pyenv/libexec/rbenv-completions

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#!/usr/bin/env bash
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# Usage: rbenv completions <command> [arg1 arg2...]
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set -e
[ -n "$RBENV_DEBUG" ] && set -x
COMMAND="$1"
if [ -z "$COMMAND" ]; then
rbenv-help --usage completions >&2
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exit 1
fi
COMMAND_PATH="$(command -v "rbenv-$COMMAND" || command -v "rbenv-sh-$COMMAND")"
# --help is provided automatically
echo --help
if grep -iE "^([#%]|--|//) provide rbenv completions" "$COMMAND_PATH" >/dev/null; then
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shift
exec "$COMMAND_PATH" --complete "$@"
fi