Support end extension

Author: nicolasstucki

src/typescript/Scala.tmLanguage.ts

@@ -490,7 +490,7 @@ export const scalaTmLanguage: TmLanguage = {
           name: 'keyword.control.flow.end.scala'
         },
         {
-          match: `^\\s*(end)\\s+(?:(new)|(${idUpper}))${endOfLineMaybeWithComment}`,
+          match: `^\\s*(end)\\s+(?:(new|extension)|(${idUpper}))${endOfLineMaybeWithComment}`,
           captures: {
             '1': {
               name: 'keyword.declaration.end.scala'

tests/unit/#107.test.scala

@@ -7,6 +7,10 @@
 //  ^^^ keyword.declaration.end.scala
 //      ^^^ keyword.declaration.end.scala
 
+    end extension
+//  ^^^ keyword.declaration.end.scala
+//      ^^^^^^^^^ keyword.declaration.end.scala
+
     end if
 //  ^^^ keyword.control.flow.end.scala
 //      ^^ keyword.control.flow.end.scala