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Process type abbreviations in function headers.
Still a couple of places where doing this causes strange errors. We'll
track those down next.
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In the process I've uncover a couple of situations we don't support type
abbreviations yet. They're next.
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In some rare situations the editor would join a line with the next when
it should simply wrap to the next screen row. Thanks Caleb and Ella
Couch for finally running into a situation that was easy to reproduce.
The scenario diffs are misleading on this commit. I had to:
a) delete the obsolete 'editor-wraps-cursor-after-inserting-characters'
because it was written back when a line just large enough to fit in a
single line would not wrap:
| | <-- screen boundary
abcde
These days it will wrap after making room for the wrap indicator:
| | <-- screen boundary
abcd↩
e
b) rename editor-wraps-cursor-after-inserting-characters-2 to
editor-wraps-cursor-after-inserting-characters-in-middle-of-line
c) create a new scenario demonstrating the bug:
editor-wraps-cursor-after-inserting-characters-at-end-of-line
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Clean up this helper before we start redoing sandbox menubars.
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Now that we no longer have non-shared addresses, we can just always
track refcounts for all addresses.
Phew!
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Phew!
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I'm dropping all mention of 'recipe' terminology from the Readme. That
way I hope to avoid further bike-shedding discussions while I very
slowly decide on the right terminology with my students.
I could be smarter in my error messages and use 'recipe' when code uses
it and 'function' otherwise. But what about other words like ingredient?
It would all add complexity that I'm not yet sure is worthwhile. But I
do want separate experiences for veteran programmers reading about Mu on
github and for people learning programming using Mu.
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This is the one major refinement on the C programming model I'm planning
to introduce in mu. Instead of Rust's menagerie of pointer types and
static checking, I want to introduce just one new type, and use it to
perform ref-counting at runtime.
So far all we're doing is updating new's interface. The actual
ref-counting implementation is next.
One implication: I might sometimes need duplicate implementations for a
recipe with allocated vs vanilla addresses of the same type. So far it
seems I can get away with just always passing in allocated addresses;
the situations when you want to pass an unallocated address to a recipe
should be few and far between.
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Great that it just worked after the previous commit.
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If a name repeats between ingredients, we raise an error.
If a name repeats across ingredients and products, every call should
share the same name across the corresponding ingredients and products.
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One nice consequence of all my deduction of reply ingredients is that I
can insert the same fragment into recipes with different headers, and
everything works as long as reply instructions are implicitly deduced.
One thing I had to fix to make this work was to move reply-deduction out
of rewrite rules and turn it into a first-class transform, so that it
happens after tangling.
I'm glad to see the back of that hack inside <scroll-down>.
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Layer 2 provides an almost fully functioning interactive editor:
$ ./mu edit/00[12]* -- abcdef
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Now you can bring up the programming environment by saying:
$ mu edit
The files under edit aren't yet *layers*, though, they have a few
dependencies that we need to clean up.
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