[css-text-decor] Update spec to account for sideways-lr and sideways-rl values of writing-mode.

Author: fantasai

css-text-decor/Overview.bs

@@ -384,7 +384,7 @@ Text Underline Position: the 'text-underline-position' property</h3>
       In this case the underline usually does not cross the descenders.
       (This is sometimes called “accounting” underline.)
       This value can be combined with ''text-underline-position/left'' or ''text-underline-position/right''
-      if a particular side is preferred in vertical writing modes.
+      if a particular side is preferred in vertical <a>typographic modes</a>.
       <div class="figure">
         <p><img title="text-underline-position: under"
             alt="In a typical Latin font, the underline is far enough
@@ -403,13 +403,13 @@ Text Underline Position: the 'text-underline-position' property</h3>
         <pre>:root { text-underline-position: under; }</pre>
       </div>
     <dt><dfn id="underline-left" value for="text-underline-position">left</dfn></dt>
-    <dd>In vertical writing modes, the underline is aligned as for
+    <dd>In vertical <a>typographic modes</a>, the underline is aligned as for
       ''text-underline-position/under'', except it is always aligned to the left edge of the text.
       If this causes the underline to be drawn on the "over" side of
       the text, then an overline also switches sides and is drawn on
       the "under" side.
     <dt><dfn id="underline-right" value for="text-underline-position">right</dfn></dt>
-    <dd>In vertical writing modes, the underline is aligned as for
+    <dd>In vertical <a>typographic modes</a>, the underline is aligned as for
       ''text-underline-position/under'', except it is always aligned to the right edge of the text.
       If this causes the underline to be drawn on the "over" side of
       the text, then an overline also switches sides and is drawn on
@@ -437,9 +437,9 @@ Text Underline Position: the 'text-underline-position' property</h3>
         <td>''text-underline-position/left''
         <td>''text-underline-position/right''
     </table>
-    <p class="caption">In vertical writing modes, the 'text-underline-position'
+    <p class="caption">In vertical <a>typographic modes</a>, the 'text-underline-position'
       values ''text-underline-position/left'' and ''text-underline-position/right'' allow placing the underline on either
-      side of the text. (In horizontal writing modes, both values are
+      side of the text. (In horizontal <a>typographic modes</a>, both values are
       treated as ''text-underline-position/under''.)</p>
   </div>
 
@@ -659,15 +659,15 @@ Emphasis Mark Style: the 'text-emphasis-style' property</h3>
 
   <p>If a shape keyword is specified but neither of ''filled'' nor ''open'' is
     specified, ''filled'' is assumed. If only ''filled'' or ''open'' is specified,
-    the shape keyword computes to ''circle'' in horizontal writing mode and
-    ''sesame'' in vertical writing mode.</p>
+    the shape keyword computes to ''circle'' in horizontal <a>typographic modes</a> and
+    ''sesame'' in vertical <a>typographic modes</a>.</p>
 
   <p>The marks should be drawn using the element's font settings with its
     size scaled down to 50%. However, not all fonts have all these glyphs,
     and some fonts use inappropriate sizes for emphasis marks in these
     code points. The UA may opt to use a font known to be good for
     emphasis marks, or the marks may instead be synthesized by the UA.
-    Marks must remain upright in vertical writing modes: like CJK
+    Marks must remain upright in vertical <a>typographic modes</a>: like CJK
     characters, they do not rotate to match the writing mode.</p>
 
   <p class="note">
@@ -739,13 +739,13 @@ Emphasis Mark Position: the 'text-emphasis-position' property</h3>
 
   <dl>
     <dt><dfn value for="text-text-emphasis-position">over</dfn></dt>
-      <dd>Draw marks over the text in horizontal writing mode.</dd>
+      <dd>Draw marks over the text in horizontal <a>typographic modes</a>.</dd>
     <dt><dfn value for="text-text-emphasis-position">under</dfn></dt>
-      <dd>Draw marks under the text in horizontal writing mode.</dd>
+      <dd>Draw marks under the text in horizontal <a>typographic modes</a>.</dd>
     <dt><dfn value for="text-text-emphasis-position">right</dfn></dt>
-      <dd>Draw marks to the right of the text in vertical writing mode.</dd>
+      <dd>Draw marks to the right of the text in vertical <a>typographic modes</a>.</dd>
     <dt><dfn value for="text-text-emphasis-position">left</dfn></dt>
-      <dd>Draw marks to the left of the text in vertical writing mode.</dd>
+      <dd>Draw marks to the left of the text in vertical <a>typographic modes</a>.</dd>
   </dl>
 
   <p>Emphasis marks are drawn exactly as if each character was
@@ -919,6 +919,9 @@ Changes</h2>
   <ul>
     <li>Specified that line-throughs are unaffected by 'text-decoration-skip: ink'.
         (<a href="https://github.com/w3c/csswg-drafts/issues/711">Issue 771</a>)
+    <li>Updated writing-mode&ndash;sensitive conditions to depend on <a>typographic mode</a>,
+        to account for addition of ''sideways-lr'' and ''sideways-rl'' values to 'writing-mode' property.
+        (<a href="https://www.w3.org/mid/56E86D82.10606@inkedblade.net">Issue</a>)
   </ul>
 
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