Handle the "/" followed by "]" to ensure it not being treated as regex

Fixes #580

Author: sheetalkamat

TypeScript.YAML-tmLanguage

@@ -1245,7 +1245,7 @@ repository:
     - name: keyword.operator.arithmetic.ts
       match: '%|\*|/|-|\+'
     # capture the arithmetic sign followed by variable or parenthesized expression so that it is not interpreted as regex
-    - match: (?<=[_$[:alnum:])])\s*(/)(?![/*])
+    - match: (?<=[_$[:alnum:])\]])\s*(/)(?![/*])
       captures:
         '1': { name: keyword.operator.arithmetic.ts }
 
@@ -2033,7 +2033,7 @@ repository:
       - include: '#regexp'
     # Check if complete regexp syntax
     - name: string.regexp.ts
-      begin: (?<![_$[:alnum:])])\/(?![\/*])(?=(?:[^\/\\\[]|\\.|\[([^\]\\]|\\.)+\])+\/(?![\/*])[gimuy]*(?!\s*[a-zA-Z0-9_$]))
+      begin: (?<![_$[:alnum:])\]])\/(?![\/*])(?=(?:[^\/\\\[]|\\.|\[([^\]\\]|\\.)+\])+\/(?![\/*])[gimuy]*(?!\s*[a-zA-Z0-9_$]))
       beginCaptures:
         '0': {name: punctuation.definition.string.begin.ts}
       end: (/)([gimuy]*)

TypeScript.tmLanguage

@@ -3868,7 +3868,7 @@
           </dict>
           <dict>
             <key>match</key>
-            <string>(?&lt;=[_$[:alnum:])])\s*(/)(?![/*])</string>
+            <string>(?&lt;=[_$[:alnum:])\]])\s*(/)(?![/*])</string>
             <key>captures</key>
             <dict>
               <key>1</key>
@@ -5738,7 +5738,7 @@
             <key>name</key>
             <string>string.regexp.ts</string>
             <key>begin</key>
-            <string>(?&lt;![_$[:alnum:])])\/(?![\/*])(?=(?:[^\/\\\[]|\\.|\[([^\]\\]|\\.)+\])+\/(?![\/*])[gimuy]*(?!\s*[a-zA-Z0-9_$]))</string>
+            <string>(?&lt;![_$[:alnum:])\]])\/(?![\/*])(?=(?:[^\/\\\[]|\\.|\[([^\]\\]|\\.)+\])+\/(?![\/*])[gimuy]*(?!\s*[a-zA-Z0-9_$]))</string>
             <key>beginCaptures</key>
             <dict>
               <key>0</key>

TypeScriptReact.tmLanguage

@@ -3814,7 +3814,7 @@
           </dict>
           <dict>
             <key>match</key>
-            <string>(?&lt;=[_$[:alnum:])])\s*(/)(?![/*])</string>
+            <string>(?&lt;=[_$[:alnum:])\]])\s*(/)(?![/*])</string>
             <key>captures</key>
             <dict>
               <key>1</key>
@@ -5684,7 +5684,7 @@
             <key>name</key>
             <string>string.regexp.tsx</string>
             <key>begin</key>
-            <string>(?&lt;![_$[:alnum:])])\/(?![\/*])(?=(?:[^\/\\\[]|\\.|\[([^\]\\]|\\.)+\])+\/(?![\/*])[gimuy]*(?!\s*[a-zA-Z0-9_$]))</string>
+            <string>(?&lt;![_$[:alnum:])\]])\/(?![\/*])(?=(?:[^\/\\\[]|\\.|\[([^\]\\]|\\.)+\])+\/(?![\/*])[gimuy]*(?!\s*[a-zA-Z0-9_$]))</string>
             <key>beginCaptures</key>
             <dict>
               <key>0</key>

tests/baselines/Issue580.baseline.txt

@@ -0,0 +1,40 @@
+original file
+-----------------------------------
+(a[0] / 2) / (2)
+-----------------------------------
+
+Grammar: TypeScript.tmLanguage
+-----------------------------------
+>(a[0] / 2) / (2)
+ ^
+ source.ts meta.brace.round.ts
+  ^
+  source.ts variable.other.readwrite.ts
+   ^
+   source.ts meta.array.literal.ts meta.brace.square.ts
+    ^
+    source.ts meta.array.literal.ts constant.numeric.decimal.ts
+     ^
+     source.ts meta.array.literal.ts meta.brace.square.ts
+      ^
+      source.ts
+       ^
+       source.ts keyword.operator.arithmetic.ts
+        ^
+        source.ts
+         ^
+         source.ts constant.numeric.decimal.ts
+          ^
+          source.ts meta.brace.round.ts
+           ^
+           source.ts
+            ^
+            source.ts keyword.operator.arithmetic.ts
+             ^
+             source.ts
+              ^
+              source.ts meta.brace.round.ts
+               ^
+               source.ts constant.numeric.decimal.ts
+                ^
+                source.ts meta.brace.round.ts

tests/cases/Issue580.ts

@@ -0,0 +1 @@
+(a[0] / 2) / (2)