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

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Message #9 received at 8857 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 8857 <at> debbugs.gnu.org
Subject: Re: bug#8857: display-buffer attempt to pop-up frame in batch mode
	causes	"Unknown terminal type" error
Date: Tue, 14 Jun 2011 11:16:16 +0200

> OK, this is not a very sensible example, but it illustrates the point.
> It's caused by display-buffer trying to pop-up a frame in batch-mode and
> is very recent.

Can you tell me where and why `display-buffer' is called?

> PS I forgot to say that I think display-buffer should not try to pop-up
> frames (or do anything at all?) in batch-mode. Or if it must give an
> error it should try to give a more helpful one than "Unknown terminal
> type".

In particular not with emacs -Q.  But I have no experience debugging
emacs with the batch option.  So before delving into this maybe you
could give me more information?

Note that while `pop-up-frames' has the optional value graphic-only
which should prevent Emacs from popping up frames on non-graphic
systems, that value is consistently overridden by applications that bind
`pop-up-frames' to t.  But I don't think that's related.

martin

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