[css-text] Clarifications to cursive elongation requested by i18n.

Author: fantasai

css-text/Overview.bs

@@ -1748,7 +1748,8 @@ Cursive Scripts</h4>
 
     <p>If it is able, the UA <em>may</em> apply letter spacing to <a>cursive scripts</a>
     by translating the total extra space to be distributed to a run of such letters
-    into some form of cursive elongation (or compression, for negative tracking values) for that run.
+    into some form of cursive elongation (or compression, for negative tracking values) for that run
+    that results in an equivalent total expansion (or compression) of the run.
     Otherwise, if the UA cannot expand text from a <a>cursive script</a>
     without breaking its cursive connections,
     it <em>must not</em> apply spacing
@@ -1773,6 +1774,7 @@ Cursive Scripts</h4>
         <tr><td><img src="images/arabic-stretch-kashida.png" alt="">
             <td class="ok">OK
             <th>Distributing &sum;<var>letter-spacing</var> by typographically-appropriate cursive elongation.
+            <em>The resulting text is as long as the previous evenly-spaced example.</em>
         <tr><td><img src="images/arabic-stretch-suppressed.png" alt="">
             <td class="ok">OK
             <th>Suppressing 'letter-spacing' between Arabic letters.
@@ -1784,12 +1786,18 @@ Cursive Scripts</h4>
       </table>
     </div>
     <div class="note">
-      Note that proper cursive elongation of a text can vary depending on the
+      Note that proper cursive elongation or compression of a text
+      can vary depending on the
       script, typeface, language,
       location within a word, location within a line,
       implementation complexity, font capabilities,
-      and calligraphic preferences.
-      It is outside the scope of CSS to define rules for such elongation.
+      and calligraphic preferences,
+      and may not be possible in certain cases at all.
+      It may involve the use of shortening ligatures,
+      swash variants, contextual forms,
+      elongation glyphs such as U+0640 ARABIC TATWEEL,
+      or other microtypography.
+      It is outside the scope of CSS to define rules for these effects.
       Authors should avoid applying 'letter-spacing' to cursive scripts
       unless they are prepared to accept non-interoperable results.
     </div>

css-text/issues-lc-2013.html

@@ -773,12 +773,13 @@ <h1>CSS Text Level 3 Disposition of Comments for 2013-10-10 LCWD</h1>
 <span>Response: <a href='http://lists.w3.org/Archives/Public/www-style/2014Jul/0370.html'>http://lists.w3.org/Archives/Public/www-style/2014Jul/0370.html</a></span>
 <span class="oi">Closed:   Invalid</span>
 <span>Resolved: Editor discretion</span></pre>
-<pre class='open a' id='issue-85'>
+<pre class=' a' id='issue-85'>
 <span>Issue 85. <a href='#issue-85'>#</a></span>
 <span>Summary:  Forbid breaks before half-width currency</span>
 <span>From:     Koji Ishii</span>
 <span>Comment:  <a href='http://lists.w3.org/Archives/Public/www-style/2014May/0128.html'>http://lists.w3.org/Archives/Public/www-style/2014May/0128.html</a></span>
-<span class="a">Open:     Accepted</span></pre>
+<span class="a">Closed:   Accepted</span>
+<span>Resolved: Editor discretion</span></pre>
 <pre class=' a' id='issue-86'>
 <span>Issue 86. <a href='#issue-86'>#</a></span>
 <span>Summary:  Need more normative requirements for 'text-justify: auto'</span>
@@ -846,7 +847,8 @@ <h1>CSS Text Level 3 Disposition of Comments for 2013-10-10 LCWD</h1>
 <span>Issue 94. <a href='#issue-94'>#</a></span>
 <span>Summary:  Add 'word-break: break-word' to spec</span>
 <span>Comment:  <a href='https://code.google.com/p/chromium/issues/detail?id=492202'>https://code.google.com/p/chromium/issues/detail?id=492202</a></span>
-<span class="">Open:     Waiting for MSFT to determine if it's necessary</span>
+<span>Comment:  <a href='https://lists.w3.org/Archives/Public/www-style/2016Aug/0047.html'>https://lists.w3.org/Archives/Public/www-style/2016Aug/0047.html</a></span>
+<span class="">Open:     =WG= Either WebKit/Blink drops or we add. Discuss and resolve.</span>
 <span>Resolved: Sydney F2F 2016</span></pre>
 <pre class=' a' id='issue-95'>
 <span>Issue 95. <a href='#issue-95'>#</a></span>

css-text/issues-lc-2013.txt

@@ -756,7 +756,8 @@ Issue 85.
 Summary:  Forbid breaks before half-width currency
 From:     Koji Ishii
 Comment:  http://lists.w3.org/Archives/Public/www-style/2014May/0128.html
-Open:     Accepted
+Closed:   Accepted
+Resolved: Editor discretion
 ----
 Issue 86.
 Summary:  Need more normative requirements for 'text-justify: auto'
@@ -824,7 +825,8 @@ Resolved: Editor's discretion
 Issue 94.
 Summary:  Add 'word-break: break-word' to spec
 Comment:  https://code.google.com/p/chromium/issues/detail?id=492202
-Open:     Waiting for MSFT to determine if it's necessary
+Comment:  https://lists.w3.org/Archives/Public/www-style/2016Aug/0047.html
+Open:     =WG= Either WebKit/Blink drops or we add. Discuss and resolve.
 Resolved: Sydney F2F 2016
 ----
 Issue 95.