From aed6363944c70f718835f908ce97ecd5b309e998 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 17 May 2015 14:14:32 +0100
Subject: Dgit.pm: Add debugging to git_for_each_...

---
 Debian/Dgit.pm | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index e8d2608..49cc073 100644
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -41,6 +41,11 @@ our $branchprefix = 'dgit';
 sub NOFFCHECK () { return 0x2; }
 sub FRESHREPO () { return 0x4; }
 
+sub printdebug;
+sub shellquote;
+sub printcmd;
+sub debugcmd;
+
 sub debiantag ($) { 
     my ($v) = @_;
     $v =~ y/~:/_%/;
@@ -62,9 +67,13 @@ sub git_for_each_ref ($$) {
     # calls $func->($objid,$objtype,$fullrefname,$reftail);
     # $reftail is RHS of ref after refs/\w+/
     # breaks if $pattern matches any ref `refs/blah' where blah has no `/'
-    open GFER, "-|", qw(git for-each-ref), $pattern or die $!;
+    my @cmd = (qw(git for-each-ref), $pattern);
+    open GFER, "-|", @cmd or die $!;
+    debugcmd "|", @cmd;
     while (<GFER>) {
-	m#^(\w+)\s+(\w+)\s+(refs/\w+/(\S+))\s# or die "$_ ?";
+	chomp or die "$_ ?";
+	printdebug "|> ", $_, "\n";
+	m#^(\w+)\s+(\w+)\s+(refs/\w+/(\S+))$# or die "$_ ?";
 	$func->($1,$2,$3,$4);
     }
     $!=0; $?=0; close GFER or die "$pattern $? $!";
@@ -73,6 +82,8 @@ sub git_for_each_ref ($$) {
 sub git_for_each_tag_referring ($$) {
     my ($objreferring, $func) = @_;
     # calls $func->($objid,$fullrefname,$tagname);
+    printdebug "git_for_each_tag_referring ",
+        ($objreferring // 'UNDEF'),"\n";
     git_for_each_ref('refs/tags', sub {
 	my ($objid,$objtype,$fullrefname,$tagname) = @_;
 	next unless $objtype eq 'tag';
-- 
cgit v1.2.3