Revise orthogonal flows with multicol section.

Author: fantasai

css3-writing-modes/Overview.html

@@ -2261,28 +2261,45 @@ <h4 id=orthogonal-multicol><span class=secno>7.3.2. </span> Multi-column
    the available extent is defined but the available measure is infinite and
    the element's measure is unconstrained (is not fixed and has no maximum):
 
-  <ul>
+  <ol>
    <li>If &lsquo;<code class=property>column-count</code>&rsquo; and
     &lsquo;<code class=property>column-width</code>&rsquo; are both &lsquo;<a
     href="#auto"><code class=css>auto</code></a>&rsquo;, then the
     &lsquo;<code class=property>column-count</code>&rsquo; is assumed to be
     &lsquo;<code class=css>1</code>&rsquo;, and the following rules apply.
 
-   <li>If the &lsquo;<code class=property>column-count</code>&rsquo; is not
+   <li>If the &lsquo;<code class=property>column-width</code>&rsquo; is
     &lsquo;<a href="#auto"><code class=css>auto</code></a>&rsquo;, the column
     width is calculated as if the element's containing block were the initial
-    containing block, and the rest of the layout is calculated as described
-    below for non-&lsquo;<a href="#auto"><code
-    class=css>auto</code></a>&rsquo; column widths.
-
-   <li>If the &lsquo;<code class=property>column-width</code>&rsquo; is not
-    &lsquo;<a href="#auto"><code class=css>auto</code></a>&rsquo;, the
-    available extent is used to calculate the column extent by subtracting
-    out the element's margins, borders, and padding in the block dimension
-    and flooring the result at zero. The used column-count and the used
-    measure of the element then follow from filling the resulting columns
+    containing block.
+
+   <li>If the column's extent is not defined, the available extent is used to
+    calculate the column extent by subtracting out the element's margins,
+    borders, and padding in the block dimension and flooring the result at
+    zero.
+
+   <li>The used column-count then follows from filling the resulting columns
     with the element's content.
-  </ul>
+  </ol>
+
+  <p>The used measure of the element is then the &lsquo;<code
+   class=css>max-content</code>&rsquo; measure of the resulting multi-column
+   element. (If the content neither wraps nor paginates within the
+   multi-column element, then this will be the intrinsic measure of the
+   content; else it will be calculated from the used column width, column
+   count, and column gap.)
+
+  <p>The used extent of the element is either the used column extent (if
+   multiple columns were used) or the intrinsic extent of the content.
+
+  <p class=issue>Does CSS3 Multi-col define shrink-wrap sizing? Because
+   that's what we're trying to use here in the last two steps...
+
+  <p class=note>This should behave the same as the auto-sizing algorithm
+   defined in the previous section, except overflowing content, instead of
+   continuing off the side of the containing block, is wrapped into columns
+   in the flow direction of the containing block, thus avoiding T-shaped
+   documents.
 
   <h4 id=orthogonal-pagination><span class=secno>7.3.3. </span> Paginating
    Orthogonal Flows</h4>

css3-writing-modes/Overview.src.html

@@ -1672,21 +1672,38 @@ <h4 id="orthogonal-multicol">
     available measure is infinite and the element's measure is
     unconstrained (is not fixed and has no maximum):
 
-  <ul>
+  <ol>
     <li>If 'column-count' and 'column-width' are both ''auto'', then
       the 'column-count' is assumed to be ''1'', and the following rules
       apply.
-    <li>If the 'column-count' is not ''auto'', the column width is
+    <li>If the 'column-width' is ''auto'', the column width is
       calculated as if the element's containing block were the initial
-      containing block, and the rest of the layout is calculated as
-      described below for non-''auto'' column widths.
-    <li>If the 'column-width' is not ''auto'', the available extent is
+      containing block.
+    <li>If the column's extent is not defined, the available extent is
       used to calculate the column extent by subtracting out the element's
       margins, borders, and padding in the block dimension and flooring
-      the result at zero. The used column-count and the used measure of
-      the element then follow from filling the resulting columns with the
-      element's content.
-  </ul>
+      the result at zero.
+    <li>The used column-count then follows from filling the resulting
+      columns with the element's content.
+  </ol>
+  
+  <p>The used measure of the element is then the ''max-content'' measure
+    of the resulting multi-column element.
+    (If the content neither wraps nor paginates within the multi-column
+    element, then this will be the intrinsic measure of the content;
+    else it will be calculated from the used column width, column count,
+    and column gap.)
+  <p>The used extent of the element is either the used column extent
+    (if multiple columns were used) or the intrinsic extent of the content.
+
+  <p class="issue">Does CSS3 Multi-col define shrink-wrap sizing? Because
+    that's what we're trying to use here in the last two steps...</p>
+
+  <p class="note">This should behave the same as the auto-sizing algorithm
+    defined in the previous section, except overflowing content, instead of
+    continuing off the side of the containing block, is wrapped into
+    columns in the flow direction of the containing block, thus avoiding
+    T-shaped documents.</p>
 
 <h4 id="orthogonal-pagination">
 Paginating Orthogonal Flows</h4>