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Re: Undocumented menu feature?

From: Jan Djärv
Subject: Re: Undocumented menu feature?
Date: Thu, 2 Oct 2014 18:50:24 +0200


2 okt 2014 kl. 17:46 skrev Sergey Organov <address@hidden>:

> Jan Djärv <address@hidden> writes:
>> Hi.
>> 2 okt 2014 kl. 16:34 skrev Sergey Organov <address@hidden>:
>>> Hello,
>>> I've asked this in help-gnu-emacs, but nobody seems to have a clue
>>> there. Hopefully some developer(s) knwow.
>>> Here is the reference:
>>> http://lists.gnu.org/archive/html/help-gnu-emacs/2014-10/msg00007.html
>>> And here is my original question:
>>> I suddenly found that my emacs (GNU Emacs 23.2.1, running on
>>> Debian/Gnome) is capable of "detaching" some sub-menus and putting them
>>> into separate frames. For example, if I click "File" in the main menu,
>>> submenu appears containing dashed line at the top, and if I click on
>>> that dashed line, entire "File" submenu appears in a separate frame.
>>> I can't find anything about the feature by googling for it. Could somebody
>>> please point me to relevant documentation?
>> We don't have Emacs specific documentation for this, it is a standard
>> Gtk+ feature. About to be deprecated in Gtk+ I think.
> Thanks, but first I don't see it in any other application but Emacs, and
> second it looks to be somehow controlled from within Emacs:
> Some of Emacs submenus do have it, and some don't. For example, in
> "Options", the "Line Wrapping in this Buffer" submenu has the dashed
> line, while neither "Mule (Multilingual Environment)" nor "Customize
> Emacs" have one.
> I can't figure any template, as some submenus of non-detachable menus
> could be detachable, and vice versa. Moreover, ["Tools" "Spell
> Checking"] has this active dashed line right in the middle (between 
> "Complete Word Fragment" and "Complete Word"), not at the top.

I don't have this, it mihgt be a Gtk theme issue.  I have dashed lines on all 
menus at the top.

> The latter makes one think it's some special kind of separator, but I
> fail to see something relevant in " Menu Separators."
> How do I control it from Emacs?

You don't.  As it is going away, we are not doing much with it. 

        Jan D.

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