W3C home > Mailing lists > Public > public-css-commits@w3.org > April 2011

csswg/css3-text Overview.html,1.113,1.114 Overview.src.html,1.211,1.212

From: Elika Etemad via cvs-syncmail <cvsmail@w3.org>
Date: Wed, 20 Apr 2011 01:59:58 +0000
To: public-css-commits@w3.org
Message-Id: <E1QCMhy-0002Wt-Cn@lionel-hutz.w3.org>
Update of /sources/public/csswg/css3-text
In directory hutz:/tmp/cvs-serv9704

Modified Files:
	Overview.html Overview.src.html 
Log Message:
Add 'none' and 'space-adjacent' values to 'text-spacing'. Shuffle around some prose to make it flow better

Index: Overview.html
===================================================================
RCS file: /sources/public/csswg/css3-text/Overview.html,v
retrieving revision 1.113
retrieving revision 1.114
diff -u -d -r1.113 -r1.114
--- Overview.html	20 Apr 2011 00:49:20 -0000	1.113
+++ Overview.html	20 Apr 2011 01:59:56 -0000	1.114
@@ -89,7 +89,7 @@
     <dt>This version:
 
     <dd><a href="http://dev.w3.org/csswg/css3-text/Overview.html">$Date:
-     2011/04/19 18:25:14 $ (CVS $Revision$)</a> <!--
+     2011/04/20 00:49:23 $ (CVS $Revision$)</a> <!--
       <dd><a href="http://www.w3.org/TR/2011/WD-css3-text-20110420/">http://www.w3.org/TR/2011/WD-css3-text-20110420/</a></dd>
     -->
      
@@ -3539,8 +3539,9 @@
     <tr>
      <th>Value:
 
-     <td>normal | trim-start || [ trim-end | space-end ] || no-justify ||
-      ideograph-alpha || ideograph-numeric || punctuation
+     <td>normal | none | trim-start || [ trim-end | space-end ] ||
+      space-adjacent || no-justify || ideograph-alpha || ideograph-numeric ||
+      punctuation
 
     <tr>
      <th>Initial:
@@ -3573,10 +3574,14 @@
      <td>specified value
   </table>
 
-  <p>This property controls spacing between adjacent characters within the
-   same inline formatting context using a set of character-class-based rules.
-   Such spacing can either be created between or trimmed from the affected
-   glyphs. Values are defined as follows:
+  <p>This property controls spacing between adjacent characters on the same
+   line within the same inline formatting context using a set of
+   character-class-based rules. Such spacing can either be created between or
+   trimmed from the affected glyphs. Values other than &lsquo;<code
+   class=css>normal</code>&rsquo; and &lsquo;<code
+   class=css>none</code>&rsquo; modify (override) the baseline behavior
+   defined for &lsquo;<code class=css>normal</code>&rsquo;. Values are
+   defined as follows:
 
   <dl>
    <dt><dfn id=normal5 title="text-spacing:normal">normal</dfn>
@@ -3584,6 +3589,14 @@
    <dd>Specifies the baseline behavior (defined below).
     <!-- Equivalent to ''space-start allow-end justify'' -->
 
+   <dt><dfn id=none3 title="text-spacing:none">none</dfn>
+
+   <dt>
+
+   <dd>Turns off all text-spacing features. All fullwidth characters are set
+    at full width. <span class=issue>Should this value include &lsquo;<code
+    class=css>no-justify</code>&rsquo; behavior?</span>
+
    <dt><dfn id=trim-start title="text-spacing:trim-start">trim-start</dfn>
 
    <dd>Set fullwidth opening punctuation flush at the start of each line. The
@@ -3592,7 +3605,7 @@
       <dt><dfn title="text-spacing:space-start">space-start</dfn></dt>
         <dd>Set fullwidth opening punctuation at full width at the start
           of each line. The UA must blank space to fullwidth
-          punctuation if they are not already full width.
+          punctuation glyphs if they are not already full width.
       -->
     <!--
       <dt><dfn title="text-spacing:allow-end">allow-end</dfn></dt>
@@ -3611,29 +3624,33 @@
    <dt><dfn id=space-end title="text-spacing:space-end">space-end</dfn>
 
