X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=git-debrebase;h=fe11251a9a7d95022af614537c5a3cd09d42c182;hp=111bb1f7b8dd0c1ae768d5eb0bfc8c9e56914191;hb=11c8c965c3419fddf2444a7497b45b65f05d3db5;hpb=fb99aded391ed1fc792bf3eea3dcae2694060ea5

diff --git a/git-debrebase b/git-debrebase
index 111bb1f7..fe11251a 100755
--- a/git-debrebase
+++ b/git-debrebase
@@ -19,6 +19,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 END { $? = $Debian::Dgit::ExitStatus::desired // -1; };
+use Debian::Dgit::GDR;
 use Debian::Dgit::ExitStatus;
 
 use strict;
@@ -33,6 +34,7 @@ use Data::Dumper;
 use Getopt::Long qw(:config posix_default gnu_compat bundling);
 use Dpkg::Version;
 use File::FnMatch qw(:fnmatch);
+use File::Copy;
 
 our ($opt_force, $opt_noop_ok, @opt_anchors);
 our ($opt_defaultcmd_interactive);
@@ -116,7 +118,7 @@ sub run_deferred_updates ($) {
 
     confess 'dangerous internal error' unless all_snags_summarised();
 
-    my @upd_cmd = (@git, qw(update-ref --stdin -m), "debrebase: $mrest");
+    my @upd_cmd = (git_update_ref_cmd "debrebase: $mrest", qw(--stdin));
     debugcmd '>|', @upd_cmd;
     open U, "|-", @upd_cmd or die $!;
     foreach (@deferred_updates) {
@@ -973,19 +975,8 @@ sub cmd_analyse () {
 }
 
 sub ffq_prev_branchinfo () {
-    # => ('status', "message", [$current, $ffq_prev, $gdrlast])
-    # 'status' may be
-    #    branch         message is undef
-    #    weird-symref   } no $current,
-    #    notbranch      }  no $ffq_prev
     my $current = git_get_symref();
-    return ('detached', 'detached HEAD') unless defined $current;
-    return ('weird-symref', 'HEAD symref is not to refs/')
-	unless $current =~ m{^refs/};
-    my $ffq_prev = "refs/$ffq_refprefix/$'";
-    my $gdrlast = "refs/$gdrlast_refprefix/$'";
-    printdebug "ffq_prev_branchinfo branch current $current\n";
-    return ('branch', undef, $current, $ffq_prev, $gdrlast);
+    return gdr_ffq_prev_branchinfo($current);
 }
 
 sub record_ffq_prev_deferred () {
@@ -1029,7 +1020,7 @@ sub record_ffq_prev_deferred () {
 	}
 	return if $invert;
 	my $lrval = git_get_ref $lrref;
-	return unless defined $lrval;
+	return unless length $lrval;
 
 	if (is_fast_fwd $lrval, $currentval) {
 	    print "OK, you are ahead of $lrref\n" or die $!;
@@ -1139,7 +1130,7 @@ sub do_stitch ($;$) {
     stitch($dangling_head, $ffq_prev, $gdrlast, $ffq_prev_commitish, $prose);
 }
 
-sub cmd_new_upstream_v0 () {
+sub cmd_new_upstream () {
     # automatically and unconditionally launders before rebasing
     # if rebase --abort is used, laundering has still been done
 
@@ -1151,7 +1142,23 @@ sub cmd_new_upstream_v0 () {
     my $new_version = (new Dpkg::Version scalar(shift @ARGV), check => 1);
     my $new_upstream_version = $new_version->version();
 
-    my $new_upstream = git_rev_parse (shift @ARGV // 'upstream');
+    my $new_upstream = shift @ARGV;
+    if (!defined $new_upstream) {
+	my @tried;
+	# todo: at some point maybe use git-deborig to do this
+	foreach my $tagpfx ('', 'v', 'upstream/') {
+	    my $tag = $tagpfx.(dep14_version_mangle $new_upstream_version);
+	    $new_upstream = git_get_ref "refs/tags/$tag";
+	    last if length $new_upstream;
+	    push @tried, $tag;
+	}
+	if (!length $new_upstream) {
+	    fail "Could not determine appropriate upstream commitish.\n".
+		" (Tried these tags: @tried)\n".
+		" Check version, and specify upstream commitish explicitly.";
+	}
+    }
+    $new_upstream = git_rev_parse $new_upstream;
 
     record_ffq_auto();
 
@@ -1210,11 +1217,13 @@ sub cmd_new_upstream_v0 () {
 	   ) {
 	    my @oldpieces = (split / /, $1);
 	    my $old_n_parents = scalar @{ $old_upstream->{Parents} };
-	    if (@oldpieces != $old_n_parents) {
+	    if ($old_n_parents != @oldpieces &&
+		$old_n_parents != @oldpieces + 1) {
 		snag 'upstream-confusing', sprintf
 		    "previous upstream combine %s".
-		    " mentions %d pieces (each implying one orig commit)".
-		    " but has %d parents",
+		    " mentions %d pieces (each implying one parent)".
+		    " but has %d parents".
+		    " (one per piece plus maybe a previous combine)",
 		    $old_upstream->{CommitId},
 		    (scalar @oldpieces),
 		    $old_n_parents;
@@ -1227,7 +1236,8 @@ sub cmd_new_upstream_v0 () {
 		$oldpieces[0] = '';
 		foreach my $i (0..$#oldpieces) {
 		    my $n = $oldpieces[$i];
-		    $piece->($n, Old => $old_upstream->{CommitId}.'^'.($i+1));
+		    my $hat = 1 + $i + ($old_n_parents - @oldpieces);
+		    $piece->($n, Old => $old_upstream->{CommitId}.'^'.$hat);
 		}
 	    }
 	} else {
@@ -1372,6 +1382,10 @@ sub cmd_breakwater () {
 sub cmd_status () {
     badusage "no arguments allowed" if @ARGV;
 
+    # todo: gdr status should print divergence info
+    # todo: gdr status should print upstream component(s) info
+    # todo: gdr should leave/maintain some refs with this kind of info ?
+
     my $oldest = [ 0 ];
     my $newest;
     my $note = sub {
@@ -1482,7 +1496,12 @@ sub make_patches_staged ($) {
     in_workarea sub {
 	runcmd @git, qw(checkout -q -b bw), $secret_bw;
 	runcmd @git, qw(checkout -q -b patch-queue/bw), $secret_head;
-	runcmd qw(gbp pq export);
+	my @gbp_cmd = (qw(gbp pq export));
+	my $r = system shell_cmd 'exec >../gbp-pq-err 2>&1', @gbp_cmd;
+	if ($r) {
+	    { local ($!,$?); copy('../gbp-pq-err', \*STDERR); }
+	    failedcmd @gbp_cmd;
+	}
 	runcmd @git, qw(add debian/patches);
     };
 }
@@ -1505,6 +1524,9 @@ sub make_patches ($) {
 }
 
 sub cmd_make_patches () {
+    my $opt_quiet_would_amend;
+    GetOptions('quiet-would-amend!', \$opt_quiet_would_amend)
+	or die badusage("bad options to make-patches");
     badusage "no arguments allowed" if @ARGV;
     my $old_head = get_head();
     my $new = make_patches $old_head;
@@ -1519,7 +1541,8 @@ sub cmd_make_patches () {
 	print STDERR failmsg
 	    "Patch export produced patch amendments".
 	    " (abandoned output commit $new).".
-	    "  Try laundering first.";
+	    "  Try laundering first."
+	    unless $opt_quiet_would_amend;
 	finish 7;
     }
 }