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authorKartik K. Agaram <vc@akkartik.com>2018-01-25 22:39:31 -0800
committerKartik K. Agaram <vc@akkartik.com>2018-01-25 22:39:31 -0800
commit805d58c6aeeeba3e4989c0eed6781b3861e8fae0 (patch)
treeea5225bdd7c5fbeea912671cdc5f1c4b2b2828d7 /html/087file.cc.html
parentaefa8fec6a473be459a2ff33e6bd96e7c22ced20 (diff)
downloadmu-805d58c6aeeeba3e4989c0eed6781b3861e8fae0.tar.gz
4199
Diffstat (limited to 'html/087file.cc.html')
-rw-r--r--html/087file.cc.html133
1 files changed, 66 insertions, 67 deletions
diff --git a/html/087file.cc.html b/html/087file.cc.html
index 2e279a33..9e677f11 100644
--- a/html/087file.cc.html
+++ b/html/087file.cc.html
@@ -15,15 +15,14 @@ body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color
 a { color:#eeeeee; text-decoration: none; }
 a:hover { text-decoration: underline; }
 * { font-size: 12pt; font-size: 1em; }
-.Conceal { color: #4e4e4e; }
 .PreProc { color: #800080; }
 .LineNr { color: #444444; }
-.Identifier { color: #c0a020; }
 .Constant { color: #00a0a0; }
+.Delimiter { color: #800080; }
+.Identifier { color: #c0a020; }
 .Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; }
 .Comment { color: #9090ff; }
 .Comment a { color:#0000ee; text-decoration:underline; }
-.Delimiter { color: #800080; }
 .cSpecial { color: #008000; }
 -->
 </style>
@@ -77,26 +76,26 @@ if ('onhashchange' in window) {
 <span id="L16" class="LineNr"> 16 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span id="L17" class="LineNr"> 17 </span><span class="Normal">case</span> _OPEN_FILE_FOR_READING: <span class="Delimiter">{</span>
 <span id="L18" class="LineNr"> 18 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L19" class="LineNr"> 19 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$open-file-for-reading' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L20" class="LineNr"> 20 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L19" class="LineNr"> 19 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$open-file-for-reading' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L20" class="LineNr"> 20 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L21" class="LineNr"> 21 </span>  <span class="Delimiter">}</span>
 <span id="L22" class="LineNr"> 22 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L23" class="LineNr"> 23 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$open-file-for-reading' should be a string, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L24" class="LineNr"> 24 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L23" class="LineNr"> 23 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$open-file-for-reading' should be a string, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L24" class="LineNr"> 24 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L25" class="LineNr"> 25 </span>  <span class="Delimiter">}</span>
 <span id="L26" class="LineNr"> 26 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L27" class="LineNr"> 27 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$open-file-for-reading' requires exactly one product, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L28" class="LineNr"> 28 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L27" class="LineNr"> 27 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$open-file-for-reading' requires exactly one product, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L28" class="LineNr"> 28 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L29" class="LineNr"> 29 </span>  <span class="Delimiter">}</span>
 <span id="L30" class="LineNr"> 30 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L31" class="LineNr"> 31 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first product of '$open-file-for-reading' should be a number (file handle), but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L32" class="LineNr"> 32 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L31" class="LineNr"> 31 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first product of '$open-file-for-reading' should be a number (file handle), but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L32" class="LineNr"> 32 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L33" class="LineNr"> 33 </span>  <span class="Delimiter">}</span>
 <span id="L34" class="LineNr"> 34 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L35" class="LineNr"> 35 </span><span class="Delimiter">}</span>
 <span id="L36" class="LineNr"> 36 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
 <span id="L37" class="LineNr"> 37 </span><span class="Normal">case</span> _OPEN_FILE_FOR_READING: <span class="Delimiter">{</span>
-<span id="L38" class="LineNr"> 38 </span>  string filename = <a href='038new_text.cc.html#L143'>read_mu_text</a><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>
+<span id="L38" class="LineNr"> 38 </span>  string filename = <a href='038new_text.cc.html#L141'>read_mu_text</a><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>
 <span id="L39" class="LineNr"> 39 </span>  assert<span class="Delimiter">(</span><span class="Normal">sizeof</span><span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span><span class="Delimiter">)</span> &gt;= <span class="Normal">sizeof</span><span class="Delimiter">(</span><span class="Normal">FILE</span>*<span class="Delimiter">));</span>
 <span id="L40" class="LineNr"> 40 </span>  <span class="Normal">FILE</span>* f = fopen<span class="Delimiter">(</span>filename<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> <span class="Constant">&quot;r&quot;</span><span class="Delimiter">);</span>
 <span id="L41" class="LineNr"> 41 </span>  <span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> result = <span class="Normal">reinterpret_cast</span>&lt;<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span>&gt;<span class="Delimiter">(</span>f<span class="Delimiter">);</span>
@@ -112,26 +111,26 @@ if ('onhashchange' in window) {
 <span id="L51" class="LineNr"> 51 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span id="L52" class="LineNr"> 52 </span><span class="Normal">case</span> _OPEN_FILE_FOR_WRITING: <span class="Delimiter">{</span>
