[css-pseudo-4] Intervening spaces are included in ::first-letter along with the adjacent punctuation. #5154

Author: fantasai

css-pseudo-4/Overview.bs

@@ -235,7 +235,10 @@ The ::first-letter pseudo-element</h3>
   </div>
 
   Punctuation (i.e, characters that belong to the Punctuation (<code>P*</code>) <a>Unicode general category</a> [[!UAX44]])
-  that precedes or follows the first <a>typographic letter unit</a> must also be included
+  that precedes or follows the first <a>typographic letter unit</a>
+  and any intervening space separators
+  (characters that belong to the <code>Zs</code> Unicode general category [[!UAX44]])
+  must also be included
   in the ''::first-letter'' pseudo-element.
 
   <div class="figure">
@@ -967,6 +970,8 @@ Changes</h2>
   Changes since the <a href="https://www.w3.org/TR/2019/WD-css-pseudo-4-20190225/">25 February 2019 Working Draft</a> include:
 
   <ul>
+    <li>Included spaces between the first letter and its surrounding punctuation in ''::first-letter''.
+    (<a href="https://github.com/w3c/csswg-drafts/issues/5154">Issue 5154</a>)
     <li>Added ''::marker'' to types allowed for {{CSSPseudoElement}} interface.
     <li>Clarified return value of {{pseudo()}}.
     <li>Added 'content', 'unicode-bidi', and 'direction' to properties allowed on ''::marker''.