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fix: Fix hyphenation and rendering of decomposed characters (#1037)
Compile Release / build-release (push) Canceled after 0sbot released this
2026-02-22 02:11:37 +00:00 | 592 commits to develop since this releaseSummary
- This PR fixes decomposed diacritic handling end-to-end:
- Hyphenation: normalize common Latin base+combining sequences to
precomposed codepoints before Liang pattern matching, so decomposed
words hyphenate correctly - Rendering: correct combining-mark placement logic so non-spacing marks
are attached to the preceding base glyph in normal and rotated text
rendering paths, with corresponding text-bounds consistency updates. - Hyphenation around non breaking space variants have been fixed (and
extended) - Hyphenation of terms that already included of hyphens were fixed to
include Liang pattern application (eg "US-Satellitensystem" was
exclusively broken at the existing hyphen)
Additional Context
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Before
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After
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Note 1: the hyphenation fix is not a 100% bullet proof implementation.
It adds composition of common base+combining sequences (e.g. O +
U+0308 -> Ö) during codepoint collection. A complete solution would
require implementing proper Unicode normalization (at least NFC,
possibly NFKC in specific cases) before hyphenation and rendering,
instead of hand-mapping a few combining marks. That was beyond the scope
of this fix. -
Note 2: the render fix should be universal and not limited to the
constraints outlined above: it properly x-centers the compund glyph over
the previous one, and it uses at least 1pt of visual distance in y.
Before:
After:
- This should resolve the issues described in #998
AI Usage
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