    <dd>Set fullwidth opening punctuation at full width at the start of each
-    line. The UA must add blank space to fullwidth punctuation if they are
-    not already full width.
+    line. The UA must add blank space to fullwidth punctuation glyphs if they
+    are not already full width.
+
+   <dt><dfn id=space-adjacent
+    title="text-spacing:space-adjacent">space-adjacent</dfn>
+
+   <dd>Set fullwidth opening punctuation at full width when not at the start
+    of the line. Set fullwidth closing punctuation at full width when not at
+    the end of the line. The UA must add blank space to such fullwidth
+    punctuation glyphs if they are not already full width.
 
    <dt><dfn id=ideograph-alpha
     title="text-spacing:ideograph-alpha">ideograph-alpha</dfn>
 
    <dd>Creates 1/4em extra spacing between runs of ideographic letters and
     non-ideographic letters, such as Latin-based, Cyrillic, Greek, Arabic or
-    Hebrew. Unless &lsquo;<code class=css>no-justify</code>&rsquo; is also
-    specified, this autospacing may be altered by the justification process.
-    <span class=note>A commonly used algorithm for determining this behavior
-    is specified in <a href="#JLREQ"
+    Hebrew. <span class=note>A commonly used algorithm for determining this
+    behavior is specified in <a href="#JLREQ"
     rel=biblioentry>[JLREQ]<!--{{JLREQ}}--></a></span>
 
    <dt><dfn id=ideograph-numeric
     title="text-spacing:ideograph-numeric">ideograph-numeric</dfn>
 
    <dd>Creates 1/4em extra spacing between runs of ideographic letters and
-    non-ideographic numeric glyphs. Unless &lsquo;<code
-    class=css>no-justify</code>&rsquo; is also specified, this autospacing
-    may be altered by the justification process. <span class=note>A commonly
-    used algorithm for determining this behavior is specified in <a
-    href="#JLREQ" rel=biblioentry>[JLREQ]<!--{{JLREQ}}--></a></span>
+    non-ideographic numeric glyphs. <span class=note>A commonly used
+    algorithm for determining this behavior is specified in <a href="#JLREQ"
+    rel=biblioentry>[JLREQ]<!--{{JLREQ}}--></a></span>
 
    <dt><dfn id=punctuation title="text-spacing:punctuation">punctuation</dfn>
     
@@ -3649,10 +3666,10 @@
    <dt><dfn id=no-justify title="text-spacing:no-justify">no-justify</dfn>
 
    <dd>Justification may not alter text-spacing. (If this value is not
-    specified, the justification process may alter autospacing.) <span
-    class=note> An example of compression rules is given for Japanese in 3.8
-    Line Adjustment in <a href="#JLREQ"
-    rel=biblioentry>[JLREQ]<!--{{JLREQ}}--></a>.</span>
+    specified, the justification process may alter autospacing except when
+    the spacing is at the start or end of the line.) <span class=note> An
+    example of compression rules is given for Japanese in 3.8 Line Adjustment
+    in <a href="#JLREQ" rel=biblioentry>[JLREQ]<!--{{JLREQ}}--></a>.</span>
   </dl>
 
   <p>In the baseline behavior the UA must:
@@ -3660,101 +3677,40 @@
   <ul>
    <li>Set fullwidth opening punctuation at full width at the start of each
     line. (This can require adding space to punctuation glyphs.) This
-    behavior can be overridden by specifying &lsquo;<code
-    class=css>trim-start</code>&rsquo;.
+    behavior is overridden when &lsquo;<code
+    class=css>trim-start</code>&rsquo; is specified.
 
    <li>Set fullwidth closing punctuation flush at the end of each line if it
     does not otherwise fit prior to justification. (This can require trimming
-    the blank half of fullwidth punctuation glyphs.) This behavior can be
-    overridden by specifying &lsquo;<code class=css>space-end</code>&rsquo;
-    or &lsquo;<code class=css>trim-end</code>&rsquo;.
+    the blank half of fullwidth punctuation glyphs.) This behavior is
+    overridden when &lsquo;<code class=css>trim-end</code>&rsquo; or
+    &lsquo;<code class=css>space-end</code>&rsquo; is specified.
 
    <li>Set fullwidth opening punctuation at half width if the previous
     character is a fullwidth opening punctuation, fullwidth middle dot
     punctuation, fullwidth closing punctuation, or ideographic space
-    (U+3000). Else set it at full width and, unless &lsquo;<code
-    class=css>no-justify</code>&rsquo; is specified, allow justification to
-    alter this spacing.
+    (U+3000). Else set it at full width. This behavior is overridden when
+    &lsquo;<code class=css>space-adjacent</code>&rsquo; is specified.
 
    <li>Set fullwidth closing punctuation at half width if the previous
     character is a fullwidth closing punctuation, fullwidth middle dot
-    punctuation, or ideographic space (U+3000). Else set it at full width
-    and, unless &lsquo;<code class=css>no-justify</code>&rsquo; is specified,
-    allow justification to alter this spacing.
+    punctuation, or ideographic space (U+3000). Else set it at full width.
+    This behavior is overridden when &lsquo;<code
+    class=css>space-adjacent</code>&rsquo; is specified.
   </ul>
 
-  <p>Depending on the font system, text-spacing may require either trimming
-   (kerning) the blank half of fullwidth punctuation glyphs (if they must be
-   set flush / at half width), or adding 1/2em of space to the glyphs (if
-   they must be set at full width). When set at full width
-
-  <div class=example>
-   <p>The following example table lists the punctuation pairs affected by
-    adjancent-pairs trimming. It uses halfwidth equivalents to approximate
-    the trimming effect.</p>
-
-   <table class=data>
-    <caption>Demonstration of adjacent-pairs punctuation trimming</caption>
-
-    <thead>
-     <tr>
-      <th>Combination
-
-      <th>Sample Pair
-
-      <th>Looks Like
-
-    <tbody>
-     <tr>
-      <th>Opening&#8212;Opening
-
-      <td><tt class=char lang=ja>〔</tt>+<tt class=char lang=ja>(</tt>
-
-      <td><tt class=char lang=ja>〔</tt><tt class=char lang=ja>(</tt>
-
-     <tr>
-      <th>Middle Dot&#8212;Opening
-
-      <td><tt class=char lang=ja>・</tt>+<tt class=char lang=ja>(</tt>
-
-      <td><tt class=char lang=ja>・</tt><tt class=char lang=ja>(</tt>
-
-     <tr>
-      <th>Closing&#8212;Opening
-
-      <td><tt class=char lang=ja>〕</tt>+<tt class=char lang=ja>(</tt>
-
-      <td><tt class=char lang=ja>〕</tt><tt class=char lang=ja>(</tt>
-
-     <tr>
-      <th>Ideographic Space&#8212;Opening
-
-      <td><tt class=char lang=ja> </tt>+<tt class=char lang=ja>(</tt>
-
-      <td><tt class=char lang=ja> </tt><tt class=char lang=ja>(</tt>
-
-     <tr>
-      <th>Closing&#8212;Closing
-
-      <td><tt class=char lang=ja>)</tt>+<tt class=char lang=ja>〕</tt>
-
-      <td><tt class=char lang=ja>)</tt><tt class=char lang=ja>〕</tt>
-
-     <tr>
-      <th>Closing&#8212;Middle Dot
-
-      <td><tt class=char lang=ja>)</tt>+<tt class=char lang=ja>・</tt>
-
-      <td><tt class=char lang=ja>)</tt><tt class=char lang=ja>・</tt>
-
-     <tr>
-      <th>Closing&#8212;Ideographic Space
+  <p>A fullwidth glyph is one that has the same advance width as a typical
+   Han character in the same font. Typically fullwidth characters have
+   fullwidth glyphs, but depending on the font system, text-spacing may
+   require either:
 
