[css-grid][css-align] Clarify handling of collapsed gutters when applying distributed alignment. #1140

Author: fantasai

css-align/Overview.bs

@@ -744,7 +744,7 @@ Details per Layout Mode {#distribution-details}
 		<tr>
 			<th><a lt="alignment subject">Alignment Subject(s)</a>
 			<td>
-				The <a>grid tracks</a> in the appropriate axis.
+				The non-<a spec="css-grid" lt="collapsed track">collapsed</a> <a>grid tracks</a> in the appropriate axis.
 		<tr>
 			<th>'align-content' Axis
 			<td>
@@ -761,9 +761,9 @@ Details per Layout Mode {#distribution-details}
 				''justify-content/normal'' behaves as ''justify-content/stretch''.
 	</table>
 
+	Any spacing added between tracks is applied to the relevant <a>gutters</a>.
 	See [[!CSS-GRID-1]] for details.
 
-
 <h3 id="baseline-align-content">
 Baseline Content-Alignment</h3>
 

css-grid/Overview.bs

@@ -1640,7 +1640,9 @@ Repeat-to-fill: ''auto-fill'' and ''auto-fit'' repetitions</h5>
 
 	A <dfn local-lt=collapse>collapsed track</dfn> is treated as having
 	a fixed <a>track sizing function</a> of ''0px'',
-	and the <a>gutters</a> on either side of it <a lt="collapsed gutter">collapse</a>.
+	and the <a>gutters</a> on either side of it--
+	including any space allotted through <a>distributed alignment</a>--
+	<a lt="collapsed gutter">collapse</a>.
 
 	For the purpose of finding the number of auto-repeated tracks,
 	the UA must floor the track size to a UA-specified value