fix(static-renderer): keep the xmlns prefix out of closing tags - #8227
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fix(static-renderer): keep the xmlns prefix out of closing tags#8227giaBaoJS wants to merge 2 commits into
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A namespaced DOMOutputSpec is encoded by ProseMirror as "<namespace> <localName>". The HTML string renderer rewrote the tag variable in place to carry the xmlns attribute, so every closing tag reused the decorated string and emitted </svg xmlns="...">, and the NON_SELF_CLOSING_TAGS lookup tested the decorated string too, self-closing namespaced div/iframe/span elements. Keep the bare local name in tag and add openTag for the opening positions. Fixes ueberdosis#8155
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Included review availability: Your plan provides up to 10 included reviews per hour; 5 remain after this review. 📝 WalkthroughSummary
WalkthroughThe static renderer now separates namespace declarations from local tag names. Closing tags use local names, and namespaced non-self-closing elements render correctly. Tests cover SVG output and XHTML local-name handling. ChangesNamespaced static rendering
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🔵 Low · up to The renderer now preserves namespaced local names in closing tags and avoids incorrectly self-closing eligible elements, with regression coverage for both behaviors. The remaining merge-readiness concern is the missing required demo update for this user-visible change, which needs explicit owner follow-up. Suggested labels: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In @.changeset/fix-static-renderer-namespaced-tag.md:
- Line 5: Rewrite the changeset description to focus only on user-visible
rendering behavior: namespaced non-self-closing elements now produce valid
matching closing tags instead of self-closing markup.
In `@packages/static-renderer/src/pm/html-string/html-string.ts`:
- Around line 49-89: Add or update the static renderer demo to include a
namespaced element specification, demonstrating an opening tag with the
namespace declaration and a closing tag using only the local name. Keep the
example aligned with the namespaced handling in domOutputSpecToHTMLString and
preserve the existing demo structure.
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.changeset/fix-static-renderer-namespaced-tag.mdpackages/static-renderer/__tests__/json-string.spec.tspackages/static-renderer/src/pm/html-string/html-string.ts
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Fixes
Fixes #8155
Changes and Review
ProseMirror encodes a namespaced
DOMOutputSpecas"<namespace> <localName>".domOutputSpecToHTMLStringrewrote thetagvariable in place to`${parts[1]} xmlns="${parts[0]}"`, so the decorated string reached every position that only wanted the local name. That produced two bugs from one root cause:["http://www.w3.org/2000/svg svg", …]rendered</svg xmlns="http://www.w3.org/2000/svg">. Browsers ignore it, but an XML parser rejects the string andeditor.getHTML()gives plain</svg>.NON_SELF_CLOSING_TAGS.has(tag)tested it too, so a namespaceddiv,iframeorspancould never match the set and was self-closed as<div xmlns="…"/>. This half was not in the issue report — I hit it while writing the fix.The fix splits the two roles:
tagkeeps the bare local name (used for closing tags and the set lookup) and a newopenTagcarries thexmlnsattribute for opening positions. This matches whatpm/react/react.tsalready does — it keepsparts[1]as the tag and putsparts[0]into the attributes.Two regression tests in
json-string.spec.ts, one per symptom. I verified they are independent: reverting only the closing-tag change fails only the first, and reverting only theNON_SELF_CLOSING_TAGSlookup fails only the second.Note for reviewers: #8138 is open against the same function and edits the
NON_SELF_CLOSING_TAGSset contents. This PR does not touch the set, only the value looked up in it, so the two should merge cleanly in either order.Checklist
Responsibility
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Per
CONTRIBUTING.md: I used an AI coding assistant while preparing this change.Adding it explicitly rather than relying on the Responsibility checkbox alone, since the contributing guide asks for it in the description. Everything stated above is measured rather than asserted — the counterfactual results come from actually reverting each half of the fix and re-running the suite, and the baseline test counts are from a clean checkout.