Avoid matching constants without majuscules

Author: Alhadis

grammars/javascript.cson

@@ -1168,7 +1168,7 @@
   }
   {
     'match': '''(?x)
-      ((?<!\\.|[\\w$])\\$*\\b(?:[A-Z_$][A-Z0-9_$]*)\\b\\$*)(?!\\s*:)
+      ((?<!\\.|[\\w$])(?![_\\$]+[^A-Z0-9_$])\\$*\\b(?:[A-Z_$][A-Z0-9_$]*)\\b\\$*)(?!\\s*:)
       |
       (?<=\\?)(?:\\s*)([A-Z_$][A-Z0-9_$]*)(?=\\s*:)
     '''

spec/javascript-spec.coffee

@@ -468,6 +468,11 @@ describe "Javascript grammar", ->
         {tokens} = grammar.tokenizeLine(constant)
         expect(tokens[0]).toEqual value: constant, scopes: ['source.js', 'constant.other.js']
 
+    it "doesn't tokenise constants without alphabetic characters", ->
+      for name in ['$_', '$', '_', '$_$_$_$___$___$____$']
+        {tokens} = grammar.tokenizeLine(name)
+        expect(tokens[0]).toEqual value: name, scopes: ['source.js']
+
     it "tokenizes variables declared using `const` as constants", ->
       {tokens} = grammar.tokenizeLine('const myCoolVar = 42;')
       expect(tokens[0]).toEqual value: 'const', scopes: ['source.js', 'storage.modifier.js']