Re: [PATCH] Make git-diff-tree indicate when it flushes

[Junio C Hamano <junkio@cox.net>]

Junio C Hamano <junkio@cox.net> writes:

> Paul Mackerras <paulus@samba.org> writes:
>
>> With --always, how do I tell that 65aadb affects apply.c and cc189c
>> doesn't?
>
> I am not quite sure exactly what you are trying to achieve, but
> one trivial way is not giving -s perhaps?

Having said that, I suspect this might be a better way.
Whatever you throw at it from stdin that are not a validly
looking object name, you will get them back, so you can use your
favorite markers.

diff --git a/builtin-diff-tree.c b/builtin-diff-tree.c
index cc53b81..7208c48 100644
--- a/builtin-diff-tree.c
+++ b/builtin-diff-tree.c
@@ -138,11 +138,15 @@ int cmd_diff_tree(int argc, const char *
 	if (opt->diffopt.detect_rename)
 		opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
 				       DIFF_SETUP_USE_CACHE);
-	while (fgets(line, sizeof(line), stdin))
-		if (line[0] == '\n')
+	while (fgets(line, sizeof(line), stdin)) {
+		unsigned char sha1[20];
+
+		if (get_sha1_hex(line, sha1)) {
+			fputs(line);
 			fflush(stdout);
+		}
 		else
 			diff_tree_stdin(line);
-
+	}
 	return 0;
 }