fix(latex) fix poly backtracking issue

joshgoebel · joshgoebel · commit d496052534bb · 2020-12-03T08:10:22.000-05:00
diff --git a/src/languages/latex.js b/src/languages/latex.js
@@ -172,7 +172,7 @@ export default function(hljs) {
   const BEGIN_ENV = function(envname, starts_mode) {
     return hljs.inherit(
       {
-        begin: '\\\\begin(?=\\s*\\r?\\n?\\s*\\{' + envname + '\\})',
+        begin: '\\\\begin(?=[ \t]*(\\r?\\n[ \t]*)?\\{' + envname + '\\})',
         keywords: {$pattern: /\\[a-zA-Z]+/, keyword: '\\begin'},
         relevance: 0,
       },

Original file line number	Diff line number	Diff line change
`@@ -172,7 +172,7 @@ export default function(hljs) {`
`172`	`172`	`const BEGIN_ENV = function(envname, starts_mode) {`
`173`	`173`	`return hljs.inherit(`
`174`	`174`	`{`
`175`		`- begin: '\\\\begin(?=\\s\\r?\\n?\\s\\{' + envname + '\\})',`
	`175`	`+ begin: '\\\\begin(?=[ \t](\\r?\\n[ \t])?\\{' + envname + '\\})',`
`176`	`176`	`keywords: {$pattern: /\\[a-zA-Z]+/, keyword: '\\begin'},`
`177`	`177`	`relevance: 0,`
`178`	`178`	`},`