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FF149 Relnote - allow more chars in DOM names/namespaces for elem/attribute methods#43392

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pepelsbey merged 3 commits intomdn:mainfrom
hamishwillee:ff149_relnote_allow_more_chars
Mar 13, 2026
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FF149 Relnote - allow more chars in DOM names/namespaces for elem/attribute methods#43392
pepelsbey merged 3 commits intomdn:mainfrom
hamishwillee:ff149_relnote_allow_more_chars

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@hamishwillee
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FF149 adds support for additional characters to be used in attribute and element names and namespaces in https://bugzilla.mozilla.org/show_bug.cgi?id=1773312. Previoulsy the DOM allowed you to only create them with XML characters, now the rules are less restrictive.

This adds a release note.

Related docs work can be tracked in #43218

@hamishwillee hamishwillee requested a review from a team as a code owner March 10, 2026 03:58
@hamishwillee hamishwillee requested review from pepelsbey and removed request for a team March 10, 2026 03:58
@github-actions github-actions bot added Content:Firefox Content in the Mozilla/Firefox subtree size/s [PR only] 6-50 LoC changed labels Mar 10, 2026
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github-actions bot commented Mar 10, 2026

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URL: /en-US/docs/Mozilla/Firefox/Releases/149
Title: Firefox 149 release notes for developers (Beta)

(comment last updated: 2026-03-13 03:15:55)

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Looks good, thanks!

I would only suggest we keep the same consistent structure for every item: short title, an expanded paragraph, and a link. I think it's already pretty close, but needs some reorganization. It'll make it easier to read.

Co-authored-by: Vadim Makeev <hi@pepelsbey.dev>
@hamishwillee hamishwillee requested a review from pepelsbey March 13, 2026 03:19
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Perfect! Thank you 🙂

@pepelsbey pepelsbey merged commit a517460 into mdn:main Mar 13, 2026
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2 participants