-      <td><tt class=char lang=ja>)</tt>+<tt class=char lang=ja> </tt>
+  <ul>
+   <li>trimming (kerning) the blank half of fullwidth glyphs if they must be
+    set flush / at half width, or
 
-      <td><tt class=char lang=ja>)</tt><tt class=char lang=ja> </tt>
-   </table>
-  </div>
+   <li>adding space (typically 1/2em) to half-width glyphs if they must be
+    set at full width.
+  </ul>
 
   <p>In the context of this property the following definitions apply:
 
@@ -3847,10 +3803,73 @@
     </ul>
   </dl>
 
-  <p>Fullwidth punctuation must not be trimmed if the glyph is not actually
-   fullwidth. This includes the case where the glyph is not fullwidth as a
-   result of the kerning in the font. A fullwidth glyph is one that has the
-   same advance width as a typical Han character in the same font.
+  <div class=example>
+   <p>The following example table lists the punctuation pairs affected by
+    adjancent-pairs trimming. It uses halfwidth equivalents to approximate
+    the trimming effect.</p>
+
+   <table class=data>
+    <caption>Demonstration of adjacent-pairs punctuation trimming</caption>
+
+    <thead>
+     <tr>
+      <th>Combination
+
+      <th>Sample Pair
+
+      <th>Looks Like
+
+    <tbody>
+     <tr>
+      <th>Opening&#8212;Opening
+
+      <td><tt class=char lang=ja>〔</tt>+<tt class=char lang=ja>(</tt>
+
+      <td><tt class=char lang=ja>〔</tt><tt class=char lang=ja>(</tt>
+
+     <tr>
+      <th>Middle Dot&#8212;Opening
+
+      <td><tt class=char lang=ja>・</tt>+<tt class=char lang=ja>(</tt>
+
+      <td><tt class=char lang=ja>・</tt><tt class=char lang=ja>(</tt>
+
+     <tr>
+      <th>Closing&#8212;Opening
+
+      <td><tt class=char lang=ja>〕</tt>+<tt class=char lang=ja>(</tt>
+
+      <td><tt class=char lang=ja>〕</tt><tt class=char lang=ja>(</tt>
+
+     <tr>
+      <th>Ideographic Space&#8212;Opening
+
+      <td><tt class=char lang=ja> </tt>+<tt class=char lang=ja>(</tt>
+
+      <td><tt class=char lang=ja> </tt><tt class=char lang=ja>(</tt>
+
+     <tr>
+      <th>Closing&#8212;Closing
+
+      <td><tt class=char lang=ja>)</tt>+<tt class=char lang=ja>〕</tt>
+
+      <td><tt class=char lang=ja>)</tt><tt class=char lang=ja>〕</tt>
+
+     <tr>
+      <th>Closing&#8212;Middle Dot
+
+      <td><tt class=char lang=ja>)</tt>+<tt class=char lang=ja>・</tt>
+
+      <td><tt class=char lang=ja>)</tt><tt class=char lang=ja>・</tt>
+
+     <tr>
+      <th>Closing&#8212;Ideographic Space
+
+      <td><tt class=char lang=ja>)</tt>+<tt class=char lang=ja> </tt>
+
+      <td><tt class=char lang=ja>)</tt><tt class=char lang=ja> </tt>
+   </table>
+  </div>
 
   <p>Whether fullwidth colon punctuation and fullwidth dot punctuation should
    be considered fullwidth closing punctuation or fullwidth middle dot
@@ -4169,7 +4188,7 @@
   <p>Values have the following meanings:
 
   <dl>
-   <dt><dfn id=none3 title="hanging-punctuation:none"><code>none</code></dfn>
+   <dt><dfn id=none4 title="hanging-punctuation:none"><code>none</code></dfn>
 
    <dd>No characters can hang.
 
@@ -4410,7 +4429,7 @@
    Values have the following meanings:
 
   <dl>
-   <dt><dfn id=none4 title="text-decoration-line:none">none</dfn>
+   <dt><dfn id=none5 title="text-decoration-line:none">none</dfn>
 
    <dd>Neither produces nor inhibits text decoration.
 
