#!/bin/bash
#
# Syntax:  mdiff file1 [file2 ...] dir
#
# Purpose: Performs diff of file1, file2, ... against dir.
#          The -h flag shows the help info for this command.
#
# Note: You may have to include a line like
#       alias mdiff=~/your_bin_dir/mdiff
#       in your login files (e.g., .bashrc) in order to be able to use
#       this command.


# Created: May 15, 2007       by Bart De Schutter
# Last revised: Oct 21, 2008  by Bart De Schutter
#
# See http://www.deschutter.info/util/scripts.html for the latest version of
# this script.

# Status: public
# Category: files

#
# Process options.
#
if [  $# -ge 1   -a   "$1" = "-h"  ];
then
   sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
   exit 1
fi

if [ $# -lt 2 ];
then
   echo >&2
   echo >&2 "ERROR: ${0##*/} requires at least 2 input arguments."
   echo >&2
   sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
   exit 1
fi

if [ -n "$(type -p less)" ]
then
   less_command="\less -E -X -M -i -Q"
else
   less_command="\more"
fi

#
#  Perform diff.
#
declare -a list
list=("$@")
idx=$#
let idx-=1
dir=${list[$idx]}
(for fil in "${list[@]:0:$idx}"
do
   echo "diff $fil $dir"
   diff "$fil" "$dir"
done) | eval $less_command