Subject: bug#37097: 27.0.50; Opening a "large file" with `emacsclient -c' does not create a frame

From: Eli Zaretskii <[email-masked]>
Date: Thu, 07 Nov 2019 19:21:54 +0200

> Date: Tue, 20 Aug 2019 17:44:33 +0300
> From: Eli Zaretskii <[email-masked]>
> Cc: [email-masked]
> 
> > 1. Create a large enough file:
> > 
> > dd if=/dev/zero of=foobar bs=1024 count=10000
> > 
> > 2. Start emacs daemon (with a custom socket to avoid colliding with an
> >    existing daemon):
> > 
> > emacs -Q --daemon=unmodified
> > 
> > 3. Open the large file with emacsclient:
> > 
> > emacsclient -c --socket-name=unmodified foobar
> > 
> > (In all:
> > 
> > dd if=/dev/zero of=foobar bs=1024 count=10000
> > emacs -Q --daemon=unmodified
> > emacsclient -c --socket-name=unmodified foobar
> > 
> > )
> > 
> > * Expected result:
> > 
> > 2. An emacs daemon is started.
> > 
> > 3. A new frame is created with a dialog asking something like:
> > 
> > file foobar is large (nnn), really open? (y)es or (n)o or (l)iterally
> > 
> > * Actual result:
> > 
> > 2. An emacs daemon is started.
> > 
> > 3. No frame is created; the terminal just displays the usual
> >    "emacsclient message" (Waiting for Emacs...) and does nothing. The
> >    emacsclient can be normally killed with C-c (without killing the
> >    daemon).
> 
> This works in Emacs 26, so I'm guessing this is another consequence of
> fixing bug#24218, where we now create the frame only after visiting
> the file.  So when we ask the question, we have no usable frame to ask
> it in.

Please try the latest master, I hope this is now solved.