[css-text-3] Check language on segment break, not Ambiguous character, and restrict Ambiguous characters we care about to punctuation/symbols. #337

Author: fantasai

css-text-3/Overview.bs

@@ -683,9 +683,11 @@ Characters and Letters</h3>
           the character before and after the segment break is <code>F</code>,
           <code>W</code>, or <code>H</code> (not <code>A</code>),
           and neither side is Hangul, then the segment break is removed.
-        <li>Otherwise, if the <a>East Asian Width property</a> [[!UAX11]] of either
-          the character before or after the segment break is <code>A</code>
-          and that character’s <a>content language</a> is Chinese, Japanese, or Yi,
+        <li>Otherwise, if the <a>content language</a> of the <a>segment break</a>
+          is Chinese, Japanese, or Yi,
+          and the character before or after the segment break
+          is punctuation or a symbol (Unicode <a>general category</a> P* or S*)
+          and has an <a>East Asian Width property</a> of <code>A</code>,
           and the character on the other side of the segment break is
           <code>F</code>, <code>W</code>, or <code>H</code>,
           and not Hangul, then the segment break is removed.