Makefile: Fixed release machinery

[git-tools.git] / update2

diff --git a/update2 b/update2
index 1caa5ca056bc255874850362c5f0d0ff1dfbc856..55e8a8e1c682e8bdf9c8e5389021978e72947bfd 100755 (executable)
--- a/update2
+++ b/update2
@@ -49,17 +49,24 @@ if (@ARGV) {
        }
 }
 
-sub scan_branches($$) {
+sub get_source($$) {
        my ($ref, $new) = @_;
-       # Is there any branch pointing to $new (other than $ref)?
-       for (`git branch -v --no-abbrev`) {
+       # Get branch (different from $ref) whose tip is $new
+       my @branches = ();
+       for (`git for-each-ref refs/heads`) {
                chomp;
-               my ($name, $sha) = /^..(\S+)\s+(\S+)/ or die;
-               if ((!defined($ref) || $name ne $ref) && $sha eq $new) {
-                       return $name;
+               my ($sha, $type, $name) = m{^(\S+) (\S+)\trefs/heads/(\S+)$} or die;
+               if ((!defined($ref) || $name ne $ref) && $sha eq $new && $type eq 'commit') {
+                       push @branches, $name;
                }
        }
-       return;
+       if (@branches == 1) {
+               return $branches[0];
+       } elsif (@branches) {
+               return sprintf("%s [and %d other]", $branches[0], @branches-1);
+       } else {
+               return;
+       }
 }
 
 sub scan_commits($$) {
@@ -98,7 +105,7 @@ sub update_branch($$$$$)
        if ($old =~ /^0+$/) {
                # Creation of a branch
                $subj .= ' Created branch';
-               my $copy_of = scan_branches($branch, $new);
+               my $copy_of = get_source($branch, $new);
                if (defined $copy_of) {
                        $subj .= " as a copy of $copy_of";
                        print $out "Created branch $branch as a copy of $copy_of ($new).\n";
@@ -194,7 +201,7 @@ sub update_tag($$$$$)
                $subj .= " Deleted tag $tag";
                print $out "Deleted tag $tag ($old).\n";
        } else {
-               my $copy_of = scan_branches(undef, $new);
+               my $copy_of = get_source(undef, $new);
                my $cp = defined($copy_of) ? " to branch $copy_of" : "";
                if ($old =~ /^0+/) {
                        $subj .= " Created tag $tag$cp";
@@ -244,6 +251,7 @@ sub update_ref($$$)
                        '-x',
                        '-e', 'set charset="utf-8"',
                        '-e', 'set send_charset="us-ascii:iso-8859-2:utf-8"',
+                       '-e', 'set record=',
                        '-s', $headers->{'Subject'},
                );
                delete $headers->{'Subject'};