[css-shadow-parts-1] allow spaces in valid #2412

Author: fergald

css-shadow-parts-1/Overview.bs

@@ -327,8 +327,8 @@ Rules for parsing part mappings {#parsing-mapping}
 ----------------------------------------------
 
 A <dfn export>valid part mapping</dfn> is a [=pair=] of tokens
-separated by a U+003A COLON charater,
-with no other characters (e.g. no space characters).
+separated by a U+003A COLON charater
+and any number of space characters before or after the U+003A COLON
 The tokens must not contain U+003A COLON or U+002C COMMA characters.
 
 The rules for parsing a part mapping are as follows:
@@ -357,8 +357,8 @@ Rules for parsing a list of part mappings {#parsing-mapping-list}
 ----------------------------------------------
 
 A <dfn export>valid list of part mappings</dfn> is a number of valid part mappings
-separated by a U+002C COMMA charater,
-with no other characters (e.g. no space characters).
+separated by a U+002C COMMA charater
+and any number of space characters before or after the U+002C COMMA
 
 The rules for parsing a list of part mappings are as follow: