuation; incrementing callstack depth to &quot;</span> &lt;&lt; Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L129" class="LineNr">129 </span>  <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &lt; <span class="Constant">9000</span><span class="Delimiter">);</span>  <span class="Comment">// 9998-101 plus cushion</span>
+<span id="L130" class="LineNr">130 </span>  <span class="Delimiter">}</span>
+<span id="L131" class="LineNr">131 </span>  <span class="Normal">const</span> instruction&amp; caller_instruction = <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">();</span>
+<span id="L132" class="LineNr">132 </span>  Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>is_base_of_continuation = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L133" class="LineNr">133 </span>  Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>push_front<span class="Delimiter">(</span>call<span class="Delimiter">(</span>Recipe_ordinal[current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name]<span class="Delimiter">));</span>
+<span id="L134" class="LineNr">134 </span>  ingredients<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">());</span>  <span class="Comment">// drop the callee</span>
+<span id="L135" class="LineNr">135 </span>  finish_call_housekeeping<span class="Delimiter">(</span>caller_instruction<span class="Delimiter">,</span> ingredients<span class="Delimiter">);</span>
+<span id="L136" class="LineNr">136 </span>  <span class="Identifier">continue</span><span class="Delimiter">;</span>
+<span id="L137" class="LineNr">137 </span><span class="Delimiter">}</span>
+<span id="L138" class="LineNr">138 </span>
+<span id="L139" class="LineNr">139 </span><span class="Comment">//: save the slice of current call stack until the 'call-with-continuation-mark'</span>
+<span id="L140" class="LineNr">140 </span><span class="Comment">//: call, and return it as the result.</span>
+<span id="L141" class="LineNr">141 </span><span class="Comment">//: todo: implement delimited continuations in Mu's memory</span>
+<span id="L142" class="LineNr">142 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
+<span id="L143" class="LineNr">143 </span>map&lt;<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span><span class="Delimiter">,</span> call_stack&gt; Delimited_continuation<span class="Delimiter">;</span>
+<span id="L144" class="LineNr">144 </span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> Next_delimited_continuation_id = <span class="Constant">1</span><span class="Delimiter">;</span>  <span class="Comment">// 0 is null just like an address</span>
+<span id="L145" class="LineNr">145 </span><span class="Delimiter">:(before &quot;End Reset&quot;)</span>
+<span id="L146" class="LineNr">146 </span>Delimited_continuation<span class="Delimiter">.</span><a href='050scenario.cc.html#L60'>clear</a><span class="Delimiter">();</span>
+<span id="L147" class="LineNr">147 </span>Next_delimited_continuation_id = <span class="Constant">1</span><span class="Delimiter">;</span>
+<span id="L148" class="LineNr">148 </span>
+<span id="L149" class="LineNr">149 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+<span id="L150" class="LineNr">150 </span>RETURN_CONTINUATION_UNTIL_MARK<span class="Delimiter">,</span>
+<span id="L151" class="LineNr">151 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+<span id="L152" class="LineNr">152 </span>Recipe_ordinal[<span class="Constant">&quot;return-continuation-until-mark&quot;</span>] = RETURN_CONTINUATION_UNTIL_MARK<span class="Delimiter">;</span>
+<span id="L153" class="LineNr">153 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+<span id="L154" class="LineNr">154 </span><span class="Normal">case</span> RETURN_CONTINUATION_UNTIL_MARK: <span class="Delimiter">{</span>
+<span id="L155" class="LineNr">155 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L156" class="LineNr">156 </span><span class="Delimiter">}</span>
+<span id="L157" class="LineNr">157 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+<span id="L158" class="LineNr">158 </span><span class="Normal">case</span> RETURN_CONTINUATION_UNTIL_MARK: <span class="Delimiter">{</span>
+<span id="L159" class="LineNr">159 </span>  <span class="Comment">// first clear any existing ingredients, to isolate the creation of the</span>
+<span id="L160" class="LineNr">160 </span>  <span class="Comment">// continuation from its calls</span>
+<span id="L161" class="LineNr">161 </span>  Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">.</span><a href='050scenario.cc.html#L60'>clear</a><span class="Delimiter">();</span>
+<span id="L162" class="LineNr">162 </span>  Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>next_ingredient_to_process = <span class="Constant">0</span><span class="Delimiter">;</span>
+<span id="L163" class="LineNr">163 </span>  <span class="Comment">// copy the current call stack until the most recent marked call</span>
+<span id="L164" class="LineNr">164 </span>  call_stack::iterator find_base_of_continuation<span class="Delimiter">(</span>call_stack&amp; c<span class="Delimiter">);</span>  <span class="Comment">// manual prototype containing '::'</span>
+<span id="L165" class="LineNr">165 </span>  call_stack::iterator base = find_base_of_continuation<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">);</span>
+<span id="L166" class="LineNr">166 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>base == Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">())</span> <span class="Delimiter">{</span>
+<span id="L167" class="LineNr">167 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;couldn't find a 'call-with-continuation-mark' to return to</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+<span id="L168" class="LineNr">168 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;call stack:</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L169" class="LineNr">169 </span>  <span class="Conceal">¦</span> <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::iterator p = Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span>
+<span id="L170" class="LineNr">170 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;  &quot;</span> &lt;&lt; get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> p<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">).</span>name &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L171" class="LineNr">171 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L172" class="LineNr">172 </span>  <span class="Delimiter">}</span>
+<span id="L173" class="LineNr">173 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;creating continuation &quot;</span> &lt;&lt; Next_delimited_continuation_id &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L174" class="LineNr">174 </span>  Delimited_continuation[Next_delimited_continuation_id] = call_stack<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> base<span class="Delimiter">);</span>
+<span id="L175" class="LineNr">175 </span>  <span class="Normal">while</span> <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>begin<span class="Delimiter">()</span> != base<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L176" class="LineNr">176 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L177" class="LineNr">177 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> --Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth<span class="Delimiter">;</span>
+<span id="L178" class="LineNr">178 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &gt;= <span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L179" class="LineNr">179 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L180" class="LineNr">180 </span>  <span class="Conceal">¦</span> Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>pop_front<span class="Delimiter">();</span>
