GNU bug report logs - #16257
24.3.50; calendar-cursor-to-visible-date needs set-window-point

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Keith David Bershatsky <esq <at> lawlist.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; calendar-cursor-to-visible-date needs set-window-point
Date: Wed, 25 Dec 2013 18:20:57 -0800

Happy Holidays !!!

Here is the thread on stackoverflow that provides a working example of the problem, and a working solution:

http://stackoverflow.com/questions/20776564/how-to-use-calendar-cursor-to-visible-date-without-switching-to-calendar

Without adding `set-window-point` to the function `calendar-cursor-to-visible-date`, functions like `with-current-buffer` and `set-buffer` do not work properly.

From another window, it should be possible to use `calendar-cursor-to-visible-date` without actually switching to that "*Calendar*" buffer.

Thanks,

Keith

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In GNU Emacs 24.3.50.1 (x86_64-apple-darwin10.8.0, NS apple-appkit-1038.36)
 of 2013-10-05 on MP.local
Bzr revision: 114534 monnier <at> iro.umontreal.ca-20131005183708-jfv7jyagzpkqkljx
Windowing system distributor `Apple', version 10.3.1038
Configured using:
 `configure --with-ns'

Important settings:
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Major mode: Org-Agenda Month Ddl Grid

Minor modes in effect:
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Recent input:
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<C-M-s-right> <C-M-s-left> <C-M-s-left> <C-M-s-right> 
<C-M-s-right> <C-M-s-left> <C-M-s-left> <escape> x 
r e p o <escape> x r p <backspace> e p o r t - e m 
a c s - b u g <return>

Recent messages:
Done.
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call-interactively: Buffer is read-only: #<buffer *Org Agenda*>
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Message #12 received at 16257-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Keith David Bershatsky <esq <at> lawlist.com>
Cc: 16257-done <at> debbugs.gnu.org
Subject: Re: bug#16257: 24.3.50;
 calendar-cursor-to-visible-date needs set-window-point
Date: Fri, 03 Jan 2014 17:25:09 -0500

tags 16257 notabug
thanks

> Here is the thread on stackoverflow that provides a working example of
> the problem, and a working solution:

> http://stackoverflow.com/questions/20776564/how-to-use-calendar-cursor-to-visible-date-without-switching-to-calendar

The question is not clear.  E.g.:

   "I would like the function to work without actually switching to the
   calendar window -- i.e., it should work even when the buffer is buried."

While we clearly can't select the calendar window if the calendar is
not displayed, I don't see why that would make it undesirable to
temporarily select that window when it does exist.  E.g.

   (with-selected-window (or (get-buffer-window (current-buffer) 0)
                             (selected-window))
     (calendar-cursor-to-visible-date date))

Of course, if there are various windows displaying that buffer, things
are more interesting.

> Without adding `set-window-point` to the function
> `calendar-cursor-to-visible-date`, functions like
> `with-current-buffer` and `set-buffer` do not work properly.

Those work just fine (although they don't quite do what you think they do).

> From another window, it should be possible to use
> `calendar-cursor-to-visible-date` without actually switching to that
> "*Calendar*" buffer.

Here I lost you again.  calendar-cursor-to-visible-date works inside the
calendar buffer, so you can't use it without switching to the
*Calendar* buffer.  But that's unrelated to whether or not you select
the corresponding window (if any).


        Stefan

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