fix: use quote-aware tag close detection in FAST parser plugin#242
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fix: use quote-aware tag close detection in FAST parser plugin#242
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janechu
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mohamedmansour
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Apr 16, 2026
When condition expressions contain `>` or `>=` operators (e.g.,
`<if condition="vara > 2">`), the naive `tag_str.find('>')` matches
the `>` inside the quoted attribute value instead of the actual tag
closing bracket. This causes the conversion to produce malformed
`<f-template>` output with mismatched `<if condition=...></f-when>` tags.
Replace all `tag_str.find('>')` calls with `find_tag_close()` that
skips `>` characters inside double-quoted attribute values.
Co-authored-by: Copilot <[email protected]>
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Description
Fix malformed
<f-template>output when condition expressions contain>or>=operators.When converting
<if condition="vara > 2">to<f-when value="{{vara > 2}}">, the naivetag_str.find('>')call matches the>inside the quoted attribute value instead of the actual tag-closing bracket. This produces malformed output with mismatched tags:<if condition="vara > 2">Over two</f-when>.The fix introduces
find_tag_close()— a quote-aware scanner that skips>characters inside double-quoted attribute values. All tag-closing searches in the FAST parser plugin (convert_if_tag,convert_for_tag,convert_route_tag,convert_complex_attrs,strip_shadowrootmode) now use this function.Test Plan
>,>=, and<operators inconvert_btr_to_fast()find_tag_close()with quoted>characterscargo xtask checkpasses (license-headers, fmt, clippy, test)Checklist