@@ -4693,7 +4712,7 @@
    drawn by its ancestors. Values have the following meanings:
 
   <dl>
-   <dt><dfn id=none5 title="text-decoration-skip:none">none</dfn>
+   <dt><dfn id=none6 title="text-decoration-skip:none">none</dfn>
 
    <dd>Skip nothing: text-decoration is drawn for all text content and for
     inline replaced elements.
@@ -4912,7 +4931,7 @@
    the following meanings:
 
   <dl>
-   <dt><dfn id=none6 title="text-emphasis:none"><code>none</code></dfn>
+   <dt><dfn id=none7 title="text-emphasis:none"><code>none</code></dfn>
 
    <dd>No emphasis marks.
 
@@ -6460,8 +6479,9 @@
         <tr valign=baseline>
          <td><a class=property href="#text-spacing">text-spacing</a>
 
-         <td>normal | trim-start || [ trim-end | space-end ] || no-justify ||
-          ideograph-alpha || ideograph-numeric || punctuation
+         <td>normal | none | trim-start || [ trim-end | space-end ] ||
+          space-adjacent || no-justify || ideograph-alpha ||
+          ideograph-numeric || punctuation
 
          <td>normal
 
@@ -6687,7 +6707,7 @@
        <li>hanging-punctuation:force-end, <a href="#force-end"
         title="hanging-punctuation:force-end"><strong>10.2.</strong></a>
 
-       <li>hanging-punctuation:none, <a href="#none3"
+       <li>hanging-punctuation:none, <a href="#none4"
         title="hanging-punctuation:none"><strong>10.2.</strong></a>
 
        <li>hyphenate-character, <a href="#hyphenate-character0"
@@ -6826,7 +6846,7 @@
        <li>text-decoration-line, <a href="#text-decoration-line0"
         title=text-decoration-line><strong>11.1.1.</strong></a>
 
-       <li>text-decoration-line:none, <a href="#none4"
+       <li>text-decoration-line:none, <a href="#none5"
         title="text-decoration-line:none"><strong>11.1.1.</strong></a>
 
        <li>text-decoration-skip, <a href="#text-decoration-skip0"
@@ -6838,7 +6858,7 @@
        <li>text-decoration-skip:ink, <a href="#ink"
         title="text-decoration-skip:ink"><strong>11.1.5.</strong></a>
 
-       <li>text-decoration-skip:none, <a href="#none5"
+       <li>text-decoration-skip:none, <a href="#none6"
         title="text-decoration-skip:none"><strong>11.1.5.</strong></a>
 
        <li>text-decoration-skip:objects, <a href="#objects"
@@ -6877,7 +6897,7 @@
        <li>text-emphasis:left, <a href="#left0"
         title="text-emphasis:left"><strong>11.2.4.</strong></a>
 
-       <li>text-emphasis:none, <a href="#none6"
+       <li>text-emphasis:none, <a href="#none7"
         title="text-emphasis:none"><strong>11.2.1.</strong></a>
 
        <li>text-emphasis:open, <a href="#open"
@@ -6945,12 +6965,18 @@
        <li>text-spacing:no-justify, <a href="#no-justify"
         title="text-spacing:no-justify"><strong>9.3.</strong></a>
 
+       <li>text-spacing:none, <a href="#none3"
+        title="text-spacing:none"><strong>9.3.</strong></a>
+
        <li>text-spacing:normal, <a href="#normal5"
         title="text-spacing:normal"><strong>9.3.</strong></a>
 
        <li>text-spacing:punctuation, <a href="#punctuation"
         title="text-spacing:punctuation"><strong>9.3.</strong></a>
 
+       <li>text-spacing:space-adjacent, <a href="#space-adjacent"
+        title="text-spacing:space-adjacent"><strong>9.3.</strong></a>
+
        <li>text-spacing:space-end, <a href="#space-end"
         title="text-spacing:space-end"><strong>9.3.</strong></a>
 

Index: Overview.src.html
===================================================================
RCS file: /sources/public/csswg/css3-text/Overview.src.html,v
retrieving revision 1.211
retrieving revision 1.212
diff -u -d -r1.211 -r1.212
--- Overview.src.html	20 Apr 2011 00:49:23 -0000	1.211
+++ Overview.src.html	20 Apr 2011 01:59:56 -0000	1.212
@@ -2614,9 +2614,10 @@
         </tr>
         <tr>
           <th>Value:</th>
-          <td>normal |
+          <td>normal | none |
               trim-start ||
               [ trim-end | space-end ] ||
+              space-adjacent ||
               no-justify ||
               ideograph-alpha ||
               ideograph-numeric ||
@@ -2650,17 +2651,23 @@
       </tbody>
     </table>
 
-    <p>This property controls spacing between adjacent characters
-      within the same inline formatting context using a set of
+    <p>This property controls spacing between adjacent characters on the
+      same line within the same inline formatting context using a set of
       character-class-based rules.
       Such spacing can either be created between or trimmed from the
       affected glyphs.
+      Values other than ''normal'' and ''none'' modify (override)
+      the baseline behavior defined for ''normal''.
       Values are defined as follows:</p>
 
     <dl>
       <dt><dfn title="text-spacing:normal">normal</dfn></dt>
         <dd>Specifies the baseline behavior (defined below).
           <!-- Equivalent to ''space-start allow-end justify'' -->
+      <dt><dfn title="text-spacing:none">none</dfn><dt>
+        <dd>Turns off all text-spacing features. All fullwidth characters
+          are set at full width.
+          <span class="issue">Should this value include ''no-justify'' behavior?</span>
       <dt><dfn title="text-spacing:trim-start">trim-start</dfn></dt>
         <dd>Set fullwidth opening punctuation flush at the start of each
           line. The UA must trim the blank half of fullwidth punctuation
@@ -2669,7 +2676,7 @@
       <dt><dfn title="text-spacing:space-start">space-start</dfn></dt>
         <dd>Set fullwidth opening punctuation at full width at the start
           of each line. The UA must blank space to fullwidth
-          punctuation if they are not already full width.
+          punctuation glyphs if they are not already full width.
       -->
       <!--
       <dt><dfn title="text-spacing:allow-end">allow-end</dfn></dt>
@@ -2685,21 +2692,23 @@
       <dt><dfn title="text-spacing:space-end">space-end</dfn></dt>
         <dd>Set fullwidth opening punctuation at full width at the start
           of each line. The UA must add blank space to fullwidth
-          punctuation if they are not already full width.</dd>
+          punctuation glyphs if they are not already full width.</dd>
+      <dt><dfn title="text-spacing:space-adjacent">space-adjacent</dfn></dt>
+        <dd>Set fullwidth opening punctuation at full width when not at the
+          start of the line. Set fullwidth closing punctuation at full width
+          when not at the end of the line. The UA must add blank space to
+          such fullwidth punctuation glyphs if they are not already full
+          width.
       <dt><dfn title="text-spacing:ideograph-alpha">ideograph-alpha</dfn></dt>
         <dd>Creates 1/4em extra spacing between runs of ideographic letters and
           non-ideographic letters, such as Latin-based, Cyrillic, Greek,
           Arabic or Hebrew.
-          Unless ''no-justify'' is also specified, this autospacing may
-          be altered by the justification process.
           <span class="note">A commonly used algorithm for determining this
             behavior is specified in [[JLREQ]]</span>
         </dd>
       <dt><dfn title="text-spacing:ideograph-numeric">ideograph-numeric</dfn></dt>
         <dd>Creates 1/4em extra spacing between runs of ideographic letters and
           non-ideographic numeric glyphs.
-          Unless ''no-justify'' is also specified, this autospacing may
-          be altered by the justification process.
           <span class="note">A commonly used algorithm for determining this
             behavior is specified in [[JLREQ]]</span>
         </dd>
@@ -2714,7 +2723,8 @@
           may add automatic spacing behavior for other languages.
       <dt><dfn title="text-spacing:no-justify">no-justify</dfn></dt>
         <dd>Justification may not alter text-spacing. (If this value is not
-           specified, the justification process may alter autospacing.)
+           specified, the justification process may alter autospacing except
+           when the spacing is at the start or end of the line.)
         <span class="note">
           An example of compression rules is given for Japanese in
           3.8 Line Adjustment in [[JLREQ]].</span>
@@ -2725,70 +2735,35 @@
     <ul>
       <li>Set fullwidth opening punctuation at full width at the start
         of each line. (This can require adding space to punctuation glyphs.)
-        This behavior can be overridden by specifying ''trim-start''.
+        This behavior is overridden when ''trim-start'' is specified.
       <li>Set fullwidth closing punctuation flush at the end of each
         line if it does not otherwise fit prior to justification.
         (This can require trimming the blank half of fullwidth punctuation
-        glyphs.) This behavior can be overridden by specifying ''space-end''
-        or ''trim-end''.
+        glyphs.)
+        This behavior is overridden when ''trim-end'' or ''space-end''
+        is specified.
       <li>Set fullwidth opening punctuation at half width if the previous
         character is a fullwidth opening punctuation, fullwidth middle dot
         punctuation, fullwidth closing punctuation, or ideographic space
-        (U+3000). Else set it at full width and, unless ''no-justify'' is
-        specified, allow justification to alter this spacing.
+        (U+3000). Else set it at full width.
+        This behavior is overridden when ''space-adjacent'' is specified.
       <li>Set fullwidth closing punctuation at half width if the previous
         character is a fullwidth closing punctuation, fullwidth middle dot
         punctuation, or ideographic space (U+3000). Else set it at full
-        width and, unless ''no-justify'' is specified, allow justification
-        to alter this spacing.
+        width.
+        This behavior is overridden when ''space-adjacent'' is specified.
     </ul>
 
