[css-text] Add issue text wrt text-align / text-align-last interaction to solicit feedback.

Author: fantasai

css-text/Overview.html

@@ -1860,6 +1860,39 @@ <h2 id=justification><span class=secno>7. </span> Alignment and
   <p>Alignment and justification controls how inline content is distributed
    within a line box.
 
+  <div class=issue>
+   <p>There's a proposal for ‘<a href="#text-align0"><code
+    class=property>text-align</code></a>’ to become a shorthand for ‘<a
+    href="#text-align-last0"><code
+    class=property>text-align-last</code></a>’ and ‘<code
+    class=property>text-align-all</code>’. This has the advantage that
+    ‘<a href="#text-align-last0"><code
+    class=property>text-align-last</code></a>’ can be set in a single
+    declaration with ‘<a href="#text-align0"><code
+    class=property>text-align</code></a>’, e.g. ‘<code
+    class=css>text-align: justify-all</code>’ (justify align all lines) or
+    ‘<code class=css>text-align: justify center</code>’ (justify all
+    lines except center last line). It has the disadvantage of creating the
+    ‘<code class=property>text-align-all</code>’ property. There are also
+    some cascading considerations: if ‘<a href="#text-align-last0"><code
+    class=property>text-align-last</code></a>’ is part of the shorthand,
+    then any declaration of ‘<a href="#text-align0"><code
+    class=property>text-align</code></a>’ will reset it; it's unclear if
+    this is an advantage or a disadvantage.
+
+   <p>The CSSWG has no strong opinion on this issue, and solicits feedback
+    from others. We unfortunately can't <em>drop</em> ‘<a
+    href="#text-align-last0"><code
+    class=property>text-align-last</code></a>’ in favor of an expanded
+    value set in ‘<a href="#text-align0"><code
+    class=property>text-align</code></a>’ because of existing content and
+    implementations. However, because authors have a pattern of typing ‘<a
+    href="#text-align-last0"><code
+    class=property>text-align-last</code></a>’ after ‘<a
+    href="#text-align0"><code class=property>text-align</code></a>’, we can
+    change their interaction without breaking content.
+  </div>
+
   <h3 id=text-align><span class=secno>7.1. </span> Text Alignment: the ‘<a
    href="#text-align0"><code class=property>text-align</code></a>’ property</h3>
 
@@ -3527,12 +3560,9 @@ <h3 class=no-num id=recent-changes> Changes from the <a
     class=property>text-justify</code></a>’.
 
    <li>Dropped minimum and maximum values in ‘<a
-    href="#letter-spacing0"><code
-    class=property>letter-spacing</code></a>’.
-
-   <li>Changed interpretation of three-value syntax in ‘<a
-    href="#word-spacing0"><code class=property>word-spacing</code></a>’ to
-    default missing values to ‘<code class=css>normal</code>’.
+    href="#letter-spacing0"><code class=property>letter-spacing</code></a>’
+    and ‘<a href="#word-spacing0"><code
+    class=property>word-spacing</code></a>’.
 
    <li>Removed <var>&lt;string&gt;</var> value of ‘<a
     href="#text-align0"><code class=property>text-align</code></a>’.

css-text/Overview.src.html

@@ -1334,6 +1334,22 @@ <h2 id="justification">
 
   <p>Alignment and justification controls how inline content is distributed within a line box.
 
+  <div class="issue">
+    <p>There's a proposal for 'text-align' to become a shorthand for 'text-align-last' and 'text-align-all'.
+    This has the advantage that 'text-align-last' can be set in a single declaration with 'text-align',
+    e.g. ''text-align: justify-all'' (justify align all lines) or ''text-align: justify center'' (justify all lines except center last line).
+    It has the disadvantage of creating the 'text-align-all' property.
+    There are also some cascading considerations:
+    if 'text-align-last' is part of the shorthand, then any declaration of 'text-align' will reset it;
+    it's unclear if this is an advantage or a disadvantage.
+
+    <p>The CSSWG has no strong opinion on this issue, and solicits feedback from others.
+    We unfortunately can't <em>drop</em> 'text-align-last' in favor of an expanded value set in 'text-align'
+    because of existing content and implementations.
+    However, because authors have a pattern of typing 'text-align-last' after 'text-align',
+    we can change their interaction without breaking content.
+  </div>
+
   <h3 id="text-align">
     Text Alignment: the 'text-align' property</h3>
 
@@ -2611,8 +2627,7 @@ <h3 class="no-num" id="recent-changes">
   <p>Major changes include:
   <ul>
     <li>Removed ''inter-ideograph'', ''inter-cluster'', and ''kashida'' values of 'text-justify'.
-    <li>Dropped minimum and maximum values in 'letter-spacing'.
-    <li>Changed interpretation of three-value syntax in 'word-spacing' to default missing values to ''normal''.
+    <li>Dropped minimum and maximum values in 'letter-spacing' and 'word-spacing'.
     <li>Removed <var>&lt;string&gt;</var> value of 'text-align'.
   </ul>
 

css-writing-modes/Overview.src.html

@@ -2219,7 +2219,7 @@ <h3 id="text-combine-horizontal">
 
   <p>This property specifies the combination of multiple characters into the space of a single character.
     If the combined text is wider than 1em, the UA must fit the contents within 1em, see below.
-    The resulting composition is treated as a single glyph for the purposes of layout and decoration.
+    The resulting composition is treated as a single upright glyph for the purposes of layout and decoration.
     This property only has an effect in vertical writing modes. Values have the following meanings:
 
   <dl>