BASH Problems: Files with Spaces

for file in "$@" ; do
...
done

OLDIFS=$IFS
IFS=$'\n'
for file in $@ ; do
        # FIXME: I should have put these into a subroutine to reduce code duplications in explore().
        # However, I'm not familiar with subroutines in BASH yet.
        # echo "$file"
        IFS=$OLDIFS
        if [ -d "$file" ] ; then
                echo "Entering $file"
                pushd "$file" > /dev/null
                explore
                echo "Leaving $file"
                popd
        elif [ "`${FILE} \"${file}\" | ${GREP} text`" != "" ] ; then
                $DOS2UNIX "$file"
        fi
        IFS=$'\n'
done
IFS=$OLDIFS