if test "x$1" = x/dev/null; then
test -s "$2" || return 0
- { emit_diff_u_header_ "$@"; sed 's/^/+/' -- "$2"; } >&2
+ emit_diff_u_header_ "$@"; sed 's/^/+/' -- "$2"
return 1
fi
if test "x$2" = x/dev/null; then
test -s "$1" || return 0
- { emit_diff_u_header_ "$@"; sed 's/^/-/' -- "$1"; } >&2
+ emit_diff_u_header_ "$@"; sed 's/^/-/' -- "$1"
return 1
fi