+<span id="L181" class="LineNr">181 </span>  <span class="Delimiter">}</span>
+<span id="L182" class="LineNr">182 </span>  <span class="Comment">// return it as the result of the marked call</span>
+<span id="L183" class="LineNr">183 </span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
+<span id="L184" class="LineNr">184 </span>  products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>Next_delimited_continuation_id<span class="Delimiter">);</span>
+<span id="L185" class="LineNr">185 </span>  <span class="Comment">// return any other ingredients passed in</span>
+<span id="L186" class="LineNr">186 </span>  copy<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> ingredients<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">(),</span> inserter<span class="Delimiter">(</span>products<span class="Delimiter">,</span> products<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">()));</span>
+<span id="L187" class="LineNr">187 </span>  ++Next_delimited_continuation_id<span class="Delimiter">;</span>
+<span id="L188" class="LineNr">188 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// continue to process rest of marked call</span>
+<span id="L189" class="LineNr">189 </span><span class="Delimiter">}</span>
+<span id="L190" class="LineNr">190 </span>
+<span id="L191" class="LineNr">191 </span><span class="Delimiter">:(code)</span>
+<span id="L192" class="LineNr">192 </span>call_stack::iterator find_base_of_continuation<span class="Delimiter">(</span>call_stack&amp; c<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L193" class="LineNr">193 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::iterator p = c<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != c<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
+<span id="L194" class="LineNr">194 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>is_base_of_continuation<span class="Delimiter">)</span> <span class="Identifier">return</span> p<span class="Delimiter">;</span>
+<span id="L195" class="LineNr">195 </span>  <span class="Identifier">return</span> c<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L196" class="LineNr">196 </span><span class="Delimiter">}</span>
+<span id="L197" class="LineNr">197 </span>
+<span id="L198" class="LineNr">198 </span><span class="Comment">//: overload 'call' for continuations</span>
+<span id="L199" class="LineNr">199 </span><span class="Delimiter">:(after &quot;Begin Call&quot;)</span>
+<span id="L200" class="LineNr">200 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>type<span class="Delimiter">-&gt;</span>atom
+<span id="L201" class="LineNr">201 </span>  <span class="Conceal">¦</span> &amp;&amp; <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L202" class="LineNr">202 </span>  <span class="Comment">// copy multiple calls on to current call stack</span>
+<span id="L203" class="LineNr">203 </span>  assert<span class="Delimiter">(</span>scalar<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)));</span>
+<span id="L204" class="LineNr">204 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;calling continuation &quot;</span> &lt;&lt; ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L205" class="LineNr">205 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Delimited_continuation<span class="Delimiter">.</span>find<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> == Delimited_continuation<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">())</span>
+<span id="L206" class="LineNr">206 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L168'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L85'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;no such delimited continuation &quot;</span> &lt;&lt; <a href='026call.cc.html#L87'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L207" class="LineNr">207 </span>  <span class="Normal">const</span> call_stack&amp; new_calls = Delimited_continuation[ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>]<span class="Delimiter">;</span>
+<span id="L208" class="LineNr">208 </span>  <span class="Normal">const</span> call&amp; caller = <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>new_calls<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> ? *++new_calls<span class="Delimiter">.</span>begin<span class="Delimiter">()</span> : Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">();</span>
+<span id="L209" class="LineNr">209 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::const_reverse_iterator p = new_calls<span class="Delimiter">.</span>rbegin<span class="Delimiter">();</span> p != new_calls<span class="Delimiter">.</span>rend<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L210" class="LineNr">210 </span>  <span class="Conceal">¦</span> Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>push_front<span class="Delimiter">(</span>*p<span class="Delimiter">);</span>
+<span id="L211" class="LineNr">211 </span>  <span class="Conceal">¦</span> <span class="Comment">// ensure that the presence of a continuation keeps its stack frames from being reclaimed</span>
+<span id="L212" class="LineNr">212 </span>  <span class="Conceal">¦</span> <span class="Normal">int</span> space_address = Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>default_space<span class="Delimiter">;</span>
+<span id="L213" class="LineNr">213 </span>  <span class="Conceal">¦</span> <span class="Normal">if</span> <span class="Delimiter">(</span>space_address != <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L214" class="LineNr">214 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">int</span> refcount = <a href='001help.cc.html#L228'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> space_address<span class="Delimiter">);</span>
+<span id="L215" class="LineNr">215 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;incrementing refcount of &quot;</span> &lt;&lt; space_address &lt;&lt; <span class="Constant">&quot;: &quot;</span> &lt;&lt; refcount &lt;&lt; <span class="Constant">&quot; -&gt; &quot;</span> &lt;&lt; refcount+<span class="Constant">1</span> &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L216" class="LineNr">216 </span>  <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> space_address<span class="Delimiter">,</span> refcount+<span class="Constant">1</span><span class="Delimiter">);</span>
+<span id="L217" class="LineNr">217 </span>  <span class="Conceal">¦</span> <span class="Delimiter">}</span>
+<span id="L218" class="LineNr">218 </span>  <span class="Delimiter">}</span>
+<span id="L219" class="LineNr">219 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L220" class="LineNr">220 </span>  <span class="Conceal">¦</span> Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth += <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>new_calls<span class="Delimiter">);</span>
+<span id="L221" class="LineNr">221 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;trace&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;calling delimited continuation; growing callstack depth to &quot;</span> &lt;&lt; Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L222" class="LineNr">222 </span>  <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>callstack_depth &lt; <span class="Constant">9000</span><span class="Delimiter">);</span>  <span class="Comment">// 9998-101 plus cushion</span>
+<span id="L223" class="LineNr">223 </span>  <span class="Delimiter">}</span>
+<span id="L224" class="LineNr">224 </span>  ingredients<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">());</span>  <span class="Comment">// drop the callee</span>
+<span id="L225" class="LineNr">225 </span>  finish_call_housekeeping<span class="Delimiter">(</span><a href='026call.cc.html#L86'>to_instruction</a><span class="Delimiter">(</span>caller<span class="Delimiter">),</span> ingredients<span class="Delimiter">);</span>
