GNU bug report logs - #8857
display-buffer attempt to pop-up frame in batch mode causes "Unknown terminal type" error

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From: martin rudalics <rudalics <at> gmx.at>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 8857 <at> debbugs.gnu.org
Subject: bug#8857: display-buffer attempt to pop-up frame in batch mode causes	"Unknown terminal type" error
Date: Tue, 14 Jun 2011 19:56:32 +0200

> I guess because pop-up-frames defaults to nil in Emacs 23.

Emacs 23 could pop up new frame provided the selected frame isn't
"usable".

> But in the trunk, a default Emacs may now pop-up a frame if it thinks it
> necessary.

I only tried to mimic Emacs 23 here.  So if the original frame cannot be
used it does try to pop up a new one.  Doesn't Emacs make an invisible
frame in batch mode?

Maybe the problem happens because I now load window.el _before_
files.el.  So in Emacs 23 files.el maybe tried to display a buffer but
failed silently.  What happens generally in batch mode when you call
`display-buffer', for example, during a backtrace?

martin

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