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From: jrwats <jrwats@gmail.com>
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Subject: Re: Specifying plist requirements in defcustom?
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> IIUYC, you want a repetition of symbols, each of which must have non-nil
> properties `branch', `drive', and `path'.
yep

> (defcustom corext-enlistments nil
> =A0 "..."
> =A0 :type
> =A0 '(repeat
> =A0 =A0 (restricted-sexp
> =A0 =A0 =A0:match-alternatives
> =A0 =A0 =A0((lambda (x) (and (symbolp x)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(let ((pl (symbol-plist x)=
))
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(and (plist-get pl 'br=
anch)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 (plist-get pl=
 'drive)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 (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....