#!/bin/sh -
#
# xbm-pack [options] num_per_row files... output_file
#  
# Rejoin a image that was divided into an number of pieces back into
# a single image.
#

Usage() {
  echo >&2 "Usage: $0 num_per_row files... output_file"
  exit 10;
}

while :; do
  case "$1" in
    -*) echo >&2 "Unknown option \"$1\""; Usage ;;
    *)  break;;
  esac
done

case "$1" in
  *)             #  number of images per row
      if  size=`expr "$1" : '\([0-9]*\)'`;  then
        Row=$size
        shift
      else 
        Usage;
      fi ;;
esac

# all the above for just this!!!
montage +display -mode concatenate -tile ${Row}x999 -compose in  "$@"