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bug#9754: Issue with Emacs 23.4

From: Ken Brown
Subject: bug#9754: Issue with Emacs 23.4
Date: Thu, 17 May 2012 07:04:13 -0400
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20120327 Thunderbird/11.0.1

On 5/16/2012 9:19 PM, Stefan Monnier wrote:
At least it doesn't seem "obviously correct" to me: what if the user
opens up an X frame after starting "emacs -nw"?
The hang arises when emacs is started without an X server present or at
least with DISPLAY not set.  I don't see how a user would be able to
open an X frame at a later point in time in that situation (or
reasonable expect he might be able to).

Easy: M-x make-frame-on-display.
Or start an emacs server and then connect to the server from an
emacsclient with a DISPLAY set (which ends up calling
make-frame-on-display as well, of course).

So maybe the test

  if (inhibit_window_system || !display_arg)

in my patch should be replaced by

  if (!x_in_use)


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