 <span id="L53" class="LineNr"> 53 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L54" class="LineNr"> 54 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$open-file-for-writing' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L55" class="LineNr"> 55 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L54" class="LineNr"> 54 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$open-file-for-writing' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L55" class="LineNr"> 55 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L56" class="LineNr"> 56 </span>  <span class="Delimiter">}</span>
 <span id="L57" class="LineNr"> 57 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L58" class="LineNr"> 58 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$open-file-for-writing' should be a string, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L59" class="LineNr"> 59 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L58" class="LineNr"> 58 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$open-file-for-writing' should be a string, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L59" class="LineNr"> 59 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L60" class="LineNr"> 60 </span>  <span class="Delimiter">}</span>
 <span id="L61" class="LineNr"> 61 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L62" class="LineNr"> 62 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$open-file-for-writing' requires exactly one product, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L63" class="LineNr"> 63 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L62" class="LineNr"> 62 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$open-file-for-writing' requires exactly one product, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L63" class="LineNr"> 63 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L64" class="LineNr"> 64 </span>  <span class="Delimiter">}</span>
 <span id="L65" class="LineNr"> 65 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</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#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first product of '$open-file-for-writing' should be a number (file handle), but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L67" class="LineNr"> 67 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L66" class="LineNr"> 66 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first product of '$open-file-for-writing' should be a number (file handle), but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L67" class="LineNr"> 67 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L68" class="LineNr"> 68 </span>  <span class="Delimiter">}</span>
 <span id="L69" class="LineNr"> 69 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L70" class="LineNr"> 70 </span><span class="Delimiter">}</span>
 <span id="L71" class="LineNr"> 71 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
 <span id="L72" class="LineNr"> 72 </span><span class="Normal">case</span> _OPEN_FILE_FOR_WRITING: <span class="Delimiter">{</span>
-<span id="L73" class="LineNr"> 73 </span>  string filename = <a href='038new_text.cc.html#L143'>read_mu_text</a><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>
+<span id="L73" class="LineNr"> 73 </span>  string filename = <a href='038new_text.cc.html#L141'>read_mu_text</a><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>
 <span id="L74" class="LineNr"> 74 </span>  assert<span class="Delimiter">(</span><span class="Normal">sizeof</span><span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span><span class="Delimiter">)</span> &gt;= <span class="Normal">sizeof</span><span class="Delimiter">(</span><span class="Normal">FILE</span>*<span class="Delimiter">));</span>
 <span id="L75" class="LineNr"> 75 </span>  <span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> result = <span class="Normal">reinterpret_cast</span>&lt;<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span>&gt;<span class="Delimiter">(</span>fopen<span class="Delimiter">(</span>filename<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> <span class="Constant">&quot;w&quot;</span><span class="Delimiter">));</span>
 <span id="L76" class="LineNr"> 76 </span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
@@ -146,24 +145,24 @@ if ('onhashchange' in window) {
 <span id="L85" class="LineNr"> 85 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span id="L86" class="LineNr"> 86 </span><span class="Normal">case</span> _READ_FROM_FILE: <span class="Delimiter">{</span>
 <span id="L87" class="LineNr"> 87 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L88" class="LineNr"> 88 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$read-from-file' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L89" class="LineNr"> 89 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L88" class="LineNr"> 88 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$read-from-file' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L89" class="LineNr"> 89 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L90" class="LineNr"> 90 </span>  <span class="Delimiter">}</span>
 <span id="L91" class="LineNr"> 91 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L92" class="LineNr"> 92 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$read-from-file' should be a number, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L93" class="LineNr"> 93 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L92" class="LineNr"> 92 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$read-from-file' should be a number, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L93" class="LineNr"> 93 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L94" class="LineNr"> 94 </span>  <span class="Delimiter">}</span>
 <span id="L95" class="LineNr"> 95 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L96" class="LineNr"> 96 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$read-from-file' requires exactly two products, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L97" class="LineNr"> 97 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L96" class="LineNr"> 96 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$read-from-file' requires exactly two products, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L97" class="LineNr"> 97 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L98" class="LineNr"> 98 </span>  <span class="Delimiter">}</span>