+<span id="L226" class="LineNr">226 </span>  copy<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> ingredients<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">(),</span> inserter<span class="Delimiter">(</span>products<span class="Delimiter">,</span> products<span class="Delimiter">.</span>begin<span class="Delimiter">()));</span>
+<span id="L227" class="LineNr">227 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// record results of resuming 'return-continuation-until-mark' instruction</span>
+<span id="L228" class="LineNr">228 </span><span class="Delimiter">}</span>
+<span id="L229" class="LineNr">229 </span>
+<span id="L230" class="LineNr">230 </span><span class="Comment">//: Ensure that the presence of a continuation keeps its stack frames from being reclaimed.</span>
+<span id="L231" class="LineNr">231 </span>
+<span id="L232" class="LineNr">232 </span><span class="Delimiter">:(scenario continuations_preserve_local_scopes)</span>
+<span id="L233" class="LineNr">233 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L234" class="LineNr">234 </span>  local-scope
+<span id="L235" class="LineNr">235 </span>  <span class="Normal">k</span>:continuation<span class="Special"> &lt;- </span>call-with-continuation-mark f
+<span id="L236" class="LineNr">236 </span>  call k
+<span id="L237" class="LineNr">237 </span>  <span class="Identifier">return</span> <span class="Constant">34</span>
+<span id="L238" class="LineNr">238 </span>]
+<span id="L239" class="LineNr">239 </span><span class="muRecipe">def</span> f [
+<span id="L240" class="LineNr">240 </span>  local-scope
+<span id="L241" class="LineNr">241 </span>  g
+<span id="L242" class="LineNr">242 </span>]
+<span id="L243" class="LineNr">243 </span><span class="muRecipe">def</span> g [
+<span id="L244" class="LineNr">244 </span>  local-scope
+<span id="L245" class="LineNr">245 </span>  <span class="Identifier">return</span>-continuation-until-mark
+<span id="L246" class="LineNr">246 </span>  add <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">1</span>
+<span id="L247" class="LineNr">247 </span>]
+<span id="L248" class="LineNr">248 </span><span class="Comment"># entering main</span>
+<span id="L249" class="LineNr">249 </span><span class="traceContains">+mem: new alloc: 1000</span>
+<span id="L250" class="LineNr">250 </span><span class="traceContains">+run: {k: &quot;continuation&quot;} &lt;- call-with-continuation-mark {f: &quot;recipe-literal&quot;}</span>
+<span id="L251" class="LineNr">251 </span><span class="Comment"># entering f</span>
+<span id="L252" class="LineNr">252 </span><span class="traceContains">+mem: new alloc: 1004</span>
+<span id="L253" class="LineNr">253 </span><span class="Comment"># entering g</span>
+<span id="L254" class="LineNr">254 </span><span class="traceContains">+mem: new alloc: 1007</span>
+<span id="L255" class="LineNr">255 </span><span class="Comment"># return control to main</span>
+<span id="L256" class="LineNr">256 </span><span class="traceContains">+run: return-continuation-until-mark</span>
+<span id="L257" class="LineNr">257 </span><span class="Comment"># no allocs abandoned yet</span>
+<span id="L258" class="LineNr">258 </span><span class="Comment"># finish running main</span>
+<span id="L259" class="LineNr">259 </span><span class="traceContains">+run: call {k: &quot;continuation&quot;}</span>
+<span id="L260" class="LineNr">260 </span><span class="traceContains">+run: add {1: &quot;literal&quot;}, {1: &quot;literal&quot;}</span>
+<span id="L261" class="LineNr">261 </span><span class="traceContains">+run: return {34: &quot;literal&quot;}</span>
+<span id="L262" class="LineNr">262 </span><span class="Comment"># now k is reclaimed</span>
+<span id="L263" class="LineNr">263 </span><span class="traceContains">+mem: trying to reclaim local k:continuation</span>
+<span id="L264" class="LineNr">264 </span><span class="Comment"># at this point all allocs in the continuation are abandoned</span>
+<span id="L265" class="LineNr">265 </span><span class="traceContains">+mem: automatically abandoning 1007</span>
+<span id="L266" class="LineNr">266 </span><span class="traceContains">+mem: automatically abandoning 1004</span>
+<span id="L267" class="LineNr">267 </span><span class="Comment"># finally the alloc for main is abandoned</span>
+<span id="L268" class="LineNr">268 </span><span class="traceContains">+mem: automatically abandoning 1000</span>
+<span id="L269" class="LineNr">269 </span>
+<span id="L270" class="LineNr">270 </span><span class="Delimiter">:(after &quot;Begin Decrement Refcounts(canonized_x)&quot;)</span>
+<span id="L271" class="LineNr">271 </span><span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_continuation<span class="Delimiter">(</span>canonized_x<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L272" class="LineNr">272 </span>  <span class="Normal">int</span> continuation_id = <a href='001help.cc.html#L228'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> canonized_x<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
+<span id="L273" class="LineNr">273 </span>  <a href='003trace.cc.html#L161'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;reclaiming continuation &quot;</span> &lt;&lt; continuation_id &lt;&lt; <a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span>
+<span id="L274" class="LineNr">274 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>continuation_id == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L275" class="LineNr">275 </span>  <span class="Normal">const</span> call_stack&amp; continuation_calls = get<span class="Delimiter">(</span>Delimited_continuation<span class="Delimiter">,</span> continuation_id<span class="Delimiter">);</span>
+<span id="L276" class="LineNr">276 </span>  <span class="Comment">// temporarily push the stack frames for the continuation one last time on to the call stack</span>
+<span id="L277" class="LineNr">277 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::const_reverse_iterator p = continuation_calls<span class="Delimiter">.</span>rbegin<span class="Delimiter">();</span> p != continuation_calls<span class="Delimiter">.</span>rend<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
+<span id="L278" class="LineNr">278 </span>  <span class="Conceal">¦</span> Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>push_front<span class="Delimiter">(</span>*p<span class="Delimiter">);</span>
+<span id="L279" class="LineNr">279 </span>  <span class="Comment">// reclaim their spaces while popping them</span>
+<span id="L280" class="LineNr">280 </span>  <span class="Comment">// (because reclaim_default_space() relies on the default-space being reclaimed being at the top of the stack)</span>
+<span id="L281" class="LineNr">281 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>call_stack::const_iterator p = continuation_calls<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != continuation_calls<span class="Delimiter">.</span><a href='003trace.cc.html#L197'>end</a><span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L282" class="LineNr">282 </span>  <span class="Conceal">¦</span> <a href='043space.cc.html#L244'>reclaim_default_space</a><span class="Delimiter">();</span>
+<span id="L283" class="LineNr">283 </span>  <span class="Conceal">¦</span> Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>pop_front<span class="Delimiter">();</span>
+<span id="L284" class="LineNr">284 </span>  <span class="Delimiter">}</span>
+<span id="L285" class="LineNr">285 </span>  <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L286" class="LineNr">286 </span><span class="Delimiter">}</span>
+<span id="L287" class="LineNr">287 </span>
+<span id="L288" class="LineNr">288 </span><span class="Delimiter">:(code)</span>
