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spec: ISC-WF-1 keyword-table note — ruleset keywords in the reference grammars #262

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ronaldtse merged 1 commit into from
Nov 8, 2026
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spec: ISC-WF-1 keyword-table note — ruleset keywords in the reference grammars #262

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11 changes: 7 additions & 4 deletions docs/isc-wf-1.md
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Expand Up @@ -47,10 +47,13 @@ sub_rule = ... ( "when" ident ( "," ident )* )?
alongside `metadata`.
- `when` attaches to a `sub` rule only (not to blocks).
- New keywords `use`, `override`, `languages`, `when` join the
keyword table; maps using them as identifiers retain pass-through
behavior only via the existing quoted-string forms (no corpus map
uses these four words as bare identifiers; verified against the
404-map corpus at adoption time).
keyword table, as does `ruleset` (the block head; the ruby/ts/py
grammars keyword it, the rs grammar keeps it out of its table with
equivalent corpus behavior). Maps using them as identifiers retain
pass-through behavior only via the existing quoted-string forms (no
corpus map uses any of these five words as bare identifiers;
verified against the corpus at adoption time, re-verified including
the libraries at the pilot landing).

## 3. W1 — named rulesets

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