Grammar for J from Sublime Text package

.gitmodules

@@ -576,3 +576,6 @@
 [submodule "vendor/grammars/sublime-golo"]
 	path = vendor/grammars/sublime-golo
 	url = https://github.com/TypeUnsafe/sublime-golo
+[submodule "vendor/grammars/JSyntax"]
+	path = vendor/grammars/JSyntax
+	url = https://github.com/bcj/JSyntax

grammars.yml

@@ -48,6 +48,8 @@ vendor/grammars/IDL-Syntax:
 vendor/grammars/Isabelle.tmbundle:
 - source.isabelle.root
 - source.isabelle.theory
+vendor/grammars/JSyntax/:
+- source.j
 vendor/grammars/Julia.tmbundle:
 - source.julia
 vendor/grammars/LiveScript.tmbundle:

lib/linguist/languages.yml

@@ -1376,7 +1376,7 @@ J:
   type: programming
   extensions:
   - .ijs
-  tm_scope: none
+  tm_scope: source.j
   ace_mode: text
 
 JSON: