dbus-update-activation-environment and systemctl --user import-environment
were fired asynchronously via spawn_async_no_shell, racing with the autostart
script. Any systemd user service started from autostart (e.g. via
labwc-session.target) could start before the import completed, leaving
WAYLAND_DISPLAY and related variables absent from its environment and those
of any apps it launches.
Run both commands synchronously via a new spawn_sync_no_shell helper so
the import is guaranteed to complete before the autostart script executes.
...to start <command> on startup and to terminate the compositor when
<command> exits.
This is useful for session management as it allows the session client (for
example `lxqt-session`) to terminate labwc - be exiting itself.
Under X, xinit starts the server and keeps it alive for as long as
lxqt-session runs. Thus either the session client starts the Window
Manager, or the Window Manager can be launched independently first. On
Wayland, the Compositor is both Display Server and Window Manager, so the
described session management mechanisms do not work because the Compositor
needs to be running before the session can function.
As some session clients support both X11 and Wayland, this command line
option avoids re-writes and fragmentation.
Co-authored-by: @Consolatis
Made all header files to have LABWC_ prefix in include guard identifers.
Converted from __LABWC_ in 35 include/ files.
Converted from __LAB_ in 5 include/ files.
Added LABWC prefix to 3 include/ files.
Added include guards to 3 include/ files.
The double underscores were removed since according to C standard
those "are always reserved for any use".
