To allow referencing built-in filters without hard coding a path during
installation, append the following folders to the exec PATH when running
the filter commands:
~/.config/aerc/filters
~/.local/share/aerc/filters
$PREFIX/share/aerc/filters
/usr/share/aerc/filters
If a filter script has the same name than a command in the default exec
PATH, it will not shadow it. In that edge case, the absolute path to the
filter script must be specified.
Suggested-by: Teo Luppi <me@luppi.uk>
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>