~/.bin/ff: Escape ampersands to make pango syntax work

I think that's what it was for...

.bin/ff

		;;
esac
file="$(find "$base" -type f -name "$pattern" -printf '%P\n' | $choose)"
file="$(find "$base" -type f -name "$pattern" -printf '%P\n' | sed 's/&/&/g' | $choose | sed 's/&/\&/g')"
if [ "$?" -eq "0" ]; then
	$program "$base/$file"
fi