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Bugfix on commit 3853: clear `render-all-on-no-more-events` once you've
actually run the `render-all`.
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Revert commits 3824, 3850 and 3852. We'll redo them more carefully.
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Bring back commit 3844, albeit in simplified form. I'd forgotten that the
one place where we still need to buffer rendering is when people hold down
up/down arrow keys.
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Bugfix of commit 3850 for the sandbox/ app. I'd hoped to just quickly move
past this ugly approach, but a cleaner way is more involved than I thought.
This way is ugly partly because I'm introducing a bunch of conditionals
without testing them. One or more of my additions may well be hiding bugs.
Or I may need to add them in a few other places.
The clean way is to update the fake screen model to accurately mimic the
new real screen, where out of bounds prints aren't silently ignored, and
where scrolling is a fact of life.
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Once I start optimizing most events to not repaint everything there's no
need to be smart about queued-up events.
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Fix CI.
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Now it's much more apparent why things are slow. You can see each repaint
happening. Already I fixed one performance bug -- in clear-rest-of-screen.
Since this subverts Mu's fake screen there may be bugs.
Another salubrious side effect: I've finally internalized that switching
to raw mode doesn't have to clear the screen. That was just an artifact
of how termbox abstracted operations. Now I can conceive of using termbox
to build a repl as well.
(I was inspired to poke into termbox internals by
http://viewsourcecode.org/snaptoken/kilo and
https://github.com/antirez/linenoise)
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Standardize the order of some common blocks in `render`, `render-text`
and `render-code`. This is preparation for trying to reorganize them to
reduce duplicate code.
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Fix a _very_ misleading comment.
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Move 'render-code' to the layer where it's used.
Thanks Caleb Couch for finding this bit of ugliness.
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Don't try to snapshot in scenarios.
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I accidentally got rid of git snapshotting of lessons back when I switched
to testable file primitives last December (commit 3705).
>:-(
Bringing it back now, hopefully better. The improvement is that there's
now at most one commit every time we hit F4.
This change adds yet another reason that running `mu` from a different
directory is just not supported.
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Bitrot in main when loading just layer 1 of the edit/ and sandbox/ apps.
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Reorder products of some functions in the edit/ and sandbox/ apps. My
recent realization: always return 'real' products before ones that just
indicate an ingredient is mutable.
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Delete some obsolete /same-as-ingredient attributes. We should always
let Mu deduce those at this point.
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Update sandbox/ with recent changes to edit/ (commit 3695 onwards).
[Incidentally, this is the first commit to be made while running on
OpenBSD. Simulated and host systems are going to blur together from now
on.]
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Periodic cleanup to replace 'reply' with 'return' everywhere in the
repo.
I use 'reply' for students to help reinforce the metaphor of function
calls as being like messages through a pipe. But that causes 'reply' to
get into my muscle memory when writing Mu code for myself, and I worry
that that makes Mu seem unnecessarily alien to anybody reading on
Github.
Perhaps I should just give it up? I'll try using 'return' with my next
student.
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Cleaning up the console interfaces before we start changing the socket
interfaces to look like them. Reading from sockets need to be
non-blocking just like reading from the console.
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Stop requiring jump instructions to explicitly provide a ':label' type
for jump targets.
This has been a source of repeated confusion for my students:
a) They'd add the ':label' to the label definition rather than the
jump target (label use)
b) They'd spend time thinking about whether the initial '+' prefix was
part of the label name.
In the process I cleaned up a couple of things:
- the space of names is more cleanly partitioned into labels and
non-labels (clarifying that '_' and '-' are non-label prefixes)
- you can't use label names as regular variables anymore
- you can infer the type of a label just from its name
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Redo commit 3457.
Basically there were 3 unicode characters we changed back then:
solid horizontal line: 9473 -> 9472
fuzzy horizontal line: 9480 -> 9548
fuzzy vertical line: 9482 -> 9550
The solid horizontal line has no issues, so we just redo it here.
For the other two, we'll perform the substitution only when rendering
html. That gives us the best of both worlds: the scenario screens render
right in html, and alt-tabbing continues to be snappy when running the
edit/ app.
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Revert commit 3457, where I switched the unicode characters used in the
edit/ app to something that doesn't render double-wide in html. It turns
out that the new unicode characters made iTerm2 sluggish in alt-tabbing
between windows. (Commit 3488 only fixed the screen-clearing issue.)
I haven't reverted the html files. I'm going to redo commit 3457 next so
the html files continue to render like they do now.
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Switch around some unicode characters in the edit/ app so that it
renders more cleanly in html (with monospace fonts).
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Ugly that we didn't need 'screen' to provide a type in scenarios
(because assume-screen expands to a definition of 'screen') but we did
need a type for 'console'. Just never require types for special names in
scenarios.
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A long-standing problem has been that I couldn't spread code across
'run' blocks because they were separate scopes, so I've ended up making
them effectively comments. Running code inside a 'run' block is
identical in every way to simply running the code directly. The 'run'
block is merely a visual aid to separate setup from the component under
test.
In the process I've also standardized all Mu scenarios to always run in
a local scope, and only use (raw) numeric addresses for values they want
to check later.
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Well, almost. I can't use them in some places in C++ where I'm just
creating a temporary reagent without passing it through transforms. Like
in some unit tests. I can't use them in memory-should-contain.
And there's one remaining bug: I can't use abbreviations in a couple of
places in 075channel.mu.
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Fix some tests and make them less fragile.
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Done using 'text' type abbreviation everywhere.
There's still a problem. If we define a function with a type
abbreviation and then redefine it without, I think we end up creating
separate variants. That seems wrong. Let's isolate a scenario for that
next.
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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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Process type abbreviations in container definitions.
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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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Fix some breaking sandbox/ tests.
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Thanks Sam Putman for helping think through this idea.
When you encounter a backslash, strip it out and pass through any
following run of backslashes. If we 'escaped' a single following
character like C, then the character '\' would be the same as:
'\\' escaped once
'\\\\' escaped twice
'\\\\\\\\' escaped thrice (8 backslashes)
..and so on, the number of backslashes doubling each time. Instead, our
approach is to make the character '\' the same as:
'\\' escaped once
'\\\' escaped twice
'\\\\' escaped thrice
..and so on, the number of backslashes merely increasing by one each
time.
This approach only works as long as backslashes aren't also overloaded
to create special characters. So Mu doesn't follow C's approach of
overloading backslashes both to escape quote characters and also as a
notation for unprintable characters like '\n'.
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This is part of efforts to allow students to transition gradually from
the sandbox to running programs directly on the commandline, writing
real scenarios, etc. Running on the commandline requires 'main', but
overriding 'main' would mess up edit/ which is itself a Mu program.
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I'd been toying with this idea for some time now given how large the
repo had been growing. The final straw was noticing that people cloning
the repo were having to wait *5 minutes*! That's not good, particularly
for a project with 'tiny' in its description. After purging .traces/
clone time drops to 7 seconds in my tests.
Major issue: some commits refer to .traces/ but don't really change
anything there. That could get confusing :/
Minor issues:
a) I've linked inside commits on GitHub like a half-dozen times online
or over email. Those links are now liable to eventually break. (I seem
to recall GitHub keeps them around as long as they get used at least
once every 60 days, or something like that.)
b) Numbering of commits is messed up because some commits only had
changes to the .traces/ sub-directory.
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