X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=git-fmt-merge-msg.perl;h=3de67d779044ca0a9a511eded6929b3c33ddcd1f;hb=ee072260dbff6914c24d956bcc2d46882831f1a0;hp=f0f3100eb1c089efd990b71bb747f4dd0cd035f9;hpb=7fe2fc79358673a909d71e62d3f80ffe0f525fce;p=git.git

diff --git a/git-fmt-merge-msg.perl b/git-fmt-merge-msg.perl
index f0f3100e..3de67d77 100755
--- a/git-fmt-merge-msg.perl
+++ b/git-fmt-merge-msg.perl
@@ -27,10 +27,55 @@ sub andjoin {
 	return ($m);
 }
 
+sub repoconfig {
+	my $fh;
+	my $val;
+	eval {
+		open $fh, '-|', 'git-repo-config', '--get', 'merge.summary'
+		    or die "$!";
+		($val) = <$fh>;
+		close $fh;
+	};
+	return $val;
+}
+
+sub current_branch {
+	my $fh;
+	open $fh, '-|', 'git-symbolic-ref', 'HEAD' or die "$!";
+	my ($bra) = <$fh>;
+	chomp($bra);
+	$bra =~ s|^refs/heads/||;
+	if ($bra ne 'master') {
+		$bra = " into $bra";
+	} else {
+		$bra = "";
+	}
+
+	return $bra;
+}
+
+sub shortlog {
+	my ($tip) = @_;
+	my ($fh, @result);
+	open $fh, '-|', ('git-log', '--topo-order',
+			 '--pretty=oneline', $tip, '^HEAD')
+	    or die "$!";
+	while (<$fh>) {
+		s/^[0-9a-f]{40}\s+//;
+		push @result, $_;
+	}
+	close $fh or die "$!";
+	return @result;
+}
+
+my @origin = ();
 while (<>) {
-	my ($bname, $tname, $gname, $src);
+	my ($bname, $tname, $gname, $src, $sha1, $origin);
 	chomp;
-	s/^[0-9a-f]*	//;
+	s/^([0-9a-f]*)	//;
+	$sha1 = $1;
+	next if (/^not-for-merge/);
+	s/^	//;
 	if (s/ of (.*)$//) {
 		$src = $1;
 	} else {
@@ -50,19 +95,30 @@ while (<>) {
 		};
 	}
 	if (/^branch (.*)$/) {
+		$origin = $1;
 		push @{$src{$src}{BRANCH}}, $1;
 		$src{$src}{HEAD_STATUS} |= 2;
 	}
 	elsif (/^tag (.*)$/) {
+		$origin = $_;
 		push @{$src{$src}{TAG}}, $1;
 		$src{$src}{HEAD_STATUS} |= 2;
 	}
 	elsif (/^HEAD$/) {
+		$origin = $src;
 		$src{$src}{HEAD_STATUS} |= 1;
 	}
 	else {
 		push @{$src{$src}{GENERIC}}, $_;
 		$src{$src}{HEAD_STATUS} |= 2;
+		$origin = $src;
+	}
+	if ($src eq '.' || $src eq $origin) {
+		$origin =~ s/^'(.*)'$/$1/;
+		push @origin, [$sha1, "$origin"];
+	}
+	else {
+		push @origin, [$sha1, "$origin of $src"];
 	}
 }
 
@@ -86,8 +142,37 @@ for my $src (@src) {
 			    $src{$src}{GENERIC});
 	my $this = join(', ', @this);
 	if ($src ne '.') {
-		$this .= " from $src";
+		$this .= " of $src";
 	}
 	push @msg, $this;
 }
-print "Merge ", join("; ", @msg), "\n";
+
+my $into = current_branch();
+
+print "Merge ", join("; ", @msg), $into, "\n";
+
+if (!repoconfig) {
+	exit(0);
+}
+
+# We limit the merge message to the latst 20 or so per each branch.
+my $limit = 20;
+
+for (@origin) {
+	my ($sha1, $name) = @$_;
+	my @log = shortlog($sha1);
+	if ($limit + 1 <= @log) {
+		print "\n* $name: (" . scalar(@log) . " commits)\n";
+	}
+	else {
+		print "\n* $name:\n";
+	}
+	my $cnt = 0;
+	for my $log (@log) {
+		if ($limit < ++$cnt) {
+			print "  ...\n";
+			last;
+		}
+		print "  $log";
+	}
+}