+<span id="L289" class="LineNr">289 </span><span class="Normal">bool</span> is_mu_continuation<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L290" class="LineNr">290 </span>  canonize_type<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
+<span id="L291" class="LineNr">291 </span>  <span class="Identifier">return</span> x<span class="Delimiter">.</span>type &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;continuation&quot;</span><span class="Delimiter">);</span>
+<span id="L292" class="LineNr">292 </span><span class="Delimiter">}</span>
+<span id="L293" class="LineNr">293 </span>
+<span id="L294" class="LineNr">294 </span><span class="Delimiter">:(scenario continuations_can_return_values)</span>
+<span id="L295" class="LineNr">295 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L296" class="LineNr">296 </span>  local-scope
+<span id="L297" class="LineNr">297 </span>  <span class="Normal">k</span>:continuation<span class="Delimiter">,</span> <span class="Constant">1</span>:num/<span class="Special">raw &lt;- </span>call-with-continuation-mark f
+<span id="L298" class="LineNr">298 </span>]
+<span id="L299" class="LineNr">299 </span><span class="muRecipe">def</span> f [
+<span id="L300" class="LineNr">300 </span>  local-scope
+<span id="L301" class="LineNr">301 </span>  g
+<span id="L302" class="LineNr">302 </span>]
+<span id="L303" class="LineNr">303 </span><span class="muRecipe">def</span> g [
+<span id="L304" class="LineNr">304 </span>  local-scope
+<span id="L305" class="LineNr">305 </span>  <span class="Identifier">return</span>-continuation-until-mark <span class="Constant">34</span>
+<span id="L306" class="LineNr">306 </span>  stash [continuation called]
+<span id="L307" class="LineNr">307 </span>]
+<span id="L308" class="LineNr">308 </span><span class="Comment"># entering main</span>
+<span id="L309" class="LineNr">309 </span><span class="traceContains">+mem: new alloc: 1000</span>
+<span id="L310" class="LineNr">310 </span><span class="traceContains">+run: {k: &quot;continuation&quot;}, {1: &quot;number&quot;, &quot;raw&quot;: ()} &lt;- call-with-continuation-mark {f: &quot;recipe-literal&quot;}</span>
+<span id="L311" class="LineNr">311 </span><span class="Comment"># entering f</span>
+<span id="L312" class="LineNr">312 </span><span class="traceContains">+mem: new alloc: 1004</span>
+<span id="L313" class="LineNr">313 </span><span class="Comment"># entering g</span>
+<span id="L314" class="LineNr">314 </span><span class="traceContains">+mem: new alloc: 1007</span>
+<span id="L315" class="LineNr">315 </span><span class="Comment"># return control to main</span>
+<span id="L316" class="LineNr">316 </span><span class="traceContains">+run: return-continuation-until-mark {34: &quot;literal&quot;}</span>
+<span id="L317" class="LineNr">317 </span><span class="Comment"># no allocs abandoned yet</span>
+<span id="L318" class="LineNr">318 </span><span class="traceContains">+mem: storing 34 in location 1</span>
+<span id="L319" class="LineNr">319 </span><span class="Comment"># end of main</span>
+<span id="L320" class="LineNr">320 </span><span class="Comment"># make sure no memory leaks..</span>
+<span id="L321" class="LineNr">321 </span><span class="traceContains">+mem: trying to reclaim local k:continuation</span>
+<span id="L322" class="LineNr">322 </span><span class="traceContains">+mem: automatically abandoning 1007</span>
+<span id="L323" class="LineNr">323 </span><span class="traceContains">+mem: automatically abandoning 1004</span>
+<span id="L324" class="LineNr">324 </span><span class="traceContains">+mem: automatically abandoning 1000</span>
+<span id="L325" class="LineNr">325 </span><span class="Comment"># ..even though we never called the continuation</span>
+<span id="L326" class="LineNr">326 </span><span class="traceAbsent">-app: continuation called</span>
 </pre>
 </body>
 </html>
diff --git a/html/continuation1.mu.html b/html/continuation1.mu.html
index e07db467..0588b688 100644
--- a/html/continuation1.mu.html
+++ b/html/continuation1.mu.html
@@ -58,29 +58,34 @@ if ('onhashchange' in window) {
 </head>
 <body onload='JumpToLine();'>
 <pre id='vimCodeElement'>
-<span id="L1" class="LineNr"> 1 </span><span class="Comment"># example program showing that 'return-continuation-until-mark' can 'pause' a</span>
+<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example program showing that 'return-continuation-until-mark' can 'pause' a</span>
 <span id="L2" class="LineNr"> 2 </span><span class="Comment"># function call, returning a continuation, and that calling the continuation</span>
 <span id="L3" class="LineNr"> 3 </span><span class="Comment"># can 'resume' the paused function call.</span>
-<span id="L4" class="LineNr"> 4 </span>
-<span id="L5" class="LineNr"> 5 </span><span class="muRecipe">def</span> <a href='continuation1.mu.html#L5'>main</a> [
-<span id="L6" class="LineNr"> 6 </span>  <span class="Constant">local-scope</span>
-<span id="L7" class="LineNr"> 7 </span>  k:continuation <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation1.mu.html#L16'>create-yielder</a>
-<span id="L8" class="LineNr"> 8 </span>  <span class="Delimiter">{</span>
-<span id="L9" class="LineNr"> 9 </span>  <span class="Conceal">¦</span> x:num, done?:bool <span class="Special">&lt;-</span> call k  <span class="Comment"># should return 1</span>
-<span id="L10" class="LineNr">10 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
-<span id="L11" class="LineNr">11 </span>  <span class="Conceal">¦</span> $print x <span class="Constant">10/newline</span>
-<span id="L12" class="LineNr">12 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
-<span id="L13" class="LineNr">13 </span>  <span class="Delimiter">}</span>
-<span id="L14" class="LineNr">14 </span>]
-<span id="L15" class="LineNr">15 </span>
-<span id="L16" class="LineNr">16 </span><span class="muRecipe">def</span> <a href='continuation1.mu.html#L16'>create-yielder</a><span class="muRecipe"> -&gt; </span>n:num, done?:bool [
-<span id="L17" class="LineNr">17 </span>  <span class="Constant">local-scope</span>
-<span id="L18" class="LineNr">18 </span>  <span class="Constant">load-ingredients</span>
-<span id="L19" class="LineNr">19 </span>  n <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
-<span id="L20" class="LineNr">20 </span>  return-continuation-until-mark
-<span id="L21" class="LineNr">21 </span>  done?:bool <span class="Special">&lt;-</span> greater-or-equal n,<span class="Constant"> 3</span>
-<span id="L22" class="LineNr">22 </span>  n <span class="Special">&lt;-</span> add n,<span class="Constant"> 1</span>
-<span id="L23" class="LineNr">23 </span>]
+<span id="L4" class="LineNr"> 4 </span><span class="Comment">#</span>
+<span id="L5" class="LineNr"> 5 </span><span class="Comment"># Expected output:</span>
+<span id="L6" class="LineNr"> 6 </span><span class="Comment">#   1</span>
+<span id="L7" class="LineNr"> 7 </span><span class="Comment">#   2</span>
+<span id="L8" class="LineNr"> 8 </span><span class="Comment">#   3</span>
+<span id="L9" class="LineNr"> 9 </span>
+<span id="L10" class="LineNr">10 </span><span class="muRecipe">def</span> <a href='continuation1.mu.html#L10'>main</a> [
+<span id="L11" class="LineNr">11 </span>  <span class="Constant">local-scope</span>
+<span id="L12" class="LineNr">12 </span>  k:continuation <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation1.mu.html#L21'>create-yielder</a>
+<span id="L13" class="LineNr">13 </span>  <span class="Delimiter">{</span>
+<span id="L14" class="LineNr">14 </span>  <span class="Conceal">¦</span> x:num, done?:bool <span class="Special">&lt;-</span> call k  <span class="Comment"># should return 1</span>
+<span id="L15" class="LineNr">15 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
