[css-align] Make stretch actually work for abspos boxes.

Author: tabatkins

css-align/Overview.bs

@@ -607,7 +607,7 @@ Inline/Main-Axis Alignment: the 'justify-self' property</h3>
 	<a href="#alignment-values">as described by its alignment value</a>.
 
 	The <dfn value for="justify-self">auto</dfn> keyword computes to
-	''<item-position>/stretch'' on absolutely-positioned elements,
+	itself on absolutely-positioned elements,
 	and to the computed value of 'justify-items' on the parent
 	(minus any ''legacy'' keywords) on all other boxes.
 
@@ -654,7 +654,8 @@ Inline/Main-Axis Alignment: the 'justify-self' property</h3>
 			are ignored in favor of alignment as specified here
 			and the used value of the offset properties are not adjusted to correct for the over-constraint.
 
-			The ''<item-position>/stretch'' keyword is equivalent to ''start'' on replaced absolutely-positioned boxes.
+			The ''justify-self/auto'' keyword is equivalent to ''start'' on replaced absolutely-positioned boxes,
+			and equivalent to ''<item-position>/stretch'' on all other absolutely-positioned boxes.
 			(This is because CSS 2.1 does not stretch replaced elements to fit into fixed offsets.)
 
 		<dt>Table Cells:
@@ -711,7 +712,7 @@ Block/Cross-Axis Alignment: the 'align-self' property</h3>
 	<a href="#alignment-values">as described by its alignment value</a>.
 
 	The <dfn value for="align-self">auto</dfn> keyword computes to
-	''<item-position>/stretch'' on absolutely-positioned elements,
+	itself on absolutely-positioned elements,
 	and to the computed value of 'align-items' on the parent
 	(minus any ''legacy'' keywords) on all other boxes.
 
@@ -744,7 +745,8 @@ Block/Cross-Axis Alignment: the 'align-self' property</h3>
 			are ignored in favor of alignment as specified here
 			and the used value of the offset properties are not adjusted to correct for the over-constraint.
 
-			The ''<item-position>/stretch'' keyword is equivalent to ''start'' on replaced absolutely-positioned boxes.
+			The ''align-self/auto'' keyword is equivalent to ''start'' on replaced absolutely-positioned boxes,
+			and equivalent to ''<item-position>/stretch'' on all other absolutely-positioned boxes.
 			(This is because CSS 2.1 does not stretch replaced elements to fit into fixed offsets.)
 
 		<dt>Table Cells:
@@ -1046,12 +1048,9 @@ Changes</h2>
 
 	Changes since the <a href="http://www.w3.org/TR/2013/WD-css3-align-20130514/">previous Working Draft</a> include:
 
-	<ul>
-		<li>
-			Added ''last-baseline'' keyword.
-		<li>
-			Improved details of baseline alignment.
-	</ul>
+	* Added ''last-baseline'' keyword.
+	* Improved details of baseline alignment.
+	* Changed handling of ''justify-self/auto''/''<item-position>/stretch'' for block-level and abspos elements in 'justify-self'/'align-self' to be more powerful and less confusing.
 
 <h2 class=no-num id="acknowledgments">
 Acknowledgments</h2>

css-align/Overview.html

@@ -713,7 +713,7 @@ <h3 class="heading settled" data-level=5.1 id=justify-self-property><span class=
 	<a href=#alignment-values>as described by its alignment value</a>.</p>
 
 <p>The <dfn class=css data-dfn-for=justify-self data-dfn-type=value data-export="" id=valdef-justify-self-auto>auto<a class=self-link href=#valdef-justify-self-auto></a></dfn> keyword computes to
-	<a class=css data-link-for="" data-link-type=maybe href=#valdef-item-position-stretch>stretch</a> on absolutely-positioned elements,
+	itself on absolutely-positioned elements,
 	and to the computed value of <a class=property data-link-type=propdesc href=#propdef-justify-items>justify-items</a> on the parent
 	(minus any <a class=css data-link-type=maybe href=#valdef-justify-items-legacy>legacy</a> keywords) on all other boxes.</p>
 
@@ -760,7 +760,8 @@ <h3 class="heading settled" data-level=5.1 id=justify-self-property><span class=
 			are ignored in favor of alignment as specified here
 			and the used value of the offset properties are not adjusted to correct for the over-constraint.</p>
 
