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#!/usr/bin/env zsh
##
# Compares options in `rg --help` output to options in zsh completion function
emulate -R zsh
setopt extended_glob
setopt no_function_argzero
setopt no_unset
get_comp_args() {
setopt local_options unset
# Our completion function recognises a special variable which tells it to
# dump the _arguments specs and then just return. But do this in a sub-shell
# anyway to avoid any weirdness
( _RG_COMPLETE_LIST_ARGS=1 source $1 )
return $?
}
main() {
local diff
local rg="${${0:a}:h}/../target/${TARGET:-}/release/rg"
local _rg="${${0:a}:h}/../complete/_rg"
local -a help_args comp_args
[[ -e $rg ]] || rg=${rg/%\/release\/rg/\/debug\/rg}
[[ -e $rg ]] || {
printf >&2 'File not found: %s\n' $rg
return 1
}
[[ -e $_rg ]] || {
printf >&2 'File not found: %s\n' $_rg
return 1
}
printf 'Comparing options:\n-%s\n+%s\n' $rg $_rg
# 'Parse' options out of the `--help` output. To prevent false positives we
# only look at lines where the first non-white-space character is `-`
help_args=( ${(f)"$(
$rg --help |
$rg -- '^\s*-' |
$rg -io -- '[\t ,](-[a-z0-9]|--[a-z0-9-]+)\b' |
tr -d '\t ,' |
sort -u
)"} )
# 'Parse' options out of the completion function
comp_args=( ${(f)"$( get_comp_args $_rg )"} )
comp_args=( ${comp_args#\(*\)} ) # Strip excluded options
comp_args=( ${comp_args#\*} ) # Strip repetition indicator
comp_args=( ${comp_args%%-[:[]*} ) # Strip everything after -optname-
comp_args=( ${comp_args%%[:+=[]*} ) # Strip everything after other optspecs
comp_args=( ${comp_args##[^-]*} ) # Remove non-options
# This probably isn't necessary, but we should ensure the same order
comp_args=( ${(f)"$( printf '%s\n' $comp_args | sort -u )"} )
(( $#help_args )) || {
printf >&2 'Failed to get help_args\n'
return 1
}
(( $#comp_args )) || {
printf >&2 'Failed to get comp_args\n'
return 1
}
diff="$(
if diff --help 2>&1 | grep -qF -- '--label'; then
diff -U2 \
--label '`rg --help`' \
--label '`_rg`' \
=( printf '%s\n' $help_args ) =( printf '%s\n' $comp_args )
else
diff -U2 \
-L '`rg --help`' \
-L '`_rg`' \
=( printf '%s\n' $help_args ) =( printf '%s\n' $comp_args )
fi
)"
(( $#diff )) && {
printf >&2 '%s\n' 'zsh completion options differ from `--help` options:'
printf >&2 '%s\n' $diff
return 1
}
printf 'OK\n'
return 0
}
main "${@}"
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