+<span id="L16" class="LineNr">16 </span>  <span class="Conceal">¦</span> $print x <span class="Constant">10/newline</span>
+<span id="L17" class="LineNr">17 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
+<span id="L18" class="LineNr">18 </span>  <span class="Delimiter">}</span>
+<span id="L19" class="LineNr">19 </span>]
+<span id="L20" class="LineNr">20 </span>
+<span id="L21" class="LineNr">21 </span><span class="muRecipe">def</span> <a href='continuation1.mu.html#L21'>create-yielder</a><span class="muRecipe"> -&gt; </span>n:num, done?:bool [
+<span id="L22" class="LineNr">22 </span>  <span class="Constant">local-scope</span>
+<span id="L23" class="LineNr">23 </span>  <span class="Constant">load-ingredients</span>
+<span id="L24" class="LineNr">24 </span>  n <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
+<span id="L25" class="LineNr">25 </span>  return-continuation-until-mark
+<span id="L26" class="LineNr">26 </span>  done?:bool <span class="Special">&lt;-</span> greater-or-equal n,<span class="Constant"> 3</span>
+<span id="L27" class="LineNr">27 </span>  n <span class="Special">&lt;-</span> add n,<span class="Constant"> 1</span>
+<span id="L28" class="LineNr">28 </span>]
 </pre>
 </body>
 </html>
diff --git a/html/continuation2.mu.html b/html/continuation2.mu.html
index 3168a7d2..46e33c2f 100644
--- a/html/continuation2.mu.html
+++ b/html/continuation2.mu.html
@@ -58,33 +58,38 @@ if ('onhashchange' in window) {
 </head>
 <body onload='JumpToLine();'>
 <pre id='vimCodeElement'>
-<span id="L1" class="LineNr"> 1 </span><span class="Comment"># example program showing that a 'paused' continuation can be 'resumed'</span>
-<span id="L2" class="LineNr"> 2 </span><span class="Comment"># multiple times from the same point (but with changes to data)</span>
-<span id="L3" class="LineNr"> 3 </span>
-<span id="L4" class="LineNr"> 4 </span><span class="muRecipe">def</span> <a href='continuation2.mu.html#L4'>main</a> [
-<span id="L5" class="LineNr"> 5 </span>  <span class="Constant">local-scope</span>
-<span id="L6" class="LineNr"> 6 </span>  l:&amp;:<a href='064list.mu.html#L6'>list</a>:num <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
-<span id="L7" class="LineNr"> 7 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 3</span>, l
-<span id="L8" class="LineNr"> 8 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 2</span>, l
-<span id="L9" class="LineNr"> 9 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 1</span>, l
-<span id="L10" class="LineNr">10 </span>  k:continuation <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation2.mu.html#L19'>create-yielder</a>, l
-<span id="L11" class="LineNr">11 </span>  <span class="Delimiter">{</span>
-<span id="L12" class="LineNr">12 </span>  <span class="Conceal">¦</span> x:num, done?:bool <span class="Special">&lt;-</span> call k
-<span id="L13" class="LineNr">13 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
-<span id="L14" class="LineNr">14 </span>  <span class="Conceal">¦</span> $print x <span class="Constant">10/newline</span>
-<span id="L15" class="LineNr">15 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
-<span id="L16" class="LineNr">16 </span>  <span class="Delimiter">}</span>
-<span id="L17" class="LineNr">17 </span>]
-<span id="L18" class="LineNr">18 </span>
-<span id="L19" class="LineNr">19 </span><span class="muRecipe">def</span> <a href='continuation2.mu.html#L19'>create-yielder</a> l:&amp;:<a href='064list.mu.html#L6'>list</a>:num<span class="muRecipe"> -&gt; </span>n:num, done?:bool [
-<span id="L20" class="LineNr">20 </span>  <span class="Constant">local-scope</span>
-<span id="L21" class="LineNr">21 </span>  <span class="Constant">load-ingredients</span>
-<span id="L22" class="LineNr">22 </span>  return-continuation-until-mark
-<span id="L23" class="LineNr">23 </span>  done? <span class="Special">&lt;-</span> equal l,<span class="Constant"> 0</span>
-<span id="L24" class="LineNr">24 </span>  <span class="muControl">return-if</span> done?,<span class="Constant"> 0</span>
-<span id="L25" class="LineNr">25 </span>  n <span class="Special">&lt;-</span> first l
-<span id="L26" class="LineNr">26 </span>  l <span class="Special">&lt;-</span> <a href='064list.mu.html#L24'>rest</a> l
-<span id="L27" class="LineNr">27 </span>]
+<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example program showing that a 'paused' continuation can be 'resumed'</span>
+<span id="L2" class="LineNr"> 2 </span><span class="Comment"># multiple times from the same point (but with changes to data).</span>
+<span id="L3" class="LineNr"> 3 </span><span class="Comment">#</span>
+<span id="L4" class="LineNr"> 4 </span><span class="Comment"># Expected output:</span>
+<span id="L5" class="LineNr"> 5 </span><span class="Comment">#   1</span>
+<span id="L6" class="LineNr"> 6 </span><span class="Comment">#   2</span>
+<span id="L7" class="LineNr"> 7 </span><span class="Comment">#   3</span>
+<span id="L8" class="LineNr"> 8 </span>
+<span id="L9" class="LineNr"> 9 </span><span class="muRecipe">def</span> <a href='continuation2.mu.html#L9'>main</a> [
+<span id="L10" class="LineNr">10 </span>  <span class="Constant">local-scope</span>
+<span id="L11" class="LineNr">11 </span>  l:&amp;:<a href='064list.mu.html#L6'>list</a>:num <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
+<span id="L12" class="LineNr">12 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 3</span>, l
+<span id="L13" class="LineNr">13 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 2</span>, l
+<span id="L14" class="LineNr">14 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 1</span>, l
+<span id="L15" class="LineNr">15 </span>  k:continuation <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation2.mu.html#L24'>create-yielder</a>, l
+<span id="L16" class="LineNr">16 </span>  <span class="Delimiter">{</span>
+<span id="L17" class="LineNr">17 </span>  <span class="Conceal">¦</span> x:num, done?:bool <span class="Special">&lt;-</span> call k
+<span id="L18" class="LineNr">18 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
+<span id="L19" class="LineNr">19 </span>  <span class="Conceal">¦</span> $print x <span class="Constant">10/newline</span>
+<span id="L20" class="LineNr">20 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
+<span id="L21" class="LineNr">21 </span>  <span class="Delimiter">}</span>
+<span id="L22" class="LineNr">22 </span>]
+<span id="L23" class="LineNr">23 </span>
+<span id="L24" class="LineNr">24 </span><span class="muRecipe">def</span> <a href='continuation2.mu.html#L24'>create-yielder</a> l:&amp;:<a href='064list.mu.html#L6'>list</a>:num<span class="muRecipe"> -&gt; </span>n:num, done?:bool [
+<span id="L25" class="LineNr">25 </span>  <span class="Constant">local-scope</span>
+<span id="L26" class="LineNr">26 </span>  <span class="Constant">load-ingredients</span>
+<span id="L27" class="LineNr">27 </span>  return-continuation-until-mark
+<span id="L28" class="LineNr">28 </span>  done? <span class="Special">&lt;-</span> equal l,<span class="Constant"> 0</span>
+<span id="L29" class="LineNr">29 </span>  <span class="muControl">return-if</span> done?,<span class="Constant"> 0</span>
+<span id="L30" class="LineNr">30 </span>  n <span class="Special">&lt;-</span> first l
+<span id="L31" class="LineNr">31 </span>  l <span class="Special">&lt;-</span> <a href='064list.mu.html#L24'>rest</a> l
+<span id="L32" class="LineNr">32 </span>]
 </pre>
 </body>
 </html>
diff --git a/html/continuation3.mu.html b/html/continuation3.mu.html
index 367b3930..e9a9a309 100644
--- a/html/continuation3.mu.html
+++ b/html/continuation3.mu.html
@@ -55,27 +55,35 @@ if ('onhashchange' in window) {
 </head>
 <body onload='JumpToLine();'>
 <pre id='vimCodeElement'>
-<span id="L1" class="LineNr"> 1 </span><span class="Comment"># example program showing that a function call can be 'paused' multiple times,</span>
