Re: [csswg-drafts] [css-grid] Clarify `subgrid` "equivalent" to `none` (#6165)

Anyway, to answer your questions:
> What does "equivalent" mean? Does subgrid compute to none in that case? Or is it just at used-value time?

Generally speaking, if we don't say “compute” anywhere, the computed value is not affected.

 > However, if subgrid behaves as none, there is no subgridded axis?
 
I think you're technically correct. Not sure how to reword things cleanly... here's an attempt:

```diff
diff --git a/css-grid-2/Overview.bs b/css-grid-2/Overview.bs
index 292862de7..a15d8be75 100644
--- a/css-grid-2/Overview.bs
+++ b/css-grid-2/Overview.bs
@@ -1557,7 +1557,7 @@ Explicit Track Sizing: the 'grid-template-rows' and 'grid-template-columns' prop
                        Excess <<line-names>> are ignored.
 
                        If there is no [=parent grid=],
-                       this value is equivalent to
+                       the [=used value=] is
                        the initial value, ''grid-template-rows/none'',
                        and the [=grid container=] is not a [=subgrid=].
 
@@ -2011,7 +2011,8 @@ Flexible Lengths: the ''fr'' unit</h4>
 <h4 id='computed-tracks'>
 Computed Value of a Track Listing</h4>
 
-       The <dfn>computed track list</dfn> of a [=standalone axis=]
+       For a [=track list=] specifying a [=standalone axis=],
+       the <dfn>computed track list</dfn>
        is a <a spec=infra>list</a>
        alternating between [=line name sets=] and [=track sections=],
        with the first and last items being [=line name sets=].
@@ -2023,14 +2024,18 @@ Computed Value of a Track Listing</h4>
 
        * a ''minmax()'' functional notation representing a single track's size,
                with each <<length-percentage>> computed
+               (a <dfn>computed track size</dfn>)
        * a ''repeat()'' functional notation representing a repeated track list section,
                with its <<integer>> computed
                and its <<track-list>> represented as a [=computed track list=]
+               (a <dfn>computed repeat notation</dfn>)
 
-       The [=computed track list=] of a [=subgridded axis=]
+       For a [=track list=] specifying a [=subgridded axis=],
+       the [=computed track list=]
        is the ''subgrid'' keyword followed by
        a <a spec=infra>list</a> of [=line name sets=]
-       representing each line in that axis.
+       and [=computed repeat notations=]
+       representing the line names specified for that axis.
 ```

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Received on Wednesday, 30 June 2021 15:40:00 UTC