Fix s:ExprCol() sometimes go into infinity loop when calculating indent

shirohana · shirohana · commit 088b268f785e · 2018-07-28T19:30:37.000+08:00
diff --git a/indent/javascript.vim b/indent/javascript.vim
@@ -204,7 +204,7 @@ function s:ExprCol()
     return 1
   endif
   let bal = 0
-  while s:SearchLoop('[{}?:]','bW',s:skip_expr)
+  while s:SearchLoop('[{}?:]','bW',s:skip_expr) && bal >= 0
     if s:LookingAt() == ':'
       let bal -= !search('\m:\%#','bW')
     elseif s:LookingAt() == '?'