-<span id="L2" class="LineNr"> 2 </span><span class="Comment"># creating different continuation values</span>
-<span id="L3" class="LineNr"> 3 </span>
-<span id="L4" class="LineNr"> 4 </span><span class="muRecipe">def</span> <a href='continuation3.mu.html#L4'>main</a> [
-<span id="L5" class="LineNr"> 5 </span>  <span class="Constant">local-scope</span>
-<span id="L6" class="LineNr"> 6 </span>  $print <span class="Constant">[caller 0]</span> <span class="Constant">10/newline</span>
-<span id="L7" class="LineNr"> 7 </span>  k:continuation <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation3.mu.html#L14'>f</a>
-<span id="L8" class="LineNr"> 8 </span>  $print <span class="Constant">[caller 1]</span> <span class="Constant">10/newline</span>
-<span id="L9" class="LineNr"> 9 </span>  k <span class="Special">&lt;-</span> call k
-<span id="L10" class="LineNr">10 </span>  $print <span class="Constant">[caller 2]</span> <span class="Constant">10/newline</span>
-<span id="L11" class="LineNr">11 </span>  call k
-<span id="L12" class="LineNr">12 </span>]
-<span id="L13" class="LineNr">13 </span>
-<span id="L14" class="LineNr">14 </span><span class="muRecipe">def</span> <a href='continuation3.mu.html#L14'>f</a> [
-<span id="L15" class="LineNr">15 </span>  <span class="Constant">local-scope</span>
-<span id="L16" class="LineNr">16 </span>  $print <span class="Constant">[callee 0]</span> <span class="Constant">10/newline</span>
-<span id="L17" class="LineNr">17 </span>  return-continuation-until-mark
-<span id="L18" class="LineNr">18 </span>  $print <span class="Constant">[callee 1]</span> <span class="Constant">10/newline</span>
-<span id="L19" class="LineNr">19 </span>  return-continuation-until-mark
-<span id="L20" class="LineNr">20 </span>  $print <span class="Constant">[callee 2]</span> <span class="Constant">10/newline</span>
-<span id="L21" class="LineNr">21 </span>]
+<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example program showing that a function call can be 'paused' multiple times,</span>
+<span id="L2" class="LineNr"> 2 </span><span class="Comment"># creating different continuation values.</span>
+<span id="L3" class="LineNr"> 3 </span><span class="Comment">#</span>
+<span id="L4" class="LineNr"> 4 </span><span class="Comment"># Expected output:</span>
+<span id="L5" class="LineNr"> 5 </span><span class="Comment">#   caller 0</span>
+<span id="L6" class="LineNr"> 6 </span><span class="Comment">#   callee 0</span>
+<span id="L7" class="LineNr"> 7 </span><span class="Comment">#   caller 1</span>
+<span id="L8" class="LineNr"> 8 </span><span class="Comment">#   callee 1</span>
+<span id="L9" class="LineNr"> 9 </span><span class="Comment">#   caller 2</span>
+<span id="L10" class="LineNr">10 </span><span class="Comment">#   callee 2</span>
+<span id="L11" class="LineNr">11 </span>
+<span id="L12" class="LineNr">12 </span><span class="muRecipe">def</span> <a href='continuation3.mu.html#L12'>main</a> [
+<span id="L13" class="LineNr">13 </span>  <span class="Constant">local-scope</span>
+<span id="L14" class="LineNr">14 </span>  $print <span class="Constant">[caller 0]</span> <span class="Constant">10/newline</span>
+<span id="L15" class="LineNr">15 </span>  k:continuation <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation3.mu.html#L22'>f</a>
+<span id="L16" class="LineNr">16 </span>  $print <span class="Constant">[caller 1]</span> <span class="Constant">10/newline</span>
+<span id="L17" class="LineNr">17 </span>  k <span class="Special">&lt;-</span> call k
+<span id="L18" class="LineNr">18 </span>  $print <span class="Constant">[caller 2]</span> <span class="Constant">10/newline</span>
+<span id="L19" class="LineNr">19 </span>  call k
+<span id="L20" class="LineNr">20 </span>]
+<span id="L21" class="LineNr">21 </span>
+<span id="L22" class="LineNr">22 </span><span class="muRecipe">def</span> <a href='continuation3.mu.html#L22'>f</a> [
+<span id="L23" class="LineNr">23 </span>  <span class="Constant">local-scope</span>
+<span id="L24" class="LineNr">24 </span>  $print <span class="Constant">[callee 0]</span> <span class="Constant">10/newline</span>
+<span id="L25" class="LineNr">25 </span>  return-continuation-until-mark
+<span id="L26" class="LineNr">26 </span>  $print <span class="Constant">[callee 1]</span> <span class="Constant">10/newline</span>
+<span id="L27" class="LineNr">27 </span>  return-continuation-until-mark
+<span id="L28" class="LineNr">28 </span>  $print <span class="Constant">[callee 2]</span> <span class="Constant">10/newline</span>
+<span id="L29" class="LineNr">29 </span>]
 </pre>
 </body>
 </html>
diff --git a/html/continuation4.mu.html b/html/continuation4.mu.html
index 546a5533..e59c5aa4 100644
--- a/html/continuation4.mu.html
+++ b/html/continuation4.mu.html
@@ -58,41 +58,48 @@ if ('onhashchange' in window) {
 </head>
 <body onload='JumpToLine();'>
 <pre id='vimCodeElement'>
-<span id="L1" class="LineNr"> 1 </span><span class="Comment"># example program showing 'return-continuation-until-mark' return other values</span>
-<span id="L2" class="LineNr"> 2 </span><span class="Comment"># alongside continuations</span>
-<span id="L3" class="LineNr"> 3 </span>
-<span id="L4" class="LineNr"> 4 </span><span class="muRecipe">def</span> <a href='continuation4.mu.html#L4'>main</a> [
-<span id="L5" class="LineNr"> 5 </span>  <span class="Constant">local-scope</span>
-<span id="L6" class="LineNr"> 6 </span>  l:&amp;:<a href='064list.mu.html#L6'>list</a>:num <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
-<span id="L7" class="LineNr"> 7 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 3</span>, l
-<span id="L8" class="LineNr"> 8 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 2</span>, l
-<span id="L9" class="LineNr"> 9 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 1</span>, l
-<span id="L10" class="LineNr">10 </span>  k:continuation, x:num, done?:bool <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation4.mu.html#L19'>create-yielder</a>, l
-<span id="L11" class="LineNr">11 </span>  <span class="Delimiter">{</span>
-<span id="L12" class="LineNr">12 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
-<span id="L13" class="LineNr">13 </span>  <span class="Conceal">¦</span> $print x <span class="Constant">10/newline</span>
-<span id="L14" class="LineNr">14 </span>  <span class="Conceal">¦</span> k, x:num, done?:bool <span class="Special">&lt;-</span> call k
-<span id="L15" class="LineNr">15 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
-<span id="L16" class="LineNr">16 </span>  <span class="Delimiter">}</span>
-<span id="L17" class="LineNr">17 </span>]
-<span id="L18" class="LineNr">18 </span>
-<span id="L19" class="LineNr">19 </span><span class="muRecipe">def</span> <a href='continuation4.mu.html#L19'>create-yielder</a> l:&amp;:<a href='064list.mu.html#L6'>list</a>:num<span class="muRecipe"> -&gt; </span>n:num, done?:bool [
-<span id="L20" class="LineNr">20 </span>  <span class="Constant">local-scope</span>
-<span id="L21" class="LineNr">21 </span>  <span class="Constant">load-ingredients</span>
-<span id="L22" class="LineNr">22 </span>  <span class="Delimiter">{</span>
-<span id="L23" class="LineNr">23 </span>  <span class="Conceal">¦</span> done? <span class="Special">&lt;-</span> equal l,<span class="Constant"> 0</span>
-<span id="L24" class="LineNr">24 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
-<span id="L25" class="LineNr">25 </span>  <span class="Conceal">¦</span> n <span class="Special">&lt;-</span> first l
-<span id="L26" class="LineNr">26 </span>  <span class="Conceal">¦</span> l <span class="Special">&lt;-</span> <a href='064list.mu.html#L24'>rest</a> l
-<span id="L27" class="LineNr">27 </span>  <span class="Conceal">¦</span> return-continuation-until-mark n, done?
