[css-text] Be clear about which aspects of justification space distribution are undefined, fix some markup, be explicit that UAs should update their Appendix C list for future additions of Unicode

Author: fantasai

css-text/Overview.html

@@ -10,7 +10,7 @@
    rel=dcterms.rights>
   <meta content="CSS Text Module Level 3 (CSS3 Text)" name=dcterms.title>
   <meta content=text name=dcterms.type>
-  <meta content=2013-08-20 name=dcterms.date>
+  <meta content=2013-08-22 name=dcterms.date>
   <meta content="Elika J. Etemad" name=dcterms.creator>
   <meta content="Koji Ishii" name=dcterms.creator>
   <meta content=W3C name=dcterms.publisher>
@@ -68,12 +68,12 @@
 
    <h1>CSS Text Module Level 3</h1>
 
-   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 20 August 2013</h2>
+   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 22 August 2013</h2>
 
    <dl>
     <dt>This version:</dt>
     <!--
-    <dd><a href="http://www.w3.org/TR/2013/WD-css3-text-20130820/">http://www.w3.org/TR/2013/WD-css3-text-20130820/</a></dd>
+    <dd><a href="http://www.w3.org/TR/2013/WD-css3-text-20130822/">http://www.w3.org/TR/2013/WD-css3-text-20130822/</a></dd>
 -->
 
     <dd><a
@@ -2330,7 +2330,10 @@ <h4 id=expanding-text><span class=secno>7.3.1. </span> Expanding and
    href="#letter0"><i>letters</i></a> are defined to be at the same level (as
    they are in the ‘<code class=css>distribute</code>’ justification
    style), they are not treated differently because they originate from
-   different <a href="#character"><i>characters</i></a>.
+   different <a href="#character"><i>characters</i></a>. It is not defined in
+   this level whether or how other factors (such as font size,
+   letter-spacing, glyph shape, position within the line, etc.) may influence
+   the distribution of space to expansion opportunities within the line.
 
   <h4 id=justify-symbols><span class=secno>7.3.2. </span> Handling Symbols
    and Punctuation</h4>
@@ -2750,7 +2753,7 @@ <h3 id=letter-spacing><span class=secno>8.2. </span> Tracking: the ‘<a
     style="text-align: right">a b c 
   </div>
 
-  <p> Letter spacing between two <a href="#character"><i>characters</i></a>
+  <p>Letter spacing between two <a href="#character"><i>characters</i></a>
    effectively “belongs” to the innermost element element that contains
    the two <a href="#character"><i>characters</i></a>: the total letter
    spacing between two adjacent <a href="#character"><i>characters</i></a>
@@ -3410,7 +3413,12 @@ <h2 class=no-num id=script-groups> Appendix C: Cursive Scripts</h2>
   <p>The following scripts in Unicode 6 are considered to be <dfn
    id=cursive-scripts>cursive scripts</dfn>, and do not admit <a
    href="#expansion-opportunity"><i>expansion opportunities</i></a> between
-   their letters: Arabic, Mandaic, Mongolian, N'Ko, Phags Pa, Syriac <!--
+   their letters: Arabic, Mandaic, Mongolian, N'Ko, Phags Pa, Syriac
+
+  <p>User agents should update this list as they update their Unicode support
+   to handle as-yet-unencoded cursive scripts in future versions of Unicode,
+   and are encourage to request the CSSWG to update this spec accordingly.
+   <!--
   <p>Typographic behavior varies somewhat by language, but varies drastically
     by writing system. This appendix categorizes some common scripts in
     Unicode 6.0 according to their justification and spacing behavior. Category

css-text/Overview.src.html

@@ -1700,6 +1700,10 @@ <h4 id="expanding-text">
     and between two Latin <i>letters</i> are defined to be at the same level
     (as they are in the ''distribute'' justification style),
     they are not treated differently because they originate from different <i>characters</i>.
+    It is not defined in this level
+    whether or how other factors
+    (such as font size, letter-spacing, glyph shape, position within the line, etc.)
+    may influence the distribution of space to expansion opportunities within the line.
 
 <h4 id="justify-symbols">
 Handling Symbols and Punctuation</h4>
@@ -2028,11 +2032,11 @@ <h3 id="letter-spacing">
     <p class="ls-ex bad ls-fixed-width color-box" style="text-align: right">a&emsp;b&emsp;c&emsp;</p>
   </div>
 
-       Letter spacing between two <i>characters</i> effectively “belongs”
-       to the innermost element element that contains the two <i>characters</i>:
-       the total letter spacing between two adjacent <i>characters</i> (after bidi reordering)
-       is specified by and rendered within
-       the innermost element that <em>contains</em> the boundary between the two <i>characters</i>.
+    <p>Letter spacing between two <i>characters</i> effectively “belongs”
+      to the innermost element element that contains the two <i>characters</i>:
+      the total letter spacing between two adjacent <i>characters</i> (after bidi reordering)
+      is specified by and rendered within
+      the innermost element that <em>contains</em> the boundary between the two <i>characters</i>.
 
   <div class="example">
     <p>A given value of 'letter-spacing' only affects the spacing
@@ -2492,13 +2496,16 @@ <h2 class="no-num" id="script-groups">
   <p><em>This appendix is normative.</em></p>
 
   <p>The following scripts in Unicode 6 are considered to be <dfn>cursive scripts</dfn>,
-  and do not admit <i>expansion opportunities</i> between their letters:
-    Arabic,
-    Mandaic,
-    Mongolian,
-    N'Ko,
-    Phags Pa,
-    Syriac
+    and do not admit <i>expansion opportunities</i> between their letters:
+      Arabic,
+      Mandaic,
+      Mongolian,
+      N'Ko,
+      Phags Pa,
+      Syriac
+  <p>User agents should update this list as they update their Unicode support
+    to handle as-yet-unencoded cursive scripts in future versions of Unicode,
+    and are encourage to request the CSSWG to update this spec accordingly.
 <!--
   <p>Typographic behavior varies somewhat by language, but varies drastically
     by writing system. This appendix categorizes some common scripts in