vim-patch:7.4.552

Problem:    Langmap applies to Insert mode expression mappings.
Solution:   Check for Insert mode. (Daniel Hahler)

https://code.google.com/p/vim/source/detail?r=v7-4-552

src/nvim/getchar.c

@@ -1775,7 +1775,7 @@ static int vgetorpeek(int advance)
             if (c1 == K_SPECIAL)
               nolmaplen = 2;
             else {
-              LANGMAP_ADJUST(c1, TRUE);
+              LANGMAP_ADJUST(c1, (State & INSERT) == 0);
               nolmaplen = 0;
             }
             /* First try buffer-local mappings. */