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bug#3566: 23.0.94; explain why not to use group defined by define-minor-

From: Lars Magne Ingebrigtsen
Subject: bug#3566: 23.0.94; explain why not to use group defined by define-minor-mode
Date: Tue, 12 Jul 2011 16:07:41 +0200
User-agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.50 (gnu/linux)

"Drew Adams" <address@hidden> writes:

> In the Elisp manual and in the doc string for define-minor-mode, we
> are told not to use the custom group that is automatically defined for
> the mode variable, unless we have explicitly used defgroup to define
> the group.
> Why? Please provide some explanation.
> If you use `define-globalized-minor-mode', then the generated group
> (with the name of the _local_ minor mode) is recognized by
> `customize-group', and the mode variable for the global mode is
> recognized by `customize-variable'.
> Why is it inadvisable to use the same generated group for other
> defcustoms without explicitly defining the group? What negative
> consequences arise if that is attempted? Please explain in the doc.
> The Elisp manual, node Defining Minor Modes, seems to refer you to
> node `Group Definitions' for the explanation of this warning, but
> there is no such explanation there:
> "*Warning:* don't use this default group name unless you have
> written a `defgroup' to define that group properly. *Not
> Group Definitions."

Yes, this seems rather puzzling.  Anybody know the reason?

(domestic pets only, the antidote for overdose, milk.)
  bloggy blog http://lars.ingebrigtsen.no/

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