-    <p>Depending on the font system, text-spacing may require either
-      trimming (kerning) the blank half of fullwidth punctuation glyphs
-      (if they must be set flush / at half width), or adding 1/2em of
-      space to the glyphs (if they must be set at full width). When set
-      at full width</p>
-
-    <div class="example">
-      <p>The following example table lists the punctuation pairs affected by
-        adjancent-pairs trimming. It uses halfwidth equivalents to approximate
-        the trimming effect.</p>
-      <table class="data">
-        <caption>Demonstration of adjacent-pairs punctuation trimming</caption>
-        <thead>
-          <tr><th>Combination</th> <th>Sample Pair</th> <th>Looks Like</th>
-        </thead>
-
-        <tbody>
-          <tr><th>Opening&#8212;Opening</th>
-              <td><tt lang="ja" class="char">〔</tt>+<tt lang="ja" class="char">(</tt>
-              <td><tt lang="ja" class="char">〔</tt><tt lang="ja" class="char">(</tt>
-          <tr><th>Middle Dot&#8212;Opening</th>
-
-              <td><tt lang="ja" class="char">・</tt>+<tt lang="ja" class="char">(</tt>
-              <td><tt lang="ja" class="char">・</tt><tt lang="ja" class="char">(</tt>
-          <tr><th>Closing&#8212;Opening</th>
-              <td><tt lang="ja" class="char">〕</tt>+<tt lang="ja" class="char">(</tt>
-
-              <td><tt lang="ja" class="char">〕</tt><tt lang="ja" class="char">(</tt>
-          <tr><th>Ideographic Space&#8212;Opening</th>
-              <td><tt lang="ja" class="char"> </tt>+<tt lang="ja" class="char">(</tt>
-              <td><tt lang="ja" class="char"> </tt><tt lang="ja" class="char">(</tt>
-
-          <tr><th>Closing&#8212;Closing</th>
-              <td><tt lang="ja" class="char">)</tt>+<tt lang="ja" class="char">〕</tt>
-              <td><tt lang="ja" class="char">)</tt><tt lang="ja" class="char">〕</tt>
-          <tr><th>Closing&#8212;Middle Dot</th>
-
-              <td><tt lang="ja" class="char">)</tt>+<tt lang="ja" class="char">・</tt>
-              <td><tt lang="ja" class="char">)</tt><tt lang="ja" class="char">・</tt>
-          <tr><th>Closing&#8212;Ideographic Space</th>
-              <td><tt lang="ja" class="char">)</tt>+<tt lang="ja" class="char"> </tt>
-
-              <td><tt lang="ja" class="char">)</tt><tt lang="ja" class="char"> </tt>
-        </tbody>
-      </table>
-    </div>
+    <p>A fullwidth glyph is one that has the same advance width as a
+      typical Han character in the same font. Typically fullwidth characters
+      have fullwidth glyphs, but depending on the font system, text-spacing
+      may require either:
+    <ul>
+      <li>trimming (kerning) the blank half of fullwidth glyphs if they
+        must be set flush / at half width, or
+      <li>adding space (typically 1/2em) to half-width glyphs if they
+        must be set at full width.
+    </ul>
 
