| Commit message (Collapse) | Author | Age | Files | Lines |
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Both manual tests described in commit 7222 now work.
To make them work I had to figure out how to copy a file. It
requires a dependency on a new syscall: lseek.
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I can't get file values to exhibit the same problem. Why are fake screens
special?
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We're still busted, but on the right track.
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This bug was incredibly painful to track down: the one-line fix is to replace
'line' with 'first-line' in the call to 'evaluate' in render-line before
recursing.
Things that made it challenging:
- A high degree of coiling with recursive calls and multiple places of
evaluation.
- An accidental aliasing in bindings (when rendering the main column in
render-line) that masked the underlying bug and made things seem to work
most of the time.
- Too many fucking arguments to render-line, a maze of twisty line objects
all alike.
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Attempt #3: always create a copy of the bindings before each column/evaluate.
The details are fuzzy in my head, but it seemed worth trying. I figured
I'd either see the old duplication behavior or everything will work. Instead
I'm seeing new problems.
commit 7208:
5 5 fake-screen =s
s 1 down 1 right
expected:
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observed:
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commit 7210-7212:
5 5 fake-screen =s
s 1 down 1 right
[define foo]
s foo
[expand foo]
observed: no bindings available when rendering foo expanded
commit 7213:
5 5 fake-screen =s
s 1 down 1 right
[define foo]
s foo
[expand foo]
expected within foo:
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observed within foo:
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commit 7215:
5 5 fake-screen =s
s 1 down 1 right
[define foo]
s foo
[expand foo]
observed: no bindings available when rendering foo expanded
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Turns out even that doesn't work.
There are two distinct use cases here:
1. Keeping columns from infecting each other.
2. Expanding function calls.
Perhaps ping-ponging between them is a sign I need tests.
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It turns out deciding when to initialize the table of bindings is quite
a thorny problem in the presence of function calls (since they need their
args bound). In time I should probably support a linked list of tables.
For now I'll just continue to reuse tables, but perform lookups in reverse
order so that the correct binding is always returned.
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https://github.com/akkartik/mu/issues/45#issuecomment-719990879, task 2.
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Segfault now fixed. Everything seems to be working again.
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Emit a stack of not ints but more complex objects containing the int payload.
Function calls again segfaulting.
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First function call working in apps/tile!
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Snapshot: tile currently segfaulting. I need to back up and make it easier
to debug.
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