* emacsclient-mail.desktop and --display
@ 2024-05-17 4:24 Max Nikulin
0 siblings, 0 replies; only message in thread
From: Max Nikulin @ 2024-05-17 4:24 UTC (permalink / raw)
To: emacs-devel; +Cc: Spencer Baugh
Hi,
I am confused by the commit
683efb8de5a 2023-09-21 21:35:50 -0400 Spencer Baugh: Add
'server-eval-args-left' to server.el
It dropped --display="$DISPLAY" argument from emacsclient-mail.desktop,
but not from emacsclient.desktop.
I am running emacs-28 from Debian stable, so it might be a false alarm
since I have not tried the development version in action.
My point is that semantics of emacsclient --display=ARG is quite
different from standard X11 -display option. See lib-src/emacsclient.c
> inconvenient. So we force users to use "--display $DISPLAY" if
> they want Emacs to connect to their current display.
Earlier I faced a not so obvious issue with a custom desktop file for
org-protocol. I could not figure out why some function like getting X
selection did not work. If emacs is started as a daemon then it does not
open a connection to X server on startup or in response to emacsclient
command without explicit --display="$DISPLAY".
I am less sure concerning WAYLAND_DISPLAY, but looking into the code I
expect that it is applied by default (unlike DISPLAY).
Shouldn't --display="$DISPLAY" be added back to emacsclient-mail.desktop
(with a comment why it is there)? If I missed some changes and this
option is now optional then it should be dropped from
emacsclient.desktop as well? Should it be something like
--display="${WAYLAND_DISPLAY:-${DISPLAY}}" in both cases to prefer
wayland if it is available?
P.S. A lot of thanks to Spencer Baugh for `server-eval-args-left'. It is
a great step toward convenient and secure way to invoke emacsclient with
arbitrary arguments (though it is a bit less ergonomic than --apply).
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