Re: Detachable shells in Emacs?

[Neil T. Dantam <ntd@gatech.edu>]

> 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:

    #!/bin/sh

    #### 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
        CURRENT_XAUTH=`xauth list $SCRUBBED_DISPLAY`
        emacsclient -e "(shell-command \"xauth add $CURRENT_XAUTH\")" > /dev/null
    fi

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


-ntd