backport CSS2.1 Issues-3#140

Author: fantasai

css3-text/Overview.src.html

@@ -562,6 +562,9 @@ <h3 id="white-space-rules"><span class="secno">3.2.</span>
         starting content edge.</li>
       <li>A sequence of collapsible spaces (U+0020) at the end of a line
         is removed.</li>
+      <li>If spaces (U+0020) or tabs (U+0009) at the end of a line are
+        non-collapsible but have 'text-wrap' set to 'normal' or 'suppress'
+        the UA may visually collapse them.
     </ol>
 
     <div class="example">
@@ -775,6 +778,11 @@ <h2 id="line-breaking"><span class="secno">4.</span>
     Additionally the level of strictness in these restrictions can vary
     with the typesetting style.</p>
 
+  <p class="issue">Specify that out-of-flow elements do not introduce line
+   breaking opportunities. Specify whether images introduce line breaking
+   opportunities. Specify that CSS3 Text does not otherwise specify line
+   breaking opportunities.</p>
+
   <h3 id="word-break"><span class="secno">4.1.</span>
     Line Breaking Restrictions: the 'word-break' property</h3>