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base repository: mattn/go-runewidth
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base: v0.0.22
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head repository: mattn/go-runewidth
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compare: v0.0.23
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  • 2 commits
  • 1 file changed
  • 1 contributor

Commits on Apr 8, 2026

  1. Optimize RuneWidth and StringWidth performance 

    - Merge combining+nonprint into a single zerowidth table at init,
  reducing two binary searches to one for zero-width rune detection
- Merge ambiguous+doublewidth into widewidth table for EastAsian path
- Remove redundant narrow table check in non-EastAsian path
- Eliminate inTables variadic function overhead by using direct calls
- Simplify EastAsian StrictEmojiNeutral dead code path
- Add ASCII fast path in StringWidth to bypass grapheme segmenter
- Use strings.Builder in Wrap to avoid O(n²) string concatenation

Benchstat (8 samples):

  RuneWidthAll/regular         -34.49%
  RuneWidthAllEastAsian/regular -44.79%
  String1WidthAll/regular      -25.53%
  geomean                      -17.69%
    @mattn
    mattn committed Apr 8, 2026
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  2. Merge pull request #95 from mattn/optimize-runewidth-performance 

    Optimize RuneWidth and StringWidth performance
    @mattn
    mattn authored Apr 8, 2026
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    17a7a03 View commit details
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