Add support for regular expression data (#3441)

samples/Regular Expression/modeline-emacs.regexp

@@ -0,0 +1,19 @@
+-\*-
+(?:
+	\s*
+	(?= [^:;\s]+ \s* -\*-)
+	|
+	(?:
+		.*?[;\s]
+		|
+		(?<=-\*-)
+	)
+	mode\s*:\s*
+)
+([^:;\s]+)
+
+(?=
+	[\s;] | (?<![-*]) -\*-
+)
+.*?
+-\*-

samples/Regular Expression/modeline-vim.regexp

@@ -0,0 +1,27 @@
+(?:
+	(?:\s|^)
+	vi
+	(?:m[<=>]?\d+|m)?
+	|
+	[\t\x20]
+	ex
+)
+(?=
+	: (?=\s* set? \s [^\n:]+ :) |
+	: (?!\s* set? \s)
+)
+
+(?:
+	(?:\s|\s*:\s*)
+	\w*
+	(?:
+		\s*=
+		(?:[^\n\\\s]|\\.)*
+	)?
+)*
+
+[\s:]
+(?:filetype|ft|syntax)
+\s*=
+(MODE_NAME_HERE)
+(?=\s|:|$)

samples/Regular Expression/ordinal.regex

@@ -0,0 +1 @@
+\b(\d*1[1-3]th|\d*0th|(?:(?!11st)\d)*1st|\d*2nd|(?:(?!13rd)\d*)3rd|\d*[4-9]th)\b

samples/Regular Expression/url.regex

@@ -0,0 +1 @@
+/^([^\/#\?]*:?\/\/)?(\/?(?:[^\/#\?]+\/)*)?([^\/#\?]+)?(?:\/(?=$))?(\?[^#]*)?(#.*)?$/