patch 7.4.2110
Problem: When there is an CmdUndefined autocmd then the error for a missing
command is E464 instead of E492. (Manuel Ortega)
Solution: Don't let the pointer be NULL.
diff --git a/src/testdir/test_usercommands.vim b/src/testdir/test_usercommands.vim
index a3c5b95..e6c3196 100644
--- a/src/testdir/test_usercommands.vim
+++ b/src/testdir/test_usercommands.vim
@@ -46,3 +46,33 @@
delcommand MyQCmd
unlet g:mods
endfunction
+
+func Test_Ambiguous()
+ command Doit let g:didit = 'yes'
+ command Dothat let g:didthat = 'also'
+ call assert_fails('Do', 'E464:')
+ Doit
+ call assert_equal('yes', g:didit)
+ Dothat
+ call assert_equal('also', g:didthat)
+ unlet g:didit
+ unlet g:didthat
+
+ delcommand Doit
+ Do
+ call assert_equal('also', g:didthat)
+ delcommand Dothat
+endfunc
+
+func Test_CmdUndefined()
+ call assert_fails('Doit', 'E492:')
+ au CmdUndefined Doit :command Doit let g:didit = 'yes'
+ Doit
+ call assert_equal('yes', g:didit)
+ delcommand Doit
+
+ call assert_fails('Dothat', 'E492:')
+ au CmdUndefined * let g:didnot = 'yes'
+ call assert_fails('Dothat', 'E492:')
+ call assert_equal('yes', g:didnot)
+endfunc