Re: Specifying plist requirements in defcustom?

[Lennart Borgman (gmail)]

Drew Adams wrote:
>>> (defcustom corext-enlistments nil
>>>   "..."
>>>   :type
>>>   '(repeat
>>>     (restricted-sexp
>>>      :match-alternatives
>>>      ((lambda (x) (and (symbolp x)
>>>                        (let ((pl (symbol-plist x)))
>>>                          (and (plist-get pl 'branch)
>>>                               (plist-get pl 'drive)
>>>                               (plist-get pl 'path)))))))))
>>>
>> From what I could tell, this worked, but I was also to have a user-
>> friendly customization interface when a user, say, clicked customoize
>> corext-enlistments.  I'd like a prompt for the symbol-name, and the
>> individual property list values: branch, drive, and path.  It seems
>> that to acheive something like this, I'd need to just make them
>> alists....
> 
> You'll have to extend Customize to get that, AFAIK. Or write your own command 
> to
> customize this particular option. Customize doesn't really guide you with
> prompts and such. Customize could use a little more guidance, especially for
> complex structures such as this one.

I do not think that you have to extend Customize. Writing a new widget
type should be enough.

> There are a lot of ways in which Customize could be improved, but no one seems
> to want to work on it. Many Emacs developers have, I think, written it off as
> being either (1) superfluous (~real Emacs users don't use Customize~, meaning
> that they don't use it) or (2) too difficult/bothersome (the Customize code is
> hard to follow). No flames please - that's just one person's impression.
> 
> 
> 
>