[css-text-decor-4] Allow text-decoration-skip-self combinations. #2885

Author: fantasai

css-text-decor-4/Overview.bs

@@ -965,12 +965,12 @@ Skipping Spaces: the 'text-decoration-skip-self' property</h4>
 
 	<pre class="propdef">
 	Name: text-decoration-skip-self
-	Value: auto | skip-all | skip-underline | skip-overline | skip-line-through | no-skip
+	Value: auto | skip-all | [ skip-underline || skip-overline || skip-line-through ] | no-skip
 	Initial: auto
 	Applies to: all elements
 	Inherited: no
 	Percentages: N/A
-	Computed value: specified keyword(s)
+	Computed value: specified keyword(s) except for ''text-decoration-skip-self/skip-all'', see below
 	Animation type: discrete
 	</pre>
 
@@ -1018,6 +1018,11 @@ Skipping Spaces: the 'text-decoration-skip-self' property</h4>
 	to treat images as text when that is necessary,
 	for example when representing glyphs that are not encoded in Unicode.
 
+	The ''text-decoration-skip-self/skip-all'' keyword [=computed value|computes=]
+	to ''skip-underline skip-overline skip-line-through''.
+	Note, however, that this combination will <a href="https://www.w3.org/TR/cssom/#serializing-css-values">serialize</a>
+	as ''text-decoration-skip-self/skip-all'' (shortest serialization).
+
 <h4 id="text-decoration-skip-box-property">
 Skipping Spaces: the 'text-decoration-skip-box' property</h4>