Closed
Bug 1408366
Opened 8 years ago
Closed 8 years ago
U+034F COMBINING GRAPHEME JOINER breaks shaping in some fonts
Categories
(Core :: Layout: Text and Fonts, enhancement)
Tracking
()
RESOLVED
FIXED
mozilla58
| Tracking | Status | |
|---|---|---|
| firefox58 | --- | fixed |
People
(Reporter: khaled, Assigned: jfkthame)
References
Details
Attachments
(3 files)
Test case rendered in Firefox
It seems that if a font lacks a glyph for U+034F COMBINING GRAPHEME JOINER, Firefox will fallback to a different font and break shaping, but this fallback is unnecessary since HarfBuzz will deal with it just fine.
Test case:
data:text/html;charset=utf8,<p style="font: 100pt Amiri">ىٕ͏ِد</p>
The fonts tab in the developer tools shows that Amiri and another font are used.
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Reporter | |
Comment 1•8 years ago
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Reporter | |
Updated•8 years ago
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See Also: → https://github.com/w3c/alreq/issues/147
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Assignee | |
Comment 2•8 years ago
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Makes sense; we already deal with certain other control characters in this way, allowing them in the run regardless of whether the font explicitly supports them. We should just treat CGJ the same.
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Assignee | |
Comment 3•8 years ago
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Attachment #8918301 -
Flags: review?(jmuizelaar)
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Assignee | |
Updated•8 years ago
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Assignee: nobody → jfkthame
Status: NEW → ASSIGNED
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Updated•8 years ago
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Attachment #8918301 -
Flags: review?(jmuizelaar) → review+
Pushed by jkew@mozilla.com:
https://hg.mozilla.org/integration/mozilla-inbound/rev/b6f55f929971
Unicode combining grapheme joiner (U+034F) should not break the font run. r=jrmuizel
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Comment 5•8 years ago
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| bugherder | ||
Status: ASSIGNED → RESOLVED
Closed: 8 years ago
status-firefox58:
--- → fixed
Resolution: --- → FIXED
Target Milestone: --- → mozilla58
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Description
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