Re: single-key-description no good for Japanese and Chinese chars

[Jason Rumney]

> People didn't care for that suggestion, so I will continue to test the key
> itself. Perhaps I could test the key somehow with `generic-char-p' (how?),
>   
> but, as Stefan pointed out, there are also other keys that cannot be
> trivially converted to chars.
>   
How about:  (char-valid-p keymap-entry)

Since all self-insert-command keys must be valid chars if inserting them 
is going to work.
This way you don't need to test for generic-char-p, since char-valid-p 
returns nil for generic characters unless you give it a non-nil second arg.