 <span id="L99" class="LineNr"> 99 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_character<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L100" class="LineNr">100 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first product of '$read-from-file' should be a character, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L101" class="LineNr">101 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L100" class="LineNr">100 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first product of '$read-from-file' should be a character, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L101" class="LineNr">101 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L102" class="LineNr">102 </span>  <span class="Delimiter">}</span>
 <span id="L103" class="LineNr">103 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L104" class="LineNr">104 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;second product of '$read-from-file' should be a boolean, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L105" class="LineNr">105 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L104" class="LineNr">104 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;second product of '$read-from-file' should be a boolean, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L105" class="LineNr">105 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L106" class="LineNr">106 </span>  <span class="Delimiter">}</span>
 <span id="L107" class="LineNr">107 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L108" class="LineNr">108 </span><span class="Delimiter">}</span>
@@ -172,29 +171,29 @@ if ('onhashchange' in window) {
 <span id="L111" class="LineNr">111 </span>  <span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> x = <span class="Normal">static_cast</span>&lt;<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span>&gt;<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>
 <span id="L112" class="LineNr">112 </span>  <span class="Normal">FILE</span>* f = <span class="Normal">reinterpret_cast</span>&lt;<span class="Normal">FILE</span>*&gt;<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
 <span id="L113" class="LineNr">113 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>f == <span class="Constant">NULL</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L114" class="LineNr">114 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;can't read from null file in '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>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="L115" class="LineNr">115 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L114" class="LineNr">114 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;can't read from null file in '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>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="L115" class="LineNr">115 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L116" class="LineNr">116 </span>  <span class="Delimiter">}</span>
 <span id="L117" class="LineNr">117 </span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>
 <span id="L118" class="LineNr">118 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>feof<span class="Delimiter">(</span>f<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L119" class="LineNr">119 </span>  <span class="Conceal">¦</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><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L120" class="LineNr">120 </span>  <span class="Conceal">¦</span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>  <span class="Comment">// eof</span>
-<span id="L121" class="LineNr">121 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L119" class="LineNr">119 </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><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L120" class="LineNr">120 </span>    products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>  <span class="Comment">// eof</span>
+<span id="L121" class="LineNr">121 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L122" class="LineNr">122 </span>  <span class="Delimiter">}</span>
 <span id="L123" class="LineNr">123 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>ferror<span class="Delimiter">(</span>f<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L124" class="LineNr">124 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;file in invalid state in '&quot;</span> &lt;&lt; to_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#L203'>end</a><span class="Delimiter">();</span>
-<span id="L125" class="LineNr">125 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L124" class="LineNr">124 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;file in invalid state in '&quot;</span> &lt;&lt; to_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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L125" class="LineNr">125 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L126" class="LineNr">126 </span>  <span class="Delimiter">}</span>
 <span id="L127" class="LineNr">127 </span>  <span class="Normal">char</span> c = getc<span class="Delimiter">(</span>f<span class="Delimiter">);</span>  <span class="Comment">// todo: unicode</span>
 <span id="L128" class="LineNr">128 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">EOF</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L129" class="LineNr">129 </span>  <span class="Conceal">¦</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><span class="Constant">0</span><span class="Delimiter">);</span>
-<span id="L130" class="LineNr">130 </span>  <span class="Conceal">¦</span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>  <span class="Comment">// eof</span>
-<span id="L131" class="LineNr">131 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L129" class="LineNr">129 </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><span class="Constant">0</span><span class="Delimiter">);</span>
+<span id="L130" class="LineNr">130 </span>    products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>  <span class="Comment">// eof</span>
+<span id="L131" class="LineNr">131 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L132" class="LineNr">132 </span>  <span class="Delimiter">}</span>
