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refactor(lang): rename the fn keyword to function

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Expand the function-declaration keyword to the full word across the whole
language and toolchain:
  fn name(...) -> T { ... }   ->   function name(...) -> T { ... }

Done as a self-hosting migration: teach the parser both spellings, reseed,
rewrite every .ludic definition to `function`, then drop `fn`. The compiler
now rejects `fn`. Touches the parser, all selfhost/tools/runtime/example/test
sources, the grammars (TextMate shared+vscode, ludic_syntax.h, JetBrains
LudicTokens.kt), the LSP and formatter, the Python doc/vocab tools
(check-impl, check-docs, validate, palette, test-lsp), and the docs
(fences, prose, kw-fn -> kw-function).

Reseeded; C-free bootstrap fixpoint holds. All suites green (45 regression,
24 self-host, 29 tool); the docs site generates and check.py passes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-30 01:43:22 +03:00
parent 2f19c8d8e2
commit 4c48077d68
86 changed files with 793 additions and 793 deletions
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6
tools/docgen/check-impl.py
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@ -33,12 +33,12 @@ def read(*parts):
def fn_body(text, name):
"""The source of `fn <name>` up to the next top-level `fn ` (or EOF)."""
m = re.search(r"^fn %s\b" % re.escape(name), text, re.M)
"""The source of `function <name>` up to the next top-level `function ` (or EOF)."""
m = re.search(r"^function %s\b" % re.escape(name), text, re.M)
if not m:
return ""
rest = text[m.end():]
nxt = re.search(r"^fn ", rest, re.M)
nxt = re.search(r"^function ", rest, re.M)
return text[m.start(): m.end() + (nxt.start() if nxt else len(rest))]