Stylus: Fixed comments breaking strings and URLs (#2361)

components/prism-stylus.js

@@ -1,6 +1,13 @@
 (function (Prism) {
 	var inside = {
-		'url': /url\((["']?).*?\1\)/i,
+		'comment': {
+			pattern: /(^|[^\\])(?:\/\*[\s\S]*?\*\/|\/\/.*)/,
+			lookbehind: true
+		},
+		'url': {
+			pattern: /url\((["']?).*?\1\)/i,
+			greedy: true
+		},
 		'string': {
 			pattern: /("|')(?:(?!\1)[^\\\r\n]|\\(?:\r\n|[\s\S]))*\1/,
 			greedy: true
@@ -78,6 +85,7 @@
 		'property-declaration': {
 			pattern: /((?:^|\{)([ \t]*))(?:[\w-]|\{[^}\r\n]+\})+(?:\s*:\s*|[ \t]+)[^{\r\n]*(?:;|[^{\r\n,](?=$)(?!(?:\r?\n|\r)(?:\{|\2[ \t]+)))/m,
 			lookbehind: true,
+			greedy: true,
 			inside: {
 				'property': {
 					pattern: /^[^\s:]+/,

tests/languages/stylus/property-declaration_feature.test

@@ -10,6 +10,12 @@ background-{foo}: bar;
 div
 	{foo} bar
 
+comment
+	content 'http://www.example.com' // comment
+	background url(http://example.com) /* comment */
+	background /* comment */ url("http://example.com")
+	content '/* this is string not comment */'
+
 ----------------------------------------------------
 
 [
@@ -44,6 +50,27 @@ div
 			]]
 		]],
 		" bar"
+	]],
+
+	["selector", ["comment"]],
+	["property-declaration", [
+		["property", ["content"]],
+		["string", "'http://www.example.com'"],
+		["comment", "// comment"]
+	]],
+	["property-declaration", [
+		["property", ["background"]],
+		["url", "url(http://example.com)"],
+		["comment", "/* comment */"]
+	]],
+	["property-declaration", [
+		["property", ["background"]],
+		["comment", "/* comment */"],
+		["url", "url(\"http://example.com\")"]
+	]],
+	["property-declaration", [
+		["property", ["content"]],
+		["string", "'/* this is string not comment */'"]
 	]]
 ]