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# Invoke (pyinvoke.org) tab-completion script to be sourced with the Z shell.
# Known to work on zsh 5.0.x, probably works on later 4.x releases as well (as
# it uses the older compctl completion system).
_complete_invoke() {
# `words` contains the entire command string up til now (including
# program name).
#
# We hand it to Invoke so it can figure out the current context: spit back
# core options, task names, the current task's options, or some combo.
#
# Before doing so, we attempt to tease out any collection flag+arg so we
# can ensure it is applied correctly.
collection_arg=''
if [[ "${words}" =~ "(-c|--collection) [^ ]+" ]]; then
collection_arg=$MATCH
fi
# `reply` is the array of valid completions handed back to `compctl`.
# Use ${=...} to force whitespace splitting in expansion of $collection_arg
reply=( $(invoke ${=collection_arg} --complete -- ${words}) )
}
# Tell shell builtin to use the above for completing 'inv'/'invoke':
# * -K: use given function name to generate completions.
# * +: specifies 'alternative' completion, where options after the '+' are only
# used if the completion from the options before the '+' result in no matches.
# * -f: when function generates no results, use filenames.
# * positional args: program names to complete for.
compctl -K _complete_invoke + -f inv invoke
# vim: set ft=sh :
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