Squirrel: Use standard char token (#3256)

components/prism-squirrel.js

@@ -7,18 +7,11 @@ Prism.languages.squirrel = Prism.languages.extend('clike', {
 			greedy: true
 		}
 	],
-	'string': [
-		{
-			pattern: /(^|[^\\"'@])(?:@"(?:[^"]|"")*"(?!")|"(?:[^\\\r\n"]|\\.)*")/,
-			lookbehind: true,
-			greedy: true
-		},
-		{
-			pattern: /(^|[^\\"'])'(?:[^\\']|\\(?:[xuU][0-9a-fA-F]{0,8}|[\s\S]))'/,
-			lookbehind: true,
-			greedy: true
-		}
-	],
+	'string': {
+		pattern: /(^|[^\\"'@])(?:@"(?:[^"]|"")*"(?!")|"(?:[^\\\r\n"]|\\.)*")/,
+		lookbehind: true,
+		greedy: true
+	},
 
 	'class-name': {
 		pattern: /(\b(?:class|enum|extends|instanceof)\s+)\w+(?:\.\w+)*/,
@@ -34,6 +27,14 @@ Prism.languages.squirrel = Prism.languages.extend('clike', {
 	'punctuation': /[(){}\[\],;.]/
 });
 
+Prism.languages.insertBefore('squirrel', 'string', {
+	'char': {
+		pattern: /(^|[^\\"'])'(?:[^\\']|\\(?:[xuU][0-9a-fA-F]{0,8}|[\s\S]))'/,
+		lookbehind: true,
+		greedy: true
+	}
+});
+
 Prism.languages.insertBefore('squirrel', 'operator', {
 	'attribute-punctuation': {
 		pattern: /<\/|\/>/,

tests/languages/squirrel/char_feature.test

@@ -0,0 +1,11 @@
+'w'
+'\''
+'\x41' '\u0041' '\U00000041'
+
+----------------------------------------------------
+
+[
+	["char", "'w'"],
+	["char", "'\\''"],
+	["char", "'\\x41'"], ["char", "'\\u0041'"], ["char", "'\\U00000041'"]
+]

tests/languages/squirrel/string_feature.test

@@ -14,10 +14,6 @@ multiline verbatim string
     characters
 "
 
-'w'
-'\''
-'\x41' '\u0041' '\U00000041'
-
 ----------------------------------------------------
 
 [
@@ -29,9 +25,5 @@ multiline verbatim string
 	["string", "@\"I'm a verbatim string\""],
 	["string", "@\" I'm a\r\nmultiline verbatim string\r\n\""],
 
-	["string", "@\"\r\n    this is a multiline string\r\n    it will \"\"embed\"\" all the new line\r\n    characters\r\n\""],
-
-	["string", "'w'"],
-	["string", "'\\''"],
-	["string", "'\\x41'"], ["string", "'\\u0041'"], ["string", "'\\U00000041'"]
-]
+	["string", "@\"\r\n    this is a multiline string\r\n    it will \"\"embed\"\" all the new line\r\n    characters\r\n\""]
+]