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

From: Glenn Morris <[email-masked]>
Date: Wed, 15 Jun 2011 15:40:31 -0400

Stefan Monnier wrote:

> "batch mode" and "server mode" are *very* closely related.  So I'd stay
> away from any attempt to special case "batch mode".

FWIW, `noninteractive' is nil in "server mode" (ie --daemon) but t in
"batch mode", so the two cases are easily distinguished.

Since emacs.c has:

  if (!noninteractive)
    init_display ();    /* Determine terminal type.  Calls init_sys_modes.  */

I've gone back to thinking that display-buffer can do nothing useful in
batch mode.