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Retire the byte-for-byte fidelity constraint, and fix what it was blocking

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The Go reference is deprecated and will not be updated, so the two projects
are no longer required to match. Recorded as TODO.md section 0.1, first thing
in the file, because it silently reverses the premise several later sections
were written on -- an agent reading section 6 without it will park work that
is no longer blocked.

Section 6 item 16 was the item waiting on exactly this and is now fixed: the
keyword tables are searched on the base name with any type suffix stripped, so
PRINT$, LEN# and GOTO% are refused as variable names and the reference's own
diagnostic stops being dead code. It cost the one golden case predicted, and
the cost was nothing -- renaming a variable in strreverse.bas left its expected
output byte-for-byte unchanged.

AKBASIC_KNOWN_FAILING_TESTS is empty as a result and known_reference_defects.c
is gone. Section 6 items 1-9 and 11 are reopened as an ordinary defect list.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Andrew Kesterson
2026-07-31 12:52:00 -04:00
parent eb5374d212
commit 583c0abbd2
9 changed files with 205 additions and 127 deletions
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6
CLAUDE.md
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@@ -7,6 +7,12 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
`akbasic` is a **C rewrite of the Go BASIC interpreter in `deps/basicinterpret`**, written in the same
style as the `ak*` C libraries it builds on.
**That Go project is deprecated and will not be updated, and this interpreter is no longer required
to match it.** See `TODO.md` §0.1, which is the first thing to read: it retires the byte-for-byte
fidelity constraint that several sections of that file were written on. The reference's corpus is
checked in at `tests/reference/` and stays green as a *regression* suite; the Go source stays
readable as documentation of what the original did. Neither is binding any more.
The repository is currently **empty apart from its submodules** — no commits, no source tree, no build
files. The staged content is `.gitmodules` plus four submodules under `deps/`. Everything below the
"Project goals" section describes the material to build from, not code that exists here yet.