#!/bin/sh

if [ $# -eq 1 ]; then
	TARGETDIR="$1"
elif [ $# -eq 0 ]; then
	TARGETDIR=scripts
else
	exit 2
fi

BACKUPSUFFIX=.orig

[ -d "$TARGETDIR" ] || exit 1
rm -rf "$TARGETDIR$BACKUPSUFFIX"
cp -a "$TARGETDIR" "$TARGETDIR$BACKUPSUFFIX"
grep -lr '\\t' "$TARGETDIR" |
while read filename; do
	sed -i '/print_message/s/\\t/${TAB}/g' "$filename"
done

diff -ur "$TARGETDIR$BACKUPSUFFIX" "$TARGETDIR"