vim-patch:7.4.773 #3066

Problem:  'langmap' is used in command-line mode when checking for mappings.
Solution: Do not use 'langmap' in command-line mode. (Larry Velazquez)

Original patch:
  https://code.google.com/p/vim/source/detail?r=5b1eefbf9a532f32a66fa13abbd671488aaafd5c

test/functional/legacy/mapping_spec.lua

@@ -23,16 +23,27 @@ describe('mapping', function()
     execute('set langmap=+{ langnoremap')
     feed('o+<esc>')
 
-    -- expr mapping with langmap.
+    -- Insert mode expr mapping with langmap.
     execute('inoremap <expr> { "FAIL_iexplangmap"')
     feed('o+<esc>')
 
+    -- langmap should not get remapped in cmdline mode.
+    execute('cnoremap { FAIL_clangmap')
+    feed('o+<esc>')
+    execute('cunmap {')
+
+    -- cmdline mode expr mapping with langmap.
+    execute('cnoremap <expr> { "FAIL_cexplangmap"')
+    feed('o+<esc>')
+    execute('cunmap {')
 
     -- Assert buffer contents.
     expect([[
       test starts here:
       vim 
       +
+      +
+      +
       +]])
   end)
 end)