Don't sanity-check commands with (define-key KEYMAP [remap COMMAND1] COMMAND2). lisp/ChangeLog addition: 2012-09-05 Aidan Kehoe <kehoea@parhasard.net> * keymap.c: * keymap.c (Fdefine_key): * keymap.c (remap_command): * keymap.c (Fremap_command): Don't sanity-check commands to be remapped with the (define-key KEYMAP [remap COMMAND1] COMMAND2) syntax, for better compatibility with GNU Emacs. Thank you Robert Pluim!