 <span id="L133" class="LineNr">133 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>ferror<span class="Delimiter">(</span>f<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L134" class="LineNr">134 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;couldn't read from file in '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>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="L135" class="LineNr">135 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <span class="Constant">&quot;  errno: &quot;</span> &lt;&lt; errno &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L136" class="LineNr">136 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L134" class="LineNr">134 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;couldn't read from file in '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>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="L135" class="LineNr">135 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <span class="Constant">&quot;  errno: &quot;</span> &lt;&lt; errno &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
+<span id="L136" class="LineNr">136 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L137" class="LineNr">137 </span>  <span class="Delimiter">}</span>
 <span id="L138" class="LineNr">138 </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>c<span class="Delimiter">);</span>
 <span id="L139" class="LineNr">139 </span>  products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>  <span class="Comment">// not eof</span>
@@ -210,20 +209,20 @@ if ('onhashchange' in window) {
 <span id="L149" class="LineNr">149 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span id="L150" class="LineNr">150 </span><span class="Normal">case</span> _WRITE_TO_FILE: <span class="Delimiter">{</span>
 <span id="L151" class="LineNr">151 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L152" class="LineNr">152 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$write-to-file' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L153" class="LineNr">153 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L152" class="LineNr">152 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$write-to-file' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L153" class="LineNr">153 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L154" class="LineNr">154 </span>  <span class="Delimiter">}</span>
 <span id="L155" class="LineNr">155 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L156" class="LineNr">156 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$write-to-file' should be a number, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L157" class="LineNr">157 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L156" class="LineNr">156 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$write-to-file' should be a number, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L157" class="LineNr">157 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L158" class="LineNr">158 </span>  <span class="Delimiter">}</span>
 <span id="L159" class="LineNr">159 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_character<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L160" class="LineNr">160 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;second ingredient of '$write-to-file' should be a character, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L161" class="LineNr">161 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L160" class="LineNr">160 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;second ingredient of '$write-to-file' should be a character, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L161" class="LineNr">161 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L162" class="LineNr">162 </span>  <span class="Delimiter">}</span>
 <span id="L163" class="LineNr">163 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
-<span id="L164" class="LineNr">164 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$write-to-file' writes to no products, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L165" class="LineNr">165 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L164" class="LineNr">164 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$write-to-file' writes to no products, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L165" class="LineNr">165 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L166" class="LineNr">166 </span>  <span class="Delimiter">}</span>
 <span id="L167" class="LineNr">167 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L168" class="LineNr">168 </span><span class="Delimiter">}</span>
@@ -232,21 +231,21 @@ if ('onhashchange' in window) {
 <span id="L171" class="LineNr">171 </span>  <span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> x = <span class="Normal">static_cast</span>&lt;<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span>&gt;<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>
 <span id="L172" class="LineNr">172 </span>  <span class="Normal">FILE</span>* f = <span class="Normal">reinterpret_cast</span>&lt;<span class="Normal">FILE</span>*&gt;<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
 <span id="L173" class="LineNr">173 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>f == <span class="Constant">NULL</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L174" class="LineNr">174 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;can't write to null file in '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>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="L175" class="LineNr">175 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L174" class="LineNr">174 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;can't write to null file in '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>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="L175" class="LineNr">175 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L176" class="LineNr">176 </span>  <span class="Delimiter">}</span>
