[css-syntax] Whitespace is ignored in <An+B>, unless specified otherwise.

Author: SimonSapin

css-syntax/Overview.bs

@@ -2579,7 +2579,7 @@ The <var>An+B</var> microsyntax</h2>
 	allowing an author to easily indicate single elements
 	or all elements at regularly-spaced intervals in a list.
 
-	The <dfn>An+B</dfn> notation defines an integer step (<dfn>A</dfn>) and offset (<dfn>B</dfn>),
+	The <dfn export>An+B</dfn> notation defines an integer step (<dfn>A</dfn>) and offset (<dfn>B</dfn>),
 	and represents the <var>An+B</var>th elements in a list,
 	for every positive integer or zero value of <var>n</var>,
 	with the first element in the list having index 1 (not 0).
@@ -2743,6 +2743,7 @@ The <code>&lt;an+b></code> type</h3>
 		<sup>†</sup>: When a plus sign (+) precedes an ident starting with "n", as in the cases marked above,
 		there must be no whitespace between the two tokens,
 		or else the tokens do not match the above grammar.
+		Whitespace is valid (and ignored) between any other two tokens.
 
 	The clauses of the production are interpreted as follows:
 

css-syntax/Overview.html

@@ -4092,7 +4092,7 @@ <h2 class="heading settled heading" data-level=6 id=anb><span class=secno>6 </sp
 	allowing an author to easily indicate single elements
 	or all elements at regularly-spaced intervals in a list.
 
-<p>	The <dfn data-dfn-type=dfn data-noexport="" id=anb0>An+B<a class=self-link href=#anb0></a></dfn> notation defines an integer step (<dfn data-dfn-type=dfn data-noexport="" id=a>A<a class=self-link href=#a></a></dfn>) and offset (<dfn data-dfn-type=dfn data-noexport="" id=b>B<a class=self-link href=#b></a></dfn>),
+<p>	The <dfn data-dfn-type=dfn data-export="" id=anb0>An+B<a class=self-link href=#anb0></a></dfn> notation defines an integer step (<dfn data-dfn-type=dfn data-noexport="" id=a>A<a class=self-link href=#a></a></dfn>) and offset (<dfn data-dfn-type=dfn data-noexport="" id=b>B<a class=self-link href=#b></a></dfn>),
 	and represents the <var>An+B</var>th elements in a list,
 	for every positive integer or zero value of <var>n</var>,
 	with the first element in the list having index 1 (not 0).
@@ -4238,6 +4238,7 @@ <h3 class="heading settled heading" data-level=6.2 id=the-anb-type><span class=s
 		<sup>†</sup>: When a plus sign (+) precedes an ident starting with "n", as in the cases marked above,
 		there must be no whitespace between the two tokens,
 		or else the tokens do not match the above grammar.
+		Whitespace is valid (and ignored) between any other two tokens.
 
 <p>	The clauses of the production are interpreted as follows: