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Re: PATCH: update ansible completion to 2.9
Oliver Kiddle wrote on Wed, 08 Jul 2020 13:31 +0200:
> For 2.9.10 to be precise but I don't think much changes in the minor
> patch releases.
> Most of the changes appear to be with ansible-galaxy and ansible-vault,
> neither of which I use so much. Completing tags is new. Unfortunately
> the playbook tends to come last on the command-line after you've
> specified the tags so it isn't really possible to get the exact playbook
> and parse it for includes and roles. But completion for tags is too
> useful to leave out completely.
>
> Oliver
>
> +++ b/Completion/Unix/Command/_ansible
> @@ -232,27 +231,68 @@ case $state in
> + tags)
> + # The recursive glob here is questionable and perhaps there should be a style.
> + _sequence _wanted tags expl tag compadd - \
> + ${(s.,.)${(j.,.)${(M)${(f)"$(cat **/*.yml)"}:# #tags:*}#*: }} && ret=0
> + ;;
Review of this block:
1. Missing end-of-options guard
2. Agree that recursive glob is questionable. It's effectively
unbounded work, to say nothing of NFS mounts, /zfs/.snapshot/ dirs, and
the like. I'm not sure that should be the default behaviour. One
alternative suggestion is a zstyle whose value is a list of files to
grep. Another POV: if the yml files are in version control, then the
VCS could be queried (e.g., `git ls-tree -r ./`). That might be useful
in other completions too.
3. Add the (N) glob qualifier?
4. As written, this slurps "$(cat **/*.yml)" into a giant string
literal, then splits it into an array in memory, etc.. I suspect it
would be a lot faster to just use grep(1) or sed(1), since we're
forking anyway.
Haven't had time to review blocks other than this one, sorry. (Might
do so later if I have time, but don't wait for me.)
Cheers,
Daniel
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