From f3ca6625821689f8fa35e2cabc9873fd561b54d3 Mon Sep 17 00:00:00 2001
From: MatejKastak <matej.kastak@gmail.com>
Date: Fri, 18 Aug 2023 17:00:26 +0200
Subject: [PATCH] fix: Incorrect syntax on regexp end

Fox example:
```yara
cuckoo.sync.mutex(/test\\/)
```
The last `/` was not detected as a end of string, because we only look
at the preceding character is not escaping the end of regexp. But what
if there is a another escape.
---
 editors/vscode/language/yara.tmLanguage.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/editors/vscode/language/yara.tmLanguage.json b/editors/vscode/language/yara.tmLanguage.json
index ee45a7e..9d91426 100644
--- a/editors/vscode/language/yara.tmLanguage.json
+++ b/editors/vscode/language/yara.tmLanguage.json
@@ -462,7 +462,7 @@
     "regexp-strings": {
       "name": "string.regexp.yara",
       "begin": "(?<!/)(/)(?!/|\\n)",
-      "end": "(?<!\\\\)(/)(i?s?)|((?:\\\\/)?[^/]*\\n)",
+      "end": "(?<![^\\\\]\\\\)(/)(i?s?)|((?:\\\\/)?[^/]*\\n)",
       "beginCaptures": {
         "1": {"name": "punctuation.definition.regexp.begin.yara"}
       },