#!/bin/sh
set -eu

realpath() {
  perl -MFile::Spec -E 'my $base = shift; say File::Spec->abs2rel( shift, $base)' $1 $2
}

now_files=0
args=
files=
while [ -n "${1:-}" ]; do
  if [ "$1" = "--" ]; then
    now_files=1
  elif [ $now_files -eq 0 ]; then
    args="${args:+$args }$1"
  else
    if [ -e "${1##*/}" ]; then
      f="${1##*/}"
    else
      f="$(realpath $PWD $1)"
    fi
    files="${files:+$files }'$f'"
  fi
  shift
done

set -x
eval exec git annex metadata $args $files