docs/diff-options: clarify scope of diff-filter types

diff --git a/line-range.c b/line-range.c
index de4e32f9424fbc0770756c3f61751fc69bfeb17e..323399d16cfa828adce913c9ff994e860ce2e7a5 100644 (file)
--- a/line-range.c
+++ b/line-range.c
@@ -269,8 +269,7 @@ int parse_range_arg(const char *arg, nth_line_fn_t nth_line_cb,
                return -1;
 
        if (*begin && *end && *end < *begin) {
-               long tmp;
-               tmp = *end; *end = *begin; *begin = tmp;
+               SWAP(*end, *begin);
        }
 
        return 0;