I tried to use 'systemctl --all list-units' to filter unit files, but
this always filters out unit files which are not loaded. We want to complete
systemctl start with those units too, so this approach is not going to work.
New version is rather slow, but hopefully correct.
Templates can be [re]enabled, on their own if the have DefaultInstance set,
and with an instance suffix in all cases. Propose just the template name
ending in @, to underline the instance suffix may have to be appended.
Likewise for start/restart.
This means that sometimes superflous units that one will not really
want to operate on will be proposed, but this seems better than
proposing a very incomplete set of names.
https://bugs.freedesktop.org/show_bug.cgi?id=66912
Since c6a373a263, we might encounter unit templates via the
'list-units' verb. These aren't restartable (and we throw errors), so
make sure they're filtered out of the completion options.
fixes downstream bug: https://bugs.archlinux.org/task/41719
This fixes the issue noted by Zbigniew in most cases.
if a unit's name is enclosed in single quotes completion still
will not happen after the first `\'.
https://bugs.freedesktop.org/show_bug.cgi?id=78388
I think that it is better to return good results slightly more slowly,
than partial quickly. Also reading from disk seems fast enough. Even
the delay on first try with completely cold cache is acceptable.
This is just for bash, 'cause zsh was already doing this.
https://bugzilla.redhat.com/show_bug.cgi?id=790768
