#!/bin/bash

# This script is basically shorthand for
#   git diff --no-index $FILE1 $FILE2
# except that it works correctly when $FILE1 and $FILE2 involve process
# substitution, i.e when it looks like
#   mydiff <(somecmd | grep foobar) <(anothercmd)

if [ $# -lt 2 ]; then
  echo "Usage: $0 [options] <file1> <file2>" 1>&2
  exit 1
fi

num=$(($#-2))
args=${@:1:$num}
shift $num
tmp1=$1
if [ -h $1 ]; then
  tmp1=$(mktemp)
  cat $1 >$tmp1
fi
tmp2=$2
if [ -h $2 ]; then
  tmp2=$(mktemp)
  cat $2 >$tmp2
fi
git diff --no-index ${args} $tmp1 $tmp2

test -h "$1" && rm $tmp1
test -h "$2" && rm $tmp2