Match one of the characters specified in the character set. Interpret x-y as the set of characters between range x and y, inclusively. The following escaped characters are interpreted as single special characters: \n, \r, \b, \t, \f, \uXXXX, and \u{XXXXXX}. To get ], \, or - you must escape them with \.
+Match one of the characters specified in the character set. Interpret x-y as the set of characters between range x and y, inclusively. The following escaped characters are interpreted as single special characters: \n, \r, \b, \t, \f, \uXXXX, and \u{XXXXXX}. To get ] or \ you must escape them with \. To get - you must escape it with \ too, except for the case when - is the first or last character in the set.
You can also include all characters matching Unicode properties (general category, boolean, or enumerated including scripts and blocks) with \p{PropertyName} or \p{EnumProperty=Value}. (You can invert the test with \P{PropertyName} or \P{EnumProperty=Value}).
@@ -90,6 +90,8 @@ UNICODE_ID : [\p{Alpha}\p{General_Category=Other_Letter}] [\p{Alnum}\p{General_C EMOJI : [\u{1F4A9}\u{1F926}] ; // note Unicode code points > U+FFFF DASHBRACK : [\-\]]+ ; // match - or ] one or more times + +DASH : [---] ; // match a single -, i.e., "any character" between - and - (note first and last - not escaped)