     <p>In the context of this property the following definitions apply:</p>
     <p class="issue">classes and Unicode code point should be reviewed.</p>
@@ -2852,10 +2827,46 @@
       </dd>
     </dl>
 
-    <p>Fullwidth punctuation must not be trimmed if the glyph is not actually
-      fullwidth. This includes the case where the glyph is not fullwidth
-      as a result of the kerning in the font. A fullwidth glyph is one that
-      has the same advance width as a typical Han character in the same font.</p>
+    <div class="example">
+      <p>The following example table lists the punctuation pairs affected by
+        adjancent-pairs trimming. It uses halfwidth equivalents to approximate
+        the trimming effect.</p>
+      <table class="data">
+        <caption>Demonstration of adjacent-pairs punctuation trimming</caption>
+        <thead>
+          <tr><th>Combination</th> <th>Sample Pair</th> <th>Looks Like</th>
+        </thead>
+
+        <tbody>
+          <tr><th>Opening&#8212;Opening</th>
+              <td><tt lang="ja" class="char">〔</tt>+<tt lang="ja" class="char">(</tt>
+              <td><tt lang="ja" class="char">〔</tt><tt lang="ja" class="char">(</tt>
+          <tr><th>Middle Dot&#8212;Opening</th>
+
+              <td><tt lang="ja" class="char">・</tt>+<tt lang="ja" class="char">(</tt>
+              <td><tt lang="ja" class="char">・</tt><tt lang="ja" class="char">(</tt>
+          <tr><th>Closing&#8212;Opening</th>
+              <td><tt lang="ja" class="char">〕</tt>+<tt lang="ja" class="char">(</tt>
+
+              <td><tt lang="ja" class="char">〕</tt><tt lang="ja" class="char">(</tt>
+          <tr><th>Ideographic Space&#8212;Opening</th>
+              <td><tt lang="ja" class="char"> </tt>+<tt lang="ja" class="char">(</tt>
+              <td><tt lang="ja" class="char"> </tt><tt lang="ja" class="char">(</tt>
+
+          <tr><th>Closing&#8212;Closing</th>
+              <td><tt lang="ja" class="char">)</tt>+<tt lang="ja" class="char">〕</tt>
+              <td><tt lang="ja" class="char">)</tt><tt lang="ja" class="char">〕</tt>
+          <tr><th>Closing&#8212;Middle Dot</th>
+
+              <td><tt lang="ja" class="char">)</tt>+<tt lang="ja" class="char">・</tt>
+              <td><tt lang="ja" class="char">)</tt><tt lang="ja" class="char">・</tt>
+          <tr><th>Closing&#8212;Ideographic Space</th>
+              <td><tt lang="ja" class="char">)</tt>+<tt lang="ja" class="char"> </tt>
+
+              <td><tt lang="ja" class="char">)</tt><tt lang="ja" class="char"> </tt>
+        </tbody>
+      </table>
+    </div>
 
     <p>Whether fullwidth colon punctuation and fullwidth dot punctuation should
       be considered fullwidth closing punctuation or fullwidth middle dot
Received on Wednesday, 20 April 2011 02:00:04 GMT

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