-<span id="L28" class="LineNr">28 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
-<span id="L29" class="LineNr">29 </span>  <span class="Delimiter">}</span>
-<span id="L30" class="LineNr">30 </span>  <span class="Comment"># A function that returns continuations shouldn't get the opportunity to</span>
-<span id="L31" class="LineNr">31 </span>  <span class="Comment"># return. Calling functions should stop calling its continuation after this</span>
-<span id="L32" class="LineNr">32 </span>  <span class="Comment"># point.</span>
-<span id="L33" class="LineNr">33 </span>  return-continuation-until-mark<span class="Constant"> -1</span>, done?
-<span id="L34" class="LineNr">34 </span>  assert <span class="Constant">0/false</span>, <span class="Constant">[called too many times, ran out of continuations to return]</span>
-<span id="L35" class="LineNr">35 </span>]
+<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example program showing 'return-continuation-until-mark' return other values</span>
+<span id="L2" class="LineNr"> 2 </span><span class="Comment"># alongside continuations.</span>
+<span id="L3" class="LineNr"> 3 </span><span class="Comment">#</span>
+<span id="L4" class="LineNr"> 4 </span><span class="Comment"># Print out a given list of numbers.</span>
+<span id="L5" class="LineNr"> 5 </span><span class="Comment">#</span>
+<span id="L6" class="LineNr"> 6 </span><span class="Comment"># Expected output:</span>
+<span id="L7" class="LineNr"> 7 </span><span class="Comment">#   1</span>
+<span id="L8" class="LineNr"> 8 </span><span class="Comment">#   2</span>
+<span id="L9" class="LineNr"> 9 </span><span class="Comment">#   3</span>
+<span id="L10" class="LineNr">10 </span>
+<span id="L11" class="LineNr">11 </span><span class="muRecipe">def</span> <a href='continuation4.mu.html#L11'>main</a> [
+<span id="L12" class="LineNr">12 </span>  <span class="Constant">local-scope</span>
+<span id="L13" class="LineNr">13 </span>  l:&amp;:<a href='064list.mu.html#L6'>list</a>:num <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
+<span id="L14" class="LineNr">14 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 3</span>, l
+<span id="L15" class="LineNr">15 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 2</span>, l
+<span id="L16" class="LineNr">16 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 1</span>, l
+<span id="L17" class="LineNr">17 </span>  k:continuation, x:num, done?:bool <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation4.mu.html#L26'>create-yielder</a>, l
+<span id="L18" class="LineNr">18 </span>  <span class="Delimiter">{</span>
+<span id="L19" class="LineNr">19 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
+<span id="L20" class="LineNr">20 </span>  <span class="Conceal">¦</span> $print x <span class="Constant">10/newline</span>
+<span id="L21" class="LineNr">21 </span>  <span class="Conceal">¦</span> k, x:num, done?:bool <span class="Special">&lt;-</span> call k
+<span id="L22" class="LineNr">22 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
+<span id="L23" class="LineNr">23 </span>  <span class="Delimiter">}</span>
+<span id="L24" class="LineNr">24 </span>]
+<span id="L25" class="LineNr">25 </span>
+<span id="L26" class="LineNr">26 </span><span class="muRecipe">def</span> <a href='continuation4.mu.html#L26'>create-yielder</a> l:&amp;:<a href='064list.mu.html#L6'>list</a>:num<span class="muRecipe"> -&gt; </span>n:num, done?:bool [
+<span id="L27" class="LineNr">27 </span>  <span class="Constant">local-scope</span>
+<span id="L28" class="LineNr">28 </span>  <span class="Constant">load-ingredients</span>
+<span id="L29" class="LineNr">29 </span>  <span class="Delimiter">{</span>
+<span id="L30" class="LineNr">30 </span>  <span class="Conceal">¦</span> done? <span class="Special">&lt;-</span> equal l,<span class="Constant"> 0</span>
+<span id="L31" class="LineNr">31 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
+<span id="L32" class="LineNr">32 </span>  <span class="Conceal">¦</span> n <span class="Special">&lt;-</span> first l
+<span id="L33" class="LineNr">33 </span>  <span class="Conceal">¦</span> l <span class="Special">&lt;-</span> <a href='064list.mu.html#L24'>rest</a> l
+<span id="L34" class="LineNr">34 </span>  <span class="Conceal">¦</span> return-continuation-until-mark n, done?
+<span id="L35" class="LineNr">35 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
+<span id="L36" class="LineNr">36 </span>  <span class="Delimiter">}</span>
+<span id="L37" class="LineNr">37 </span>  <span class="Comment"># A function that returns continuations shouldn't get the opportunity to</span>
+<span id="L38" class="LineNr">38 </span>  <span class="Comment"># return. Calling functions should stop calling its continuation after this</span>
+<span id="L39" class="LineNr">39 </span>  <span class="Comment"># point.</span>
+<span id="L40" class="LineNr">40 </span>  return-continuation-until-mark<span class="Constant"> -1</span>, done?
+<span id="L41" class="LineNr">41 </span>  assert <span class="Constant">0/false</span>, <span class="Constant">[called too many times, ran out of continuations to return]</span>
+<span id="L42" class="LineNr">42 </span>]
 </pre>
 </body>
 </html>
diff --git a/html/continuation5.mu.html b/html/continuation5.mu.html
new file mode 100644
index 00000000..c32b1d39
--- /dev/null
+++ b/html/continuation5.mu.html
@@ -0,0 +1,108 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - continuation5.mu</title>
+<meta name="Generator" content="Vim/7.4">
+<meta name="plugin-version" content="vim7.4_v2">
+<meta name="syntax" content="none">
+<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
+<meta name="colorscheme" content="minimal">
+<style type="text/css">
+<!--
+pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; }
+body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; }
+a { color:#eeeeee; text-decoration: none; }
+a:hover { text-decoration: underline; }
+* { font-size: 12pt; font-size: 1em; }
+.muRecipe { color: #ff8700; }
+.Special { color: #c00000; }
+.Conceal { color: #4e4e4e; }
+.Delimiter { color: #800080; }
+.Comment { color: #9090ff; }
+.Comment a { color:#0000ee; text-decoration:underline; }
+.Constant { color: #00a0a0; }
+.LineNr { color: #444444; }
+.muControl { color: #c0a020; }
+-->
+</style>
+
+<script type='text/javascript'>
+<!--
+
+/* function to open any folds containing a jumped-to line before jumping to it */
+function JumpToLine()
+{
+  var lineNum;
+  lineNum = window.location.hash;
+  lineNum = lineNum.substr(1); /* strip off '#' */
+
+  if (lineNum.indexOf('L') == -1) {
+    lineNum = 'L'+lineNum;
+  }
+  lineElem = document.getElementById(lineNum);
+  /* Always jump to new location even if the line was hidden inside a fold, or
+   * we corrected the raw number to a line ID.
