[css-flexbox][css-grid] Content-based auto min doesn't cause indefiniteness, but other *-content min sizes do. #6457

Author: tabatkins

css-flexbox-1/Overview.bs

@@ -1028,7 +1028,10 @@ Grid doesn't have similarly meaningful shrinkability, so it doesn't need to care
 	Note this means that percentages calculated against this size
 	will [=behave as auto=].
 
-	For other cases, it does not force the box's size to become indefinite.
+	For any purpose <em>other than</em> calculating intrinsic sizes,
+	a [=content-based minimum size=]
+	(unlike an explicit ''min-content''/etc [=minimum size=])
+	does not force the box's size to become indefinite.
 	However, if a percentage resolved against the box's size <em>before</em> this minimum was applied,
 	it must be re-resolved against the new size after it is applied.
 

css-grid-1/Overview.bs

@@ -1386,10 +1386,12 @@ Automatic Minimum Size of Grid Items</h3>
 	Note this means that percentages calculated against this size
 	will [=behave as auto=].
 
-	Nonetheless, although this may require an additional layout pass to re-resolve percentages in some cases,
-	this value
-	(like the ''min-content'', ''max-content'', and ''fit-content'' values defined in [[CSS-SIZING-3]])
-	does not prevent the resolution of percentage sizes within the item.
+	For any purpose <em>other than</em> calculating intrinsic sizes,
+	a [=content-based minimum size=]
+	(unlike an explicit ''min-content''/etc [=minimum size=])
+	does not force the box's size to become indefinite.
+	However, if a percentage resolved against the box's size <em>before</em> this minimum was applied,
+	it must be re-resolved against the new size after it is applied.
 
 	<div class="note" id="min-size-opt">
 		Note that while a content-based minimum size is often appropriate,

css-grid-2/Overview.bs

@@ -1434,10 +1434,12 @@ Automatic Minimum Size of Grid Items</h3>
 	Note this means that percentages calculated against this size
 	will [=behave as auto=].
 
-	Nonetheless, although this may require an additional layout pass to re-resolve percentages in some cases,
-	this value
-	(like the ''min-content'', ''max-content'', and ''fit-content'' values defined in [[CSS-SIZING-3]])
-	does not prevent the resolution of percentage sizes within the item.
+	For any purpose <em>other than</em> calculating intrinsic sizes,
+	a [=content-based minimum size=]
+	(unlike an explicit ''min-content''/etc [=minimum size=])
+	does not force the box's size to become indefinite.
+	However, if a percentage resolved against the box's size <em>before</em> this minimum was applied,
+	it must be re-resolved against the new size after it is applied.
 
 	<div class="note" id="min-size-opt">
 		Note that while a content-based minimum size is often appropriate,