Re: Is it legal to set `help-char' to nil?

[YE Qianchuan <stool.ye@gmail.com>]

On 04/11/2013 06:59 PM, Michael Heerdegen wrote:
> I can reproduce this.  The error happens when loading "ehelp", here, in
> the definition of `electric-help-map':
>
> (define-key map (char-to-string help-char) 'electric-help-help)
Thanks for the explanation. It makes sense now.
>
> Similar examples are spread over diverse other elisp files.  So, we know
> now that Emacs indeed assumes that `help-char' is a character (and not
> nil), so nil is not allowed as a value.
OK, so it answered my question. nil is not legal for `help-char'.
>
> I don't have a better solution than to bind `help-char' to a different
> character.  You could also create a bug report - I think what you want
> could be made possible, but I don't know if emacs-dev would do it.
All the legal characters have been defined for other commands, or can't 
be used in terminal.
It's fine with me to just leave C-h for help in those cases.
Thank you.
>
> Regards,
>
> Michael.