[css-inline-3] Add trim- prefix to text-box-trim keywords w3c#10675

Author: fantasai

css-inline-3/Overview.bs

@@ -1362,7 +1362,7 @@ Shorthand for Text Box Trimming: the 'text-box' property</h3>
 
 	<pre class="propdef">
 	Name: text-box
-	Value: normal | [ start | end | both ] || [ text | cap | ex | ideographic | ideographic-ink ] [ text | alphabetic | ideographic | ideographic-ink ]?
+	Value: normal | <<'text-box-trim'>> || <<'text-box-edge'>>
 	Initial: normal
 	Applies to: [=block containers=] and [=inline boxes=]
 	Inherited: no
@@ -1374,24 +1374,20 @@ Shorthand for Text Box Trimming: the 'text-box' property</h3>
 	This property is a [=shorthand=] for setting the 'text-box-trim' and 'text-box-edge' properties
 	in a single declaration.
 
-	If the single keyword ''text-box-edge/normal'' is specified,
+	If the single keyword <dfn for=text-box type=value>normal</dfn> is specified,
 	it sets 'text-box-trim' to ''text-box-trim/none''
 	and 'text-box-edge' to ''text-box-edge/auto''.
 	Otherwise, omitting the 'text-box-trim' value sets it to ''text-box-trim/both'' (not the initial value),
 	while omitting the 'text-box-edge' value sets it to ''text-box-edge/auto'' (the initial value).
 
-	ISSUE(8067): We should rename the 'text-box-trim' values to add ''trim-*'' prefixes.
-	This would make the shorthand clearer,
-	and also make its value space consistent with 'text-spacing'.
-
 	ISSUE: Add examples.
 
 <h3 id="text-box-trim">
 Trimming Over/Under Text: the 'text-box-trim' property</h3>
 
 	<pre class="propdef">
 	Name: text-box-trim
-	Value: none | start | end | both
+	Value: none | trim-start | trim-end | trim-both
 	Initial: none
 	Applies to: block containers and [=inline boxes=]
 	Inherited: no
@@ -1427,7 +1423,7 @@ Trimming Over/Under Text: the 'text-box-trim' property</h3>
 			regardless of 'text-box-edge'
 			(which nonetheless still affects [=line box=] sizing).
 
-		<dt><dfn>start</dfn>
+		<dt><dfn>trim-start</dfn>
 		<dd>
 			For [=block containers=]:
 			trim the [=block-start=] side of the <a>first formatted line</a>
@@ -1441,7 +1437,7 @@ Trimming Over/Under Text: the 'text-box-trim' property</h3>
 			to match its [=content edge=] to the metric specified by 'text-box-edge'
 			(treating ''text-box-edge/leading'' as ''text-box-edge/text'').
 
-		<dt><dfn>end</dfn>
+		<dt><dfn>trim-end</dfn>
 		<dd>
 			For [=block containers=]:
 			trim the [=block-end=] side of the last formatted line
@@ -1455,9 +1451,9 @@ Trimming Over/Under Text: the 'text-box-trim' property</h3>
 			to match its [=content edge=] to the metric specified by 'text-box-edge'
 			(treating ''text-box-edge/leading'' as ''text-box-edge/text'').
 
-		<dt><dfn>both</dfn>
+		<dt><dfn>trim-both</dfn>
 		<dd>
-			Specifies the behavior of ''text-box-trim/start'' and ''text-box-trim/end''
+			Specifies the behavior of ''text-box-trim/trim-start'' and ''text-box-trim/trim-end''
 			simultaneously.
 	</dl>
 
@@ -3065,6 +3061,9 @@ Changes</h2>
 			and added the 'text-box' [=shorthand=].
 			(Issues <a href="https://github.com/w3c/csswg-drafts/issues/8829">8829</a>
 			and <a href="https://github.com/w3c/csswg-drafts/issues/8696">8696</a>)
+		<li>Added ''trim-*'' prefix to 'text-box-trim' keywords
+			so that they make sense in the context of the 'text-box' shorthand.
+			(<a href="https://github.com/w3c/csswg-drafts/issues/10675">Issue 10675</a>)
 		<li>Use the innermost trim edge for 'text-box-trim'
 			when multiple ancestors request trimming.
 			(<a href="https://github.com/w3c/csswg-drafts/issues/5426">Issue 5426</a>)