fix(livescript) fix potential catastrophic backtracking

joshgoebel · joshgoebel · commit dc45f7cd21fe · 2020-11-18T13:07:50.000-05:00
diff --git a/src/languages/livescript.js b/src/languages/livescript.js
@@ -81,7 +81,7 @@ function(hljs) {
         {
           // regex can't start with space to parse x / 2 / 3 as two divisions
           // regex can't start with *, and it supports an "illegal" in the main mode
-          begin: /\/(?![ *])(\\\/|.)*?\/[gim]*(?=\W)/
+          begin: /\/(?![ *])(\\.|[^\\\n])*?\/[gim]*(?=\W)/
         }
       ]
     },

Original file line number	Diff line number	Diff line change
`@@ -81,7 +81,7 @@ function(hljs) {`
`81`	`81`	`{`
`82`	`82`	`// regex can't start with space to parse x / 2 / 3 as two divisions`
`83`	`83`	`// regex can't start with *, and it supports an "illegal" in the main mode`
`84`		`- begin: /\/(?![ ])(\\\/\|.)?\/[gim]*(?=\W)/`
	`84`	`+ begin: /\/(?![ ])(\\.\|[^\\\n])?\/[gim]*(?=\W)/`
`85`	`85`	`}`
`86`	`86`	`]`
`87`	`87`	`},`