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[lexical-markdown] Bug Fix: Keep backslashes in leading code spans and unescape text only once - #9396
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…d unescape text only once
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## Description After #9396, a text-match transformer that returns nothing can leave its matched text in the document without decoding its escapes or character references. This affects custom transformers that edit or move the supplied node, and the built-in link transformer when it declines a match such as `[a\*b]](url)`. Keep the matched node alongside the returned node so retained, non-code text is unescaped once when no node was returned for recursive processing. Check for a parent rather than root attachment so detached Markdown generation works too. Code-formatted text and newly generated replacement text remain literal. Add 40 cases covering escaped punctuation, character references, declined links, moved and returned nodes, code and replacement text, with and without a prefix, in attached and detached trees. ## Test plan ### Before With the new tests on 5885b8c and unchanged implementation: ```text $ node /workspace/lexical/node_modules/vitest/vitest.mjs run --project unit packages/lexical-markdown/src/__tests__/unit/RetainedTextMatchImport.test.ts --maxWorkers=1 --vmMemoryLimit=512MB Test Files 1 failed (1) Tests 28 failed | 12 passed (40) ``` ### After ```text $ node /workspace/lexical/node_modules/vitest/vitest.mjs run --project unit packages/lexical-markdown packages/lexical-mdast packages/lexical-playground/__tests__/unit --maxWorkers=1 --vmMemoryLimit=512MB Test Files 44 passed (44) Tests 1163 passed (1163) ``` The test TypeScript check (`tsc -p tsconfig.test.json --noEmit`), ESLint and Prettier on all three changed files, and `git diff --check` passed. Checks ran directly through the installed binaries. The initial before-test run emitted a Vite dependency-scan warning about the unrelated generated devtools `.wxt/tsconfig.json`; tests still executed normally. Tested on Linux with Node 24.19.0. Browser, E2E, builds, Flow and other platforms were not run.
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…ed since #9353 ## Description The changesets in this PR covered main up to #9353. Since then, 27 PRs that change a published package's shipped code have merged without one, so the v0.53.0 release would list them only under "All changes". This adds a changeset for each, with a `PR:` line and the author's handle: - `[breaking]`: #9478 (`@lexical/mdast` table alignment moves out of the `mdastTableAlign` NodeState) and #9329 (`reconcileObservedMutation`, `@internal`), both with `Migration:` and `Detect:`. - `[feature]`: #9452, #9421, #9380 (experimental), #9360, #9365. - `[perf]`: #9349. - `[fix]`: the remaining 19. #9396, #9392, #9270 and #9360 carry `Verify:` because they change observable output. Website, playground, devtools, CI and internal lint changes need none. ## Test plan ### Before ``` $ git log --format=%s fd661f0..origin/main # merged since this PR's base (27 PRs touching published packages' src/flow, none with a changeset) ``` ### After ``` $ pnpm run check-changesets Changeset check passed: 54 pending changeset(s) valid. $ pnpm run changelog ## v0.53.0 (2026-10-27) ### Breaking changes - **lexical, @lexical/clipboard, @lexical/selection, @lexical/table**: Let mouse drags select across inline decorators; ... (#9329) - **@lexical/mdast**: `MdastTableExtension` reads and writes GFM tables, ... (#9478) - **@lexical/code-core, ...**: Remove the extensions deprecated in v0.52.0 and earlier (#9316) ### Behavior changes ... ```
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Description
Markdown import unescaped the original text node after transformers finished, even when that node had already been processed recursively or converted to inline code. This removed literal backslashes from leading code spans and decoded escapes twice in reused text nodes.
Only unescape unmatched text, plus retained non-code text that a text-match transformer leaves behind without returning a node for recursive processing. This also handles custom transformers that edit or move the supplied node and the built-in link transformer when it declines a match.
Retained nodes are checked for a parent so detached Markdown generation works too. Code spans and newly generated replacement text keep their literal content.
Closes #9395
Closes #9333
Test plan
Added the four import/export regressions from #9395 and 40 cases covering retained text matches, escaped punctuation, character references, declined links, returned and moved nodes, code, and replacement text. Cases run with and without a prefix in attached and detached trees.
Before
The four #9395 import regressions fail on the base.
The retained-match tests against the earlier PR head report:
After
The test TypeScript check, ESLint and Prettier on the follow-up’s three changed files, and
git diff --checkpass.Tested on Linux with Node 24.19.0. Local browser, E2E, builds, Flow and other platforms were not run.