The key is never nil if it's invoked through the normal input path. The key name could be "" if mp_cmd.key_name==NULL. This should not happen, but there's no strong guarantee in input.c that it cannot happen, so whatever.
The key is never nil if it's invoked through the normal input path. The key name could be "" if mp_cmd.key_name==NULL. This should not happen, but there's no strong guarantee in input.c that it cannot happen, so whatever.