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13894 Use Unicode Segmentation's graphemes

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Add test with multi-character grapheme

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This commit is contained in:
Jesse Kipp 2016-10-23 21:33:25 -04:00
parent bfd966f819
commit 06db231f5f
7 changed files with 32 additions and 1 deletions
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5
components/style/properties/longhand/inherited_text.mako.rs
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@ -741,6 +741,7 @@ ${helpers.single_keyword("text-align-last",
use computed_values::writing_mode::T as writing_mode;
use cssparser::ToCss;
use std::fmt;
use unicode_segmentation::UnicodeSegmentation;
use values::LocalToCss;
use values::NoViewportPercentage;
@ -889,7 +890,9 @@ ${helpers.single_keyword("text-align-last",
},
SpecifiedValue::None => computed_value::T::None,
SpecifiedValue::String(ref s) => {
let string = s.chars().next().as_ref().map(ToString::to_string).unwrap_or_default();
// Passing `true` to iterate over extended grapheme clusters, following
// recommendation at http://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries
let string = s.graphemes(true).next().unwrap_or("").to_string();
computed_value::T::String(string)
}
}