This fixes a few misc memory leaks reported by asan:
- Items of `config->config_chain` are now freed instead of just the list
itself
- `bar->swaybar_command` is now freed
- The result returned by a seat subcommand is now returned instead of
leaked
This allows for `-` (hyphen) to be used as an alias for the current seat
while sway is running. This alias was chosen since it is unlikely to
interfere with any desirable seat identifier
This changes the `pointer_constraint` command to be a subcommand of seat
to allow for per-seat settings. The current implementation that is not a
seat subcommand will only operate on the current seat and will segfault
in the config due to `config->handler_context.seat` only being set at
runtime.
This also allows for the wildcard identifier to be used to alter the
pointer constraint settings on all seats and allows for the setting to
be merged with the rest of the seat config.
Patch tested by compiling with `__attribute__ ((format (printf, 2, 3)))`
applied to `cmd_results_new`.
String usage constants have been converted from pointers to arrays when
encountered. General handler format strings were sometimes modified to
include the old input string, especially for unknown command errors.
Wait until all seat configs have been read before applying them on
reload. This prevents unnecessary attachment/detachment of input
devices and therefore creation/destruction of seat devices as
individual lines are read.
This makes seat configs work like output and input configs do. This also
adds support for wildcard seat configs. A seat config is still created
in the main seat command handler, but instead of creating a new one in
the subcommands and destroying the main seat command's instance, the
seat subcommands modify the main one. The seat config is then stored,
where it is merged appropriately. The seat config returned from
`store_seat_config` is then applied. When attempting to apply a wildcard
seat config, a seat specific config is queried for and if found, that is
used. Otherwise, the wildcard config is applied directly.
Additionally, instead of adding input devices to the default seat
directly when there is no seat configs, a seat config for the default
seat is created with only fallback set to true, which is more explicit.
It also fixes an issue where running a seat command at runtime (with no
seat config in the sway config), would result in all input devices being
removed from the default seat and leaving sway in an unusable state.
Also, instead of checking for any seat config, the search is for a seat
config with a fallback option seat. This makes it so if there are only
seat configs with fallback set to -1, the default seat is still created
since there is no explicit notion on what to do regarding fallbacks.
However, if there is even a single fallback 0, then the default seat is
not used as a fallback. This will be needed for seat subcommands like
hide_cursor where the user may only want to set that property without
effecting anything else.
