Naiyuan Qing 171ee842d4 fix(editor): preserve raw html-like text on paste (#3355) ...

* fix(editor): fall back to literal paste when markdown parser drops all content

When pasting text like `<T>` or `<MyComponent>`, the CommonMark-compliant
markdown parser treats them as inline HTML tags. ProseMirror's schema doesn't
recognize unknown HTML elements, so they are silently dropped — producing an
empty document from non-empty input.

Detect this case (non-empty input → empty parse result) and fall back to
literal text insertion so the user sees their text instead of nothing.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>

* fix(editor): escape non-standard HTML tags in paste to prevent content loss

When pasting mixed content containing multiple <tag> patterns (e.g.
"<t>\n裸 `<tag>` 做转\n<tag>\n<t>"), CommonMark treats bare <word>
as inline HTML. ProseMirror silently drops unknown HTML elements,
causing partial content loss. The previous empty-result fallback only
caught the single-tag case where the entire parse result was empty.

Pre-process paste text before markdown parsing: escape <tag> patterns
whose tag name is not a standard HTML element, while respecting inline
code spans and fenced code blocks. Standard HTML (div, br, img, etc.)
passes through normally.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>

* fix(editor): preserve raw html-like text on paste

* fix(editor): prefer rich html paste when semantic

* fix(editor): avoid native paste when html drops raw tags

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Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>

2026-05-27 17:14:10 +08:00

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