-<p>The <a class=css data-link-for="" data-link-type=maybe href=#valdef-item-position-stretch>stretch</a> keyword is equivalent to <a class=css data-link-type=maybe href=#valdef-item-position-content-position-start>start</a> on replaced absolutely-positioned boxes.
+<p>The <a class=css data-link-for=justify-self data-link-type=maybe href=#valdef-justify-self-auto>auto</a> keyword is equivalent to <a class=css data-link-type=maybe href=#valdef-item-position-content-position-start>start</a> on replaced absolutely-positioned boxes,
+			and equivalent to <a class=css data-link-for="" data-link-type=maybe href=#valdef-item-position-stretch>stretch</a> on all other absolutely-positioned boxes.
 			(This is because CSS 2.1 does not stretch replaced elements to fit into fixed offsets.)</p>
 
 		<dt>Table Cells:
@@ -807,7 +808,7 @@ <h3 class="heading settled" data-level=5.2 id=align-self-property><span class=se
 	<a href=#alignment-values>as described by its alignment value</a>.</p>
 
 <p>The <dfn class=css data-dfn-for=align-self data-dfn-type=value data-export="" id=valdef-align-self-auto>auto<a class=self-link href=#valdef-align-self-auto></a></dfn> keyword computes to
-	<a class=css data-link-for="" data-link-type=maybe href=#valdef-item-position-stretch>stretch</a> on absolutely-positioned elements,
+	itself on absolutely-positioned elements,
 	and to the computed value of <a class=property data-link-type=propdesc href=#propdef-align-items>align-items</a> on the parent
 	(minus any <a class=css data-link-type=maybe href=#valdef-justify-items-legacy>legacy</a> keywords) on all other boxes.</p>
 
@@ -840,7 +841,8 @@ <h3 class="heading settled" data-level=5.2 id=align-self-property><span class=se
 			are ignored in favor of alignment as specified here
 			and the used value of the offset properties are not adjusted to correct for the over-constraint.</p>
 
-<p>The <a class=css data-link-for="" data-link-type=maybe href=#valdef-item-position-stretch>stretch</a> keyword is equivalent to <a class=css data-link-type=maybe href=#valdef-item-position-content-position-start>start</a> on replaced absolutely-positioned boxes.
+<p>The <a class=css data-link-for=align-self data-link-type=maybe href=#valdef-align-self-auto>auto</a> keyword is equivalent to <a class=css data-link-type=maybe href=#valdef-item-position-content-position-start>start</a> on replaced absolutely-positioned boxes,
+			and equivalent to <a class=css data-link-for="" data-link-type=maybe href=#valdef-item-position-stretch>stretch</a> on all other absolutely-positioned boxes.
 			(This is because CSS 2.1 does not stretch replaced elements to fit into fixed offsets.)</p>
 
 		<dt>Table Cells:
@@ -1123,13 +1125,10 @@ <h2 class="heading settled" data-level=8 id=changes><span class=secno>8. </span>
 
 <p>Changes since the <a href=http://www.w3.org/TR/2013/WD-css3-align-20130514/>previous Working Draft</a> include:</p>
 
-	<ul>
-		<li>
-			Added <a class=css data-link-type=maybe href=#valdef-justify-content-justify-self-justify-items-align-content-align-self-align-items-last-baseline>last-baseline</a> keyword.
-		<li>
-			Improved details of baseline alignment.
-	</ul>
-
+<ul><li data-md=""><p>Added <a class=css data-link-type=maybe href=#valdef-justify-content-justify-self-justify-items-align-content-align-self-align-items-last-baseline>last-baseline</a> keyword.</p>
+<li data-md=""><p>Improved details of baseline alignment.</p>
+<li data-md=""><p>Changed handling of <a class=css data-link-for=justify-self data-link-type=maybe href=#valdef-justify-self-auto>auto</a>/<a class=css data-link-for="" data-link-type=maybe href=#valdef-item-position-stretch>stretch</a> for block-level and abspos elements in <a class=property data-link-type=propdesc href=#propdef-justify-self>justify-self</a>/<a class=property data-link-type=propdesc href=#propdef-align-self>align-self</a> to be more powerful and less confusing.</p>
+</ul>
 <h2 class="no-num heading settled" id=acknowledgments><span class=content>
 Acknowledgments</span><a class=self-link href=#acknowledgments></a></h2>