index: warn with info about the message as context

This can help users track down the source of warnings
when presented with imperfect emails.

While we're at it, make the __WARN__ callback in t/v2writable.t
a no-op since we don't check for warnings, there.

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm
index 6829a343..87e8f3eb 100644
--- a/lib/PublicInbox/V2Writable.pm
+++ b/lib/PublicInbox/V2Writable.pm
@@ -72,6 +72,7 @@ sub new {
                 im => undef, #  PublicInbox::Import
                 parallel => 1,
                 transact_bytes => 0,
+                current_info => '',
                 xpfx => $xpfx,
                 over => PublicInbox::OverIdx->new("$xpfx/over.sqlite3", 1),
                 lock_path => "$dir/inbox.lock",
@@ -949,8 +950,10 @@ sub index_sync {
                 my $fh = $self->{reindex_pipe} = $git->popen(@cmd, $range);
                 my $cmt;
                 while (<$fh>) {
+                        chomp;
+                        $self->{current_info} = "$i.git $_";
                         if (/\A$x40$/o && !defined($cmt)) {
-                                chomp($cmt = $_);
+                                $cmt = $_;
                         } elsif (/\A:\d{6} 100644 $x40 ($x40) [AM]\tm$/o) {
                                 $self->reindex_oid($mm_tmp, $D, $git, $1,
                                                 $regen, $reindex);