GNU bug report logs - #20538
24.4; Attempt to delete a surrogate minibuffer frame

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Message #17 received at 20538 <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: Roland Winkler <winkler <at> gnu.org>, martin rudalics <rudalics <at> gmx.at>
Cc: 20538 <at> debbugs.gnu.org
Subject: RE: bug#20538: 24.4; Attempt to delete a surrogate minibuffer frame
Date: Sun, 10 May 2015 13:17:43 -0700 (PDT)

> emacs -Q foo bar
> M-x ediff-buffers ; to compare buffers foo and bar
> ; select buffer foo
> 
> C-x 5 2 ; display buffer foo in a 2nd window in new frame

I was going to guess that it had something to do with having
one of the compared buffers in a separate frame, i.e., two
frames showing a buffer being compared.

That's been problematic all along, AFAIK.  It can make Ediff
tremble in the knees.  Especially if you do something like this:

> M-x delete-frame

That kind of thing can also result in Ediff screaming that
you've killed one of its relatives.

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