GNU bug report logs - #10773
define-derived-mode/define-minor-mode to declare hook variables

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Message #40 received at 10773 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> jurta.org>
To: "Drew Adams" <drew.adams <at> oracle.com>
Cc: 10773 <at> debbugs.gnu.org
Subject: Re: bug#10773: set-variable can't change values of user options
Date: Wed, 22 Feb 2012 02:16:10 +0200

>> In my opinion, the best way to eliminate the distinction
>> between user variables (with the leading '*' in the docstring)
>> and customizable variables in 24.2 is:
>>
>> 1. Make `user-variable-p' an alias for `custom-variable-p'.
>>
>> 2. Remove the `user-variable-p' condition from `set-variable'.
>>
>> This will fix the reported case where `set-variable' can change
>> the value of `outline-mode-hook', but not `outline-minor-mode-hook';
>> and many other similar cases.
>
> And how will that help code that uses
> (defvar foo "*A user variable.")?

IIUC, the plan is to deprecate this feature, to not maintain two parallel
systems of user customizable variables.

> Users have always been able to set such a user variable using `set-variable'.

With the proposed change above, users can continue to set variables
using `set-variable'.

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