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fix: consume whitespace after hexadecimal escapes - #340
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* origin/main: fix: preserve selector delimiters after escaped backslashes (postcss#354) fix: keep the processor's entry points usable when destructured feat: support the case-sensitive attribute flag (s) per Selectors Level 4 (postcss#327) fix: escape values assigned to an id through the value setter (postcss#326) fix: escape class values supplied to the constructor (postcss#349) fix: preserve the spaces declared on selector and root containers (postcss#356) fix: forward the default options given to the parser factory (postcss#345) 7.1.8 fix: remove four more quadratic paths from selector parsing chore(deps): bump tinypool and oxfmt (postcss#351) 7.1.7 docs: add CVE-2026-104844 to the 7.1.6 changelog entry fix: keep whitespace around the namespace separator in attribute selectors (postcss#339) fix: invalidate stale raw spelling on combinator value assignment (postcss#342) fix: set parents for all variadic inserted nodes (postcss#343) Consume whitespace after hexadecimal CSS escapes (postcss#340) fix: lossless mode drops whitespace when a selector ends empty (postcss#337) chore(deps-dev): bump source-map-js from 1.2.1 to 1.2.2 (postcss#347) 7.1.6 fix: parse flat selectors in linear time, closing a CPU exhaustion vulnerability # Conflicts: # src/parser.js
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Parsing
[x="\000061 b"]currently produces the attribute valuea binstead ofab. Changing the node's quote mark then serializes a selector matching a different value.Consume the optional CSS whitespace after the hexadecimal digits, including after a six-digit escape. Handle CRLF as one newline and preserve the original raw selector. Add public parser regressions for each whitespace form, replacement characters, and boundaries that must stay in the value.
Validation: 15 regression cases fail before the fix.
npm testpasses lint, types, coverage thresholds, and all 834 tests on Node 24 and 26. The existing 30 unescape tests also pass; 48 original/reserialized selector pairs match the expected attribute in Chrome. Changed-file formatting passes; the full formatting check flags only unchangedsrc/__tests__/exceptions.mjs.