C-like: Regexp simplification + don't use captures if not needed

components/prism-clike.js

@@ -10,18 +10,18 @@ Prism.languages.clike = {
 		}
 	],
 	'string': {
-		pattern: /(["'])(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
+		pattern: /(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
 		greedy: true
 	},
 	'class-name': {
-		pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/i,
+		pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[\w.\\]+/i,
 		lookbehind: true,
 		inside: {
-			punctuation: /(\.|\\)/
+			punctuation: /[.\\]/
 		}
 	},
-	'keyword': /\b(if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
-	'boolean': /\b(true|false)\b/,
+	'keyword': /\b(?:if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
+	'boolean': /\b(?:true|false)\b/,
 	'function': /[a-z0-9_]+(?=\()/i,
 	'number': /\b-?(?:0x[\da-f]+|\d*\.?\d+(?:e[+-]?\d+)?)\b/i,
 	'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,

prism.js

@@ -661,18 +661,18 @@ Prism.languages.clike = {
 		}
 	],
 	'string': {
-		pattern: /(["'])(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
+		pattern: /(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
 		greedy: true
 	},
 	'class-name': {
-		pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/i,
+		pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[\w.\\]+/i,
 		lookbehind: true,
 		inside: {
-			punctuation: /(\.|\\)/
+			punctuation: /[.\\]/
 		}
 	},
-	'keyword': /\b(if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
-	'boolean': /\b(true|false)\b/,
+	'keyword': /\b(?:if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
+	'boolean': /\b(?:true|false)\b/,
 	'function': /[a-z0-9_]+(?=\()/i,
 	'number': /\b-?(?:0x[\da-f]+|\d*\.?\d+(?:e[+-]?\d+)?)\b/i,
 	'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,