+   */
+  if (lineElem) {
+    lineElem.scrollIntoView(true);
+  }
+  return true;
+}
+if ('onhashchange' in window) {
+  window.onhashchange = JumpToLine;
+}
+
+-->
+</script>
+</head>
+<body onload='JumpToLine();'>
+<pre id='vimCodeElement'>
+<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example program showing that a 'paused' continuation can be 'resumed' with</span>
+<span id="L2" class="LineNr"> 2 </span><span class="Comment"># ingredients.</span>
+<span id="L3" class="LineNr"> 3 </span><span class="Comment">#</span>
+<span id="L4" class="LineNr"> 4 </span><span class="Comment"># Print out a list of numbers, first adding 0 to the first, 1 to the second, 2</span>
+<span id="L5" class="LineNr"> 5 </span><span class="Comment"># to the third, and so on.</span>
+<span id="L6" class="LineNr"> 6 </span><span class="Comment">#</span>
+<span id="L7" class="LineNr"> 7 </span><span class="Comment"># Expected output:</span>
+<span id="L8" class="LineNr"> 8 </span><span class="Comment">#   1</span>
+<span id="L9" class="LineNr"> 9 </span><span class="Comment">#   3</span>
+<span id="L10" class="LineNr">10 </span><span class="Comment">#   5</span>
+<span id="L11" class="LineNr">11 </span>
+<span id="L12" class="LineNr">12 </span><span class="muRecipe">def</span> <a href='continuation5.mu.html#L12'>main</a> [
+<span id="L13" class="LineNr">13 </span>  <span class="Constant">local-scope</span>
+<span id="L14" class="LineNr">14 </span>  l:&amp;:<a href='064list.mu.html#L6'>list</a>:num <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
+<span id="L15" class="LineNr">15 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 3</span>, l
+<span id="L16" class="LineNr">16 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 2</span>, l
+<span id="L17" class="LineNr">17 </span>  l <span class="Special">&lt;-</span> push<span class="Constant"> 1</span>, l
+<span id="L18" class="LineNr">18 </span>  k:continuation, x:num, done?:bool <span class="Special">&lt;-</span> call-with-continuation-mark <a href='continuation5.mu.html#L29'>create-yielder</a>, l
+<span id="L19" class="LineNr">19 </span>  a:num <span class="Special">&lt;-</span> copy<span class="Constant"> 1</span>
+<span id="L20" class="LineNr">20 </span>  <span class="Delimiter">{</span>
+<span id="L21" class="LineNr">21 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
+<span id="L22" class="LineNr">22 </span>  <span class="Conceal">¦</span> $print x <span class="Constant">10/newline</span>
+<span id="L23" class="LineNr">23 </span>  <span class="Conceal">¦</span> k, x:num, done?:bool <span class="Special">&lt;-</span> call k, a  <span class="Comment"># resume; x = a + next l value</span>
+<span id="L24" class="LineNr">24 </span>  <span class="Conceal">¦</span> a <span class="Special">&lt;-</span> add a,<span class="Constant"> 1</span>
+<span id="L25" class="LineNr">25 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
+<span id="L26" class="LineNr">26 </span>  <span class="Delimiter">}</span>
+<span id="L27" class="LineNr">27 </span>]
+<span id="L28" class="LineNr">28 </span>
+<span id="L29" class="LineNr">29 </span><span class="muRecipe">def</span> <a href='continuation5.mu.html#L29'>create-yielder</a> l:&amp;:<a href='064list.mu.html#L6'>list</a>:num<span class="muRecipe"> -&gt; </span>n:num, done?:bool [
+<span id="L30" class="LineNr">30 </span>  <span class="Constant">local-scope</span>
+<span id="L31" class="LineNr">31 </span>  <span class="Constant">load-ingredients</span>
+<span id="L32" class="LineNr">32 </span>  a:num <span class="Special">&lt;-</span> copy<span class="Constant"> 0</span>
+<span id="L33" class="LineNr">33 </span>  <span class="Delimiter">{</span>
+<span id="L34" class="LineNr">34 </span>  <span class="Conceal">¦</span> done? <span class="Special">&lt;-</span> equal l,<span class="Constant"> 0</span>
+<span id="L35" class="LineNr">35 </span>  <span class="Conceal">¦</span> <span class="muControl">break-if</span> done?
+<span id="L36" class="LineNr">36 </span>  <span class="Conceal">¦</span> n <span class="Special">&lt;-</span> first l
+<span id="L37" class="LineNr">37 </span>  <span class="Conceal">¦</span> l <span class="Special">&lt;-</span> <a href='064list.mu.html#L24'>rest</a> l
+<span id="L38" class="LineNr">38 </span>  <span class="Conceal">¦</span> n <span class="Special">&lt;-</span> add n, a
+<span id="L39" class="LineNr">39 </span>  <span class="Conceal">¦</span> a <span class="Special">&lt;-</span> return-continuation-until-mark n, done?  <span class="Comment"># pause/resume</span>
+<span id="L40" class="LineNr">40 </span>  <span class="Conceal">¦</span> <span class="muControl">loop</span>
+<span id="L41" class="LineNr">41 </span>  <span class="Delimiter">}</span>
+<span id="L42" class="LineNr">42 </span>  return-continuation-until-mark<span class="Constant"> -1</span>, done?
+<span id="L43" class="LineNr">43 </span>  assert <span class="Constant">0/false</span>, <span class="Constant">[called too many times, ran out of continuations to return]</span>
+<span id="L44" class="LineNr">44 </span>]
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->
diff --git a/index.html b/index.html
index 58e510d9..faa64497 100644
--- a/index.html
+++ b/index.html
@@ -54,7 +54,8 @@ screen and keyboard handling.
   <a href='html/continuation1.mu.html'>1</a>,
   <a href='html/continuation2.mu.html'>2</a>,
   <a href='html/continuation3.mu.html'>3</a>,
-  <a href='html/continuation4.mu.html'>4</a>.
+  <a href='html/continuation4.mu.html'>4</a>,
+  <a href='html/continuation5.mu.html'>5</a>.
 </ul>
 
 Now a listing of every layer in Mu. Recall that you can <a href='http://akkartik.name/post/wart-layers'>stop
diff --git a/update_html b/update_html
index 3128e2ed..651b287f 100755
--- a/update_html
+++ b/update_html
@@ -7,7 +7,7 @@ set -e
 
 # generate html/$1.html using /tmp/tags
 process() {
-  rm html/$1.html
+  rm -f html/$1.html
   convert_html $1
   linkify/linkify /tmp/tags html/$1.html
   mv html/$1.html.out html/$1.html