[css-text] drop minimum/optimum/maximum values for word-spacing as per resolution at Paris F2F

--HG--
extra : rebase_source : 5b6b3550e307bb74dadae59025b9b5c41021b741

Author: kojiishi

css-text/Overview.html

@@ -2364,9 +2364,8 @@ <h4 id=justify-symbols><span class=secno>7.3.2. </span> Handling Symbols
 
   <h4 id=justify-limits><span class=secno>7.3.3. </span> Unexpandable Text</h4>
 
-  <p>The ‘<a href="#word-spacing0"><code
-   class=property>word-spacing</code></a>’ property can specify limits on
-   <a href="#expansion-opportunity"><i>expansion opportunities</i></a>
+  <p>The UA may define limits on <a
+   href="#expansion-opportunity"><i>expansion opportunities</i></a>
    introduced by <a href="#word-separator"><i>word separators</i></a>. How
    any remaining space is distributed once all <a
    href="#expansion-opportunity"><i>expansion opportunities</i></a> reach
@@ -2410,8 +2409,7 @@ <h4 id=justify-algos><span class=secno>7.3.5. </span> Possible Algorithms</h4>
     justification algorithm might use a simple greedy method for determining
     line breaks, then distribute leftover space. This algorithm could follow
     the guidelines by expanding word spaces first, expanding between letters
-    only if ‘<a href="#word-spacing0"><code
-    class=property>word-spacing</code></a>’ hit a limit.
+    only if the spaces between words hit a limit defined by the UA.
 
    <p>A more sophisticated but slower ‘<code class=css>inter-word</code>’
     justification algorithm might use a Knuth/Plass method where <a
@@ -2465,10 +2463,10 @@ <h2 id=spacing><span class=secno>8. </span> Spacing</h2>
    example, double or eliminate word spacing.
 
   <div class=example>
-   <p>In the following example, word spacing is halved, but may expand up to
-    its full amount if needed for text justification.
+   <p>In the following example, word spacing is halved, but may expand
+    　　if needed for text justification.
 
-   <pre>p { word-spacing: -50% 0%; }</pre>
+   <pre>p { word-spacing: -50%; }</pre>
   </div>
 
   <h3 id=word-spacing><span class=secno>8.1. </span> Word Spacing: the ‘<a
@@ -2486,7 +2484,7 @@ <h3 id=word-spacing><span class=secno>8.1. </span> Word Spacing: the ‘<a
      <th><a href="#values">Value</a>:
 
      <td>[ normal | <var>&lt;length&gt;</var> |
-      <var>&lt;percentage&gt;</var>]{1,3}
+      <var>&lt;percentage&gt;</var>]
 
     <tr>
      <th>Initial:
@@ -2533,10 +2531,9 @@ <h3 id=word-spacing><span class=secno>8.1. </span> Word Spacing: the ‘<a
      <td>N/A
   </table>
 
-  <p>This property specifies the optimum, maximum, and minimum spacing (in
-   that order <span class=issue>Is this a good order?</span>) between
-   “words”. Missing values are assumed to be ‘<code
-   class=css>normal</code>’. Values are interpreted as defined below:
+  <p>This property specifies additional spacing between “words”. Missing
+   values are assumed to be ‘<code class=css>normal</code>’. Values are
+   interpreted as defined below:
 
   <dl>
    <dt><dfn id=normal3 title="normal!!word-spacing">‘<code
@@ -2580,27 +2577,29 @@ <h3 id=word-spacing><span class=secno>8.1. </span> Word Spacing: the ‘<a
 
    <pre>p { word-spacing: 0.5ch; }</pre>
   </div>
-
-  <p>In the absence of justification the optimum spacing must be used. The
-   text justification process may alter the spacing from its optimum (see the
-   <a href="#text-justify">‘<code class=property>text-justify</code>’</a>
-   property, above) but must not violate the minimum spacing limit and should
-   also avoid exceeding the maximum. The UA may also use the difference
-   between the minimum/maximum limits and the optimum as input into a
-   weighting algorithm for justification.
+  <!--
+  <p>In the absence of justification the optimum spacing must be used.
+    The text justification process may alter the spacing from its optimum
+    (see the <a href="#text-justify">'text-justify'</a> property, above)
+    but must not violate the minimum spacing limit
+    and should also avoid exceeding the maximum.
+    The UA may also use the difference between the minimum/maximum limits
+    and the optimum as input into a weighting algorithm for justification.
 
