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Half-Shot
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Sep 10, 2026
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We probably also want to have limits on the rendering side, so clients can't send more than 30 characters to us. I suspect just having it ellipsis is fine.
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I think the MSC should be updated first |
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I've added 30 characters as a guideline max length (matrix-org/matrix-spec-proposals@13b108d): @t3chguy does that seem okay to you? |
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This probably isn't a great way to do this as at least chrome's maxLength appears to be by bytes rather than graphemes, so if you pick the wrong characters, the max length actually looks like this: 
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dbkr
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Sep 15, 2026
Native input maxLength counts UTF-16 code units, so emoji was clipped. Limit composed and received status text by grapheme cluster instead.
dbkr
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Sep 15, 2026
dbkr
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Sep 15, 2026
dbkr
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Sep 15, 2026
Keep the grapheme-aware input limit and 256-byte protocol cap. Drop display-time ellipsis so that can be done with CSS later.
dbkr
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Sep 16, 2026
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Fixes #34983
The custom status editor did not enforce the product's 30-character limit. Add the native maxLength constraint and a regression test.