[css-writing-modes] Fix orthogonal flows to correctly handle max-height on containing block. #2239

Author: fantasai

css-writing-modes-3/Overview.bs

@@ -2031,13 +2031,20 @@ Available Space in Orthogonal Flows</h4>
     but its <a>available inline space</a> to be indefinite.
     In such cases a percentage of the containing block’s <a>inline size</a> cannot be defined,
     and <a>inline axis</a> computations cannot be resolved.
-    In these cases, the smaller of
-    the initial containing block’s size or
-    the nearest ancestor <a>scrollport</a>’s inner size
-    if that size is fixed (else its inner max-size, if that is fixed)
-    is used as a <a>fallback</a>
+    In these cases,
+    an additional constraint is used as a <a>fallback</a>
     in place of the <a>available inline space</a>
-    for calculations that require a definite <a>available inline space</a>.
+    for calculations that require a definite <a>available inline space</a>--
+    the smallest of
+    <ul>
+      <li>the size represented by
+          the containing block’s inner <a>max size</a> (if that is fixed)
+          floored by its inner <a>min size</a> (if that is fixed)
+      <li>the nearest ancestor <a>scrollport</a>’s inner size if that is fixed,
+          else / capped by its inner <a>max size</a> if that is fixed,
+          floored by its inner <a>min size</a> if that is fixed
+      <li>the initial containing block’s size
+    </ul>
 
   <p>See [[!CSS3-SIZING]] for further details on CSS sizing terminology and concepts.
 

css-writing-modes-4/Overview.bs

@@ -565,7 +565,7 @@ english17 <i lt=''>20WERBEH english19 18WERBEH</i>
 <!-- -->english16
 
 <!-- -->english17 <i lt=''>18WERBEH
-<!-- -->20WERBEH english19</a>
+<!-- -->20WERBEH english19</i>
     </pre>
 
     <p>Notice that because <samp>HEBREW18</samp> must be read before <samp>english19</samp>,
@@ -2057,12 +2057,20 @@ Available Space in Orthogonal Flows</h4>
     but its <a>available inline space</a> to be indefinite.
     In such cases a percentage of the containing block’s <a>inline size</a> cannot be defined,
     and <a>inline axis</a> computations cannot be resolved.
-    In these cases, the smaller of
-    the nearest fixed-size ancestor <a>scrollport</a>’s size (if any)
-    or the initial containing block’s size
-    is used as a <a>fallback</a>
+    In these cases,
+    an additional constraint is used as a <a>fallback</a>
     in place of the <a>available inline space</a>
-    for calculations that require a definite <a>available inline space</a>.
+    for calculations that require a definite <a>available inline space</a>--
+    the smallest of
+    <ul>
+      <li>the size represented by
+          the containing block’s inner <a>max size</a> (if that is fixed)
+          floored by its inner <a>min size</a> (if that is fixed)
+      <li>the nearest ancestor <a>scrollport</a>’s inner size if that is fixed,
+          else / capped by its inner <a>max size</a> if that is fixed,
+          floored by its inner <a>min size</a> if that is fixed
+      <li>the initial containing block’s size
+    </ul>
 
   <p>See [[!CSS3-SIZING]] for further details on CSS sizing terminology and concepts.
 
@@ -2090,10 +2098,16 @@ Auto-sizing Block Containers in Orthogonal Flows</h4>
 
         <dt><var>constraint</var>
         <dd>the <a>inline-axis</a> size
-        that would <a>stretch fit</a> into to the smaller of
+        that would <a>stretch fit</a> into to the smallest of
         <ul>
-          <li>the <a>available space</a>
-          <li>the nearest ancestor <a>scrollport</a>’s inner size if that is fixed, else its inner max-size if that is fixed
+          <li>the <a>available space</a>:
+              the containing block’s size if that is fixed,
+              else the size represented by
+              the containing block’s inner <a>max size</a> (if that is fixed)
+              floored by its inner <a>min size</a> (if that is fixed)
+          <li>the nearest ancestor <a>scrollport</a>’s inner size if that is fixed,
+              else / capped by its inner <a>max size</a> if that is fixed,
+              floored by its inner <a>min size</a> if that is fixed
           <li>the initial containing block’s size
       </dl>