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Re: Detachable shells in Emacs?

From: Neil T . Dantam
Subject: Re: Detachable shells in Emacs?
Date: Fri, 07 Sep 2012 22:08:15 -0400
User-agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (Goj┼Ź) APEL/10.8 Emacs/23.2 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO)

> I work from home occasionally, and so I'd like to be able to leave
> Emacs running at the office and resume working on it remotely, on my
> laptop, over an ssh tunnel.  But when I try to create a frame on my
> laptop's display, using "localhost:10.0" as the display, I get "X11
> connection rejected because of wrong authentication."

Likely, the XAUTHORITY used by emacs does not know how to talk to the
X connection forward by ssh.  I've had this problem when GDM makes
some random XAUTHORITY file under /var, which emacs will also use,
while SSH puts everything in ~/.Xauthority.  The following script is
what I use to forward emacs frames through SSH:


    #### Create a new emacs frame on $DISPLAY, setting xauthority properly

    ### Merge the xauth entry for $DISPLAY into emacs's xauthority
    # scrub out localhost from display, or xauth doesn't list it
    SCRUBBED_DISPLAY=`echo $DISPLAY | sed -e 's/^localhost:/:/'`
    if [ -n "$SCRUBBED_DISPLAY" ]; then
        emacsclient -e "(shell-command \"xauth add $CURRENT_XAUTH\")" > 

    ### New emacs frame
    exec emacsclient -e "(make-frame-on-display  \"$DISPLAY\")"


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