   <p>The used optimum and maximum spacing is floored at the minimum.
-   Similarly if the maximum is less than the optimum, then the used optimum
-   is limited to the used maximum.
-
-  <p><dfn id=normal-spacing title="normal spacing">Normal spacing</dfn>:
-   Although ‘<code class=css>normal</code>’ minimum and maximum spacing
-   limits are UA-defined, they must be defined relative to the optimum so
-   that the limits increase and decrease with changes to the optimum spacing.
-   Normal limits may also vary according to the value of the <a
-   href="#text-justify">‘<code class=property>text-justify</code>’</a>
-   property, the element's language, some measure of the amount of text on a
-   line (e.g. block width divided by font size), and/or other factors.
+    Similarly if the maximum is less than the optimum,
+    then the used optimum is limited to the used maximum.
+
+  <p><dfn id="normal-spacing" title="normal spacing">Normal spacing</dfn>:
+    Although ''normal'' minimum and maximum spacing limits are UA-defined,
+    they must be defined relative to the optimum
+    so that the limits increase and decrease with changes to the optimum spacing.
+    Normal limits may also vary according to
+    the value of the <a href="#text-justify">'text-justify'</a> property,
+    the element's language,
+    some measure of the amount of text on a line (e.g. block width divided by font size),
+    and/or other factors.
+-->
 
   <p><dfn id=word-separator
    title="word-separator character | word separator">Word-separator
@@ -4144,9 +4143,6 @@ <h2 class=no-num id=index> Index</h2>
       title="section 8.2."><strong>8.2.</strong></a>
     </ul>
 
-   <li>normal spacing, <a href="#normal-spacing"
-    title="section 8.1."><strong>8.1.</strong></a>
-
    <li>nowrap
     <ul>
      <li>white-space, <a href="#nowrap"
@@ -4507,7 +4503,7 @@ <h2 class=no-num id=property-index> Property Index</h2>
     <tr>
      <th><a class=property href="#word-spacing0">word-spacing</a>
 
-     <td>[ normal | &lt;length&gt; | &lt;percentage&gt;]{1,3}
+     <td>[ normal | &lt;length&gt; | &lt;percentage&gt;]
 
      <td>normal
 

css-text/Overview.src.html

@@ -1725,7 +1725,7 @@ <h4 id="justify-symbols">
 <h4 id="justify-limits">
 Unexpandable Text</h4>
 
-    <p>The 'word-spacing' property can specify limits on
+    <p>The UA may define limits on
       <i>expansion opportunities</i> introduced by <i>word separators</i>.
       How any remaining space is distributed once all <i>expansion opportunities</i>
       reach their specified limits is up to the UA.
@@ -1762,7 +1762,7 @@ <h4 id="justify-algos">
     might use a simple greedy method for determining line breaks,
     then distribute leftover space.
     This algorithm could follow the guidelines by expanding word spaces first,
-    expanding between letters only if 'word-spacing' hit a limit.
+    expanding between letters only if the spaces between words hit a limit defined by the UA.
 
     <p>A more sophisticated but slower ''inter-word'' justification algorithm
     might use a Knuth/Plass method
@@ -1809,9 +1809,9 @@ <h2 id="spacing">
   making it possible to, for example, double or eliminate word spacing.
 
   <div class="example">
-    <p>In the following example, word spacing is halved, but may expand up
-    to its full amount if needed for text justification.
-    <pre>p { word-spacing: -50% 0%; }</pre>
+    <p>In the following example, word spacing is halved, but may expand
+　　if needed for text justification.
+    <pre>p { word-spacing: -50%; }</pre>
   </div>
 
 <h3 id="word-spacing">
@@ -1823,7 +1823,7 @@ <h3 id="word-spacing">
       <td><dfn>word-spacing</dfn>
     <tr>
       <th><a href="#values">Value</a>:
-      <td>[ normal | <var>&lt;length&gt;</var> | <var>&lt;percentage&gt;</var>]{1,3}
+      <td>[ normal | <var>&lt;length&gt;</var> | <var>&lt;percentage&gt;</var>]
     <tr>
       <th>Initial:
       <td>normal
@@ -1851,8 +1851,7 @@ <h3 id="word-spacing">
       <td>N/A
   </table>
 
-    <p>This property specifies the optimum, maximum, and minimum spacing
-      (in that order <span class="issue">Is this a good order?</span>)
+    <p>This property specifies additional spacing
       between &ldquo;words&rdquo;.
       Missing values are assumed to be ''normal''.
       Values are interpreted as defined below:
@@ -1889,6 +1888,7 @@ <h3 id="word-spacing">
     <pre>p { word-spacing: 0.5ch; }</pre>
   </div>
 
+<!--
   <p>In the absence of justification the optimum spacing must be used.
     The text justification process may alter the spacing from its optimum
     (see the <a href="#text-justify">'text-justify'</a> property, above)
@@ -1910,6 +1910,7 @@ <h3 id="word-spacing">
     the element's language,
     some measure of the amount of text on a line (e.g. block width divided by font size),
     and/or other factors.
+-->
 
     <p><dfn id="word-separator" title="word-separator character | word separator">Word-separator characters</dfn> include 
       the space (U+0020), the no-break space (U+00A0), the Ethiopic word space (U+1361),