 <span id="L177" class="LineNr">177 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>feof<span class="Delimiter">(</span>f<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L178" class="LineNr">178 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>ferror<span class="Delimiter">(</span>f<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L179" class="LineNr">179 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;file in invalid state in '&quot;</span> &lt;&lt; to_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#L203'>end</a><span class="Delimiter">();</span>
-<span id="L180" class="LineNr">180 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L179" class="LineNr">179 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;file in invalid state in '&quot;</span> &lt;&lt; to_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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L180" class="LineNr">180 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L181" class="LineNr">181 </span>  <span class="Delimiter">}</span>
 <span id="L182" class="LineNr">182 </span>  <span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> y = <span class="Normal">static_cast</span>&lt;<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span>&gt;<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span>
 <span id="L183" class="LineNr">183 </span>  <span class="Normal">char</span> c = <span class="Normal">static_cast</span>&lt;<span class="Normal">char</span>&gt;<span class="Delimiter">(</span>y<span class="Delimiter">);</span>
 <span id="L184" class="LineNr">184 </span>  putc<span class="Delimiter">(</span>c<span class="Delimiter">,</span> f<span class="Delimiter">);</span>  <span class="Comment">// todo: unicode</span>
 <span id="L185" class="LineNr">185 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>ferror<span class="Delimiter">(</span>f<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L186" class="LineNr">186 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;couldn't write to file in '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>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="L187" class="LineNr">187 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <span class="Constant">&quot;  errno: &quot;</span> &lt;&lt; errno &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L188" class="LineNr">188 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L186" class="LineNr">186 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;couldn't write to file in '&quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>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="L187" class="LineNr">187 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <span class="Constant">&quot;  errno: &quot;</span> &lt;&lt; errno &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
+<span id="L188" class="LineNr">188 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L189" class="LineNr">189 </span>  <span class="Delimiter">}</span>
 <span id="L190" class="LineNr">190 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L191" class="LineNr">191 </span><span class="Delimiter">}</span>
@@ -258,20 +257,20 @@ if ('onhashchange' in window) {
 <span id="L197" class="LineNr">197 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span id="L198" class="LineNr">198 </span><span class="Normal">case</span> _CLOSE_FILE: <span class="Delimiter">{</span>
 <span id="L199" class="LineNr">199 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L200" class="LineNr">200 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$close-file' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L201" class="LineNr">201 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L200" class="LineNr">200 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$close-file' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L201" class="LineNr">201 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L202" class="LineNr">202 </span>  <span class="Delimiter">}</span>
 <span id="L203" class="LineNr">203 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-<span id="L204" class="LineNr">204 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$close-file' should be a number, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L205" class="LineNr">205 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L204" class="LineNr">204 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of '$close-file' should be a number, but got '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L205" class="LineNr">205 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L206" class="LineNr">206 </span>  <span class="Delimiter">}</span>
 <span id="L207" class="LineNr">207 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L208" class="LineNr">208 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$close-file' requires exactly one product, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L209" class="LineNr">209 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L208" class="LineNr">208 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$close-file' requires exactly one product, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L209" class="LineNr">209 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L210" class="LineNr">210 </span>  <span class="Delimiter">}</span>
 <span id="L211" class="LineNr">211 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != inst<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 class="Delimiter">{</span>
-<span id="L212" class="LineNr">212 </span>  <span class="Conceal">¦</span> <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$close-file' requires its product to be the same as its ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
-<span id="L213" class="LineNr">213 </span>  <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span id="L212" class="LineNr">212 </span>    <a href='003trace.cc.html#L174'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'$close-file' requires its product to be the same as its ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<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#L203'>end</a><span class="Delimiter">();</span>
+<span id="L213" class="LineNr">213 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L214" class="LineNr">214 </span>  <span class="Delimiter">}</span>
 <span id="L215" class="LineNr">215 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span id="L216" class="LineNr">216 </span><span class="Delimiter">}</span>