Fixup no-progress for fetch & clone

The intent of the commit 'fetch & clone: do not output progress when
not on a tty' was to make fetching and cloning less chatty when
output was not redirected (such as in a cron job).

However, there was a serious thinko in that commit. It assumed that
the client _and_ the server got this update at the same time. But
this is obviously not the case, and therefore upload-pack died on
seeing the option "--no-progress".

This patch fixes that issue by making it a protocol option. So, until
your server is updated, you still see the progress, but once the
server has this patch, it will be quiet.

A minor issue was also fixed: when cloning, the checkout did not
heed no_progress.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Documentation/git-upload-pack.txt

@@ -8,7 +8,7 @@ git-upload-pack - Send objects packed back to git-fetch-pack
 
 SYNOPSIS
 --------
-'git-upload-pack' [--strict] [--timeout=<n>] [--no-progress] <directory>
+'git-upload-pack' [--strict] [--timeout=<n>] <directory>
 
 DESCRIPTION
 -----------
@@ -30,9 +30,6 @@ OPTIONS
 \--timeout=<n>::
 	Interrupt transfer after <n> seconds of inactivity.
 
-\--no-progress::
-	Do not show the progress.
-
 <directory>::
 	The repository to sync from.
 

fetch-pack.c

@@ -174,12 +174,13 @@ static int find_common(int fd[2], unsigned char *result_sha1,
 		}
 
 		if (!fetching)
-			packet_write(fd[1], "want %s%s%s%s%s%s\n",
+			packet_write(fd[1], "want %s%s%s%s%s%s%s\n",
 				     sha1_to_hex(remote),
 				     (multi_ack ? " multi_ack" : ""),
 				     (use_sideband == 2 ? " side-band-64k" : ""),
 				     (use_sideband == 1 ? " side-band" : ""),
 				     (use_thin_pack ? " thin-pack" : ""),
+				     (no_progress ? " no-progress" : ""),
 				     " ofs-delta");
 		else
 			packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
@@ -732,11 +733,6 @@ int main(int argc, char **argv)
 	}
 	if (!dest)
 		usage(fetch_pack_usage);
-	if (no_progress) {
-		char buf[256];
-		snprintf(buf, sizeof(buf), "%s --no-progress", uploadpack);
-		pid = git_connect(fd, dest, buf);
-	} else
 	pid = git_connect(fd, dest, uploadpack);
 	if (pid < 0)
 		return 1;

git-clone.sh

@@ -395,7 +395,7 @@ then
 
 	case "$no_checkout" in
 	'')
-		test "z$quiet" = z && v=-v || v=
+		test "z$quiet" = z -a "z$no_progress" = z && v=-v || v=
 		git-read-tree -m -u $v HEAD HEAD
 	esac
 fi

upload-pack.c

@@ -10,7 +10,7 @@
 #include "revision.h"
 #include "list-objects.h"
 
-static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=nn] [--no-progress] <dir>";
+static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=nn] <dir>";
 
 /* bits #0..7 in revision.h, #8..10 in commit.c */
 #define THEY_HAVE	(1u << 11)
@@ -547,6 +547,8 @@ static void receive_needs(void)
 			use_sideband = LARGE_PACKET_MAX;
 		else if (strstr(line+45, "side-band"))
 			use_sideband = DEFAULT_PACKET_MAX;
+		if (strstr(line+45, "no-progress"))
+			no_progress = 1;
 
 		/* We have sent all our refs already, and the other end
 		 * should have chosen out of them; otherwise they are
@@ -615,7 +617,7 @@ static void receive_needs(void)
 static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 {
 	static const char *capabilities = "multi_ack thin-pack side-band"
-		" side-band-64k ofs-delta shallow";
+		" side-band-64k ofs-delta shallow no-progress";
 	struct object *o = parse_object(sha1);
 
 	if (!o)
@@ -670,10 +672,6 @@ int main(int argc, char **argv)
 			timeout = atoi(arg+10);
 			continue;
 		}
-		if (!strcmp(arg, "--no-progress")) {
-			no_progress = 1;
-			continue;
-		}
 		if (!strcmp(arg, "--")) {
 			i++;
 			break;