[javascript mode] Fix potentially-exponential regexp

marijnh · marijnh · commit 55d033390711 · 2020-10-09T15:38:39.000+02:00
diff --git a/mode/javascript/javascript.js b/mode/javascript/javascript.js
@@ -126,7 +126,7 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
           var kw = keywords[word]
           return ret(kw.type, kw.style, word)
         }
-        if (word == "async" && stream.match(/^(\s|\/\*.*?\*\/)*[\[\(\w]/, false))
+        if (word == "async" && stream.match(/^(\s|\/\*([^*]|\*(?!\/))*?\*\/)*[\[\(\w]/, false))
           return ret("async", "keyword", word)
       }
       return ret("variable", "variable", word)

Original file line number	Diff line number	Diff line change
`@@ -126,7 +126,7 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {`
`126`	`126`	`var kw = keywords[word]`
`127`	`127`	`return ret(kw.type, kw.style, word)`
`128`	`128`	`}`
`129`		`- if (word == "async" && stream.match(/^(\s\|\/\.?\\/)[\[\(\w]/, false))`
	`129`	`+ if (word == "async" && stream.match(/^(\s\|\/\([^]\|\(?!\/))?\\/)[\[\(\w]/, false))`
`130`	`130`	`return ret("async", "keyword", word)`
`131`	`131`	`}`
`132`	`132`	`return ret("variable", "variable", word)`