selectors: Don't serialize :nth-child(-n) as -1n.

servo · Apr 7, 2018 · 1eab592 · 1eab592
1 parent ecf71d7
commit 1eab592
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Showing 2 changed files with 1 addition and 25 deletions.
diff --git a/components/selectors/parser.rs b/components/selectors/parser.rs
@@ -1021,6 +1021,7 @@ impl<Impl: SelectorImpl> ToCss for Component<Impl> {
                 (0, 0) => dest.write_char('0'),
 
                 (1, 0) => dest.write_char('n'),
+                (-1, 0) => dest.write_str("-n"),
                 (_, 0) => write!(dest, "{}n", a),
 
                 (0, _) => write!(dest, "{}", b),

diff --git a/tests/wpt/metadata/css/selectors/anplusb-selector-parsing.html.ini b/tests/wpt/metadata/css/selectors/anplusb-selector-parsing.html.ini