GNU bug report logs - #20260
24.4.1; Triple-clicking selects and deselects the line in weird situations

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#20260: closed (24.4.1; Triple-clicking selects and deselects
 the line in weird situations)
Date: Mon, 13 Apr 2015 14:19:02 +0000

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Your message dated Mon, 13 Apr 2015 10:18:02 -0400
with message-id <jwvmw2cm7u0.fsf-monnier+emacsbugs <at> gnu.org>
and subject line Re: bug#20260: 24.4.1; Triple-clicking selects and deselects the line in weird situations
has caused the debbugs.gnu.org bug report #20260,
regarding 24.4.1; Triple-clicking selects and deselects the line in weird situations
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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20260: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20260
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From: Jorgen Schaefer <contact <at> jorgenschaefer.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.4.1;
 Triple-clicking selects and deselects the line in weird situations
Date: Sun, 05 Apr 2015 00:29:21 +0200

Hello!
We came across a weird behavior in Emacs.

The graphical version (in X) will select a line if the mouse is
triple-clicked. Under certain situations, it will select but immediately
deselect the line again.

Reproduction:

Triple-click on any line in any buffer. Notice that Emacs selects the
whole line, and leaves it selected.

Evaluate the following code.

(defun repro-filter (fun beg end delete)
  (let ((string (funcall fun beg end delete)))
    (with-temp-buffer
      (insert "."))
    string))

(with-current-buffer (get-buffer-create "*Bug*")
  (set (make-local-variable 'filter-buffer-substring-functions)
       '(repro-filter))
  (insert "Hello, World!\n")
  (pop-to-buffer (current-buffer)))

Triple-click on the "World" in the *Bug* buffer. Notice that Emacs
selects the whole line only momentarily, and then deselects it again
immediately.

I expected the line to stay selected like without this piece of code.

This bug was not present in 24.3.

Regards,
Jorgen

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Vasilij Schneidermann <v.schneidermann <at> gmail.com>
Cc: contact <at> jorgenschaefer.de, 20260-done <at> debbugs.gnu.org
Subject: Re: bug#20260: 24.4.1;
 Triple-clicking selects and deselects the line in weird situations
Date: Mon, 13 Apr 2015 10:18:02 -0400

>> The patch does indeed fix the test case for me, but the real use case
>> stays unchanged.

Since it fixes Jorgen's test case I installed the patch into master, and
I'm closing this bug.

> Hmm... Can you provide another recipe that still isn't fixed with the patch?

If/when you find another recipe to reproduce your problem, just make
a new bug report (or re-open this one).

Thank you,


        Stefan

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