docs(tools): reflow the identifier-skew comment paragraphs to the 80-column wrap

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Chinesezjc
2026-08-06 00:37:51 +08:00
parent 24cfe8f777
commit 670d6511af

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@@ -51,17 +51,16 @@ const IDENTIFIER = /^[\p{XID_Start}_]\p{XID_Continue}*$/u
* two sides are versioned independently — `\p{XID_Start}`/`\p{XID_Continue}` * two sides are versioned independently — `\p{XID_Start}`/`\p{XID_Continue}`
* follow the running engine (Node 22.23.1 reports Unicode 17.0) while CPython * follow the running engine (Node 22.23.1 reports Unicode 17.0) while CPython
* follows its own (3.9.6 reports 13.0.0). The skew is not symmetric. A CPython * follows its own (3.9.6 reports 13.0.0). The skew is not symmetric. A CPython
* older than the engine is the dangerous direction: a character added to * older than the engine is the dangerous direction: a character added to either
* either property since its tables (U+10570 Vithkuqi and U+1E290 Toto, 14.0; * property since its tables (U+10570 Vithkuqi and U+1E290 Toto, 14.0; U+1E4D0
* U+1E4D0 Nag Mundari, 15.0; U+1C89 Cyrillic TJE, 16.0 — ages per * Nag Mundari, 15.0; U+1C89 Cyrillic TJE, 16.0 — ages per `DerivedAge.txt`; all
* `DerivedAge.txt`; all four are NFKC-stable and accepted here, and all four * four are NFKC-stable and accepted here, and all four are `Cn` on that 3.9.6,
* are `Cn` on that 3.9.6, which rejects them) is emitted bare and its * which rejects them) is emitted bare and its tokenizer refuses the character,
* tokenizer refuses the character, taking the whole SDK block * taking the whole SDK block down — the same parseability invariant
* down — the same parseability invariant {@link UNPRINTABLE}, * {@link UNPRINTABLE}, {@link LONE_SURROGATE} and {@link MAX_LIST_NESTING}
* {@link LONE_SURROGATE} and {@link MAX_LIST_NESTING} exist for. Both * exist for. Both properties carry it: a character added only to `XID_Continue`
* properties carry it: a character added only to `XID_Continue` passes the * passes the trailing `\p{XID_Continue}*` in a tail position and fails the same
* trailing `\p{XID_Continue}*` in a tail position and fails the same way. A * way. A CPython newer than the engine only routes a legal name to the
* CPython newer than the engine only routes a legal name to the
* subscript/`dict[str, Any]` path: less readable, still correct. The NFKC * subscript/`dict[str, Any]` path: less readable, still correct. The NFKC
* condition reduces to the same skew, since normalization stability guarantees * condition reduces to the same skew, since normalization stability guarantees
* an assigned character's normalization never changes afterwards. * an assigned character's normalization never changes afterwards.
@@ -72,19 +71,18 @@ const IDENTIFIER = /^[\p{XID_Start}_]\p{XID_Continue}*$/u
* them: a class name derived there reaches emitted text whenever any object * them: a class name derived there reaches emitted text whenever any object
* shape in the tool's schema declares a `TypedDict`, including for a tool this * shape in the tool's schema declares a `TypedDict`, including for a tool this
* predicate rejected. A tool named `zz-\u{1E4D0}x` with such parameters never * predicate rejected. A tool named `zz-\u{1E4D0}x` with such parameters never
* reaches the skew here (the `-` rejects it outright) yet emits * reaches the skew here (the `-` rejects it outright) yet emits `class
* `class Zz\u{1E4D0}xArgs`, which that same 3.9.6 refuses — Nag Mundari * Zz\u{1E4D0}xArgs`, which that same 3.9.6 refuses — Nag Mundari arrived two
* arrived two releases after its tables. The case mapping is a separate table * releases after its tables. The case mapping is a separate table rather than
* rather than an XID membership test, and it fails on names both conditions * an XID membership test, and it fails on names both conditions above accept:
* above accept: `\u{019B}` is XID_Start and NFKC-stable, so * `\u{019B}` is XID_Start and NFKC-stable, so this predicate accepts it and
* this predicate accepts it and `async def \u{019B}` compiles on 3.9.6, but * `async def \u{019B}` compiles on 3.9.6, but Node uppercases it to `\u{A7DC}`
* Node uppercases it to `\u{A7DC}` — unassigned in that CPython, whose own * — unassigned in that CPython, whose own `.upper()` is the identity here — and
* `.upper()` is the identity here — and the declared `class \u{A7DC}Args` * the declared `class \u{A7DC}Args` fails with `invalid non-printable character
* fails with `invalid non-printable character U+A7DC`. Closing the exposure * U+A7DC`. Closing the exposure therefore covers all four read points, not this
* therefore covers all four read points, not this predicate alone; it needs * predicate alone; it needs the target interpreter's version, which the backend
* the target interpreter's version, which the backend reporting * reporting `language: 'python'` owns and which is unpublished on this base, so
* `language: 'python'` owns and which is unpublished on this base, so the note * the note records it as that PR's decision.
* records it as that PR's decision.
* *
* The `ts-types` sibling keeps its own ASCII rule rather than sharing this * The `ts-types` sibling keeps its own ASCII rule rather than sharing this
* one: ECMAScript identifiers are a different set (`$`, ZWJ/ZWNJ) and are * one: ECMAScript identifiers are a different set (`$`, ZWJ/ZWNJ) and are