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SVG: read the CSS font-size keywords - #2179
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andersonhc merged 4 commits intoNov 13, 2026
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font-size="large", "x-small", "larger" or "smaller" failed with ValueError: Unable to parse 'large' as a length. The absolute keywords now use the CSS Fonts scale around medium (16px), and larger and smaller scale the inherited size by 1.2, in _resolve_relative_font_size(), so descendants inherit the result.
# Conflicts: # CHANGELOG.md
andersonhc
approved these changes
Nov 13, 2026
# Conflicts: # CHANGELOG.md
# Conflicts: # CHANGELOG.md
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font-size="large","x-small","larger"or"smaller"fails withValueError: Unable to parse 'large' as a length.The absolute keywords now use the CSS Fonts scale around
medium(16px):largeis 6/5 of it andx-small3/4.largerandsmallerscale the inherited size by 1.2, as browsers do. This happens in_resolve_relative_font_size(), next toem,exand%, so descendants inherit the computed size.test_svg_font_size_keywordscovers absolute keywords in an attribute and a style,larger,smaller, andeminside a keyword; all fail without the change.