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Layer 2 provides an almost fully functioning interactive editor:
$ ./mu edit/00[12]* -- abcdef
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Takes the text to render inside the editor on the commandline:
$ ./mu edit/001-editor.mu -- abcdef
Layer 1 has no interactivity. Just shows the text you pass in on the
commandline, wrapping as you would expect. Press any key to exit.
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Ingredients of 'main' are always strings (type address:array:character),
and are delineated from .mu files to load by a "--", e.g.:
$ ./mu x.mu y.mu -- a b c
Here 'main' must be defined in one of x.mu and y.mu, and will receive
the ingredients "a", "b", and "c".
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`render-string` (and `render-code-string`; ugh) should start a new line
after, not before, like everybody else.
I've been meaning to fix this for a long time, but now I have to, to
move the warnings fields out of early layers.
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Starting on making the basic programming environment oblivious to
warnings. That should come later.
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To run just until say layer 6, say this:
$ ./mu test edit/00[0-6]*
The layers are not perfect yet; there might be a few things (like the
warning fields) that need to move to a later layer.
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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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Follow-up to 2147, which switched transform_all to only run once, after
loading all layers.
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This will let me create separate 'main' recipes at each layer so people
can interact with less featureful versions.
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edit.mu is now over 9k lines long. Only 2.6k of them are code. Plan:
chunk it into multiple files inside say an 'edit' directory. Then you
can run it with:
$ mu edit/*
I also want to be able to test just a few layers:
$ mu edit/00[1-5]*
When I try to chunk it into files, the first issue I run into is that
before/after can't refer back to previous layers. Solution:
transform_all at one shot after loading all files.
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On slow networks sometimes escape sequences were being partially
consumed, causing junk to be added to the editor when you pressed arrow
keys and so on. Now we have a way to wait.
Empirically seems to work if I page-up and then scroll back up using
up-arrow. Before I'd consistently get junk even on my local machine. Now
I no longer do.
If we still see problems I'll increase the wait time and see if the
increase helps. Then we'll know more about this approach.
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This bit of code is complex enough now that I'm bothered I can't write
tests for has-more-events?
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This seemingly simple goal uncovered a little nest of bugs: it turns out
I've been awash in ambiguous labels until now. My baseline recipes in
edit.mu were clean, but they introduced duplicate <waypoints> -- and
*those* waypoints contained +jump-targets. Result: duplicate jump
targets, so that I wasn't jumping where I thought I was jumping. Somehow
I happened to be picking one of the alternatives that magically kept
these issues quiescent.
My first plan to fix this was to mangle names of all labels inside
before/after fragments, keep the jump targets private to their fragment.
But the labels also include more waypoints! Mangle those, and I can't
tangle to them anymore.
Solution: harden the convention that jump targets begin with '+' and
waypoints are surrounded by '<>'. Mangle jump targets occurring inside
before/after fragments to keep them private to their lexical fragment,
but *don't* mangle waypoints, which must remain globally accessible.
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Tangle points aren't unique within a recipe and cannot be jumped to.
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I'm starting to feel the need for separating labels to jump to (so must
be unique per recipe) from labels you can tangle at (need not be
unique). Maybe just use a sigil different from '+'?
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I ran into this inside 'reload' when I left a trailing comment at the
end of the editor.
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For some reason porting the termbox-go implementation was still leaving
some gunk from git on screen when I ran my usual test:
$ mkdir lesson; cd lesson; git init; mu edit.mu
Then hit F4, generating messages from git on the initial commit.
Then hit ctrl-l to clear all git gunk.
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