[PATCH 10/27] import: (v2): write deletes to a separate '_' subdirectory

["Eric Wong (Contractor, The Linux Foundation)" <e@80x24.org>]

In the future, we may store "purged" content IDs or other
uncommon stuff under "_/" of the git tree.  This keeps the
top-level tree small and more amenable to deltafication.
This helps the the common case where "m" is most commonly
changed file at the top level.

Also, use 'D' instead of 'd' since it matches git's '--raw'
output format.
---
 lib/PublicInbox/Import.pm | 2 +-
 t/v2writable.t            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/PublicInbox/Import.pm b/lib/PublicInbox/Import.pm
index 94a49fe..6a640e2 100644
--- a/lib/PublicInbox/Import.pm
+++ b/lib/PublicInbox/Import.pm
@@ -208,7 +208,7 @@ sub remove {
 	if (defined $path) {
 		print $w "D $path\n\n" or wfail;
 	} else {
-		print $w "M 100644 :$blob d\n\n" or wfail;
+		print $w "M 100644 :$blob _/D\n\n" or wfail;
 	}
 	$self->{nchg}++;
 	(($self->{tip} = ":$commit"), $cur);
diff --git a/t/v2writable.t b/t/v2writable.t
index a5c982e..c6bcefd 100644
--- a/t/v2writable.t
+++ b/t/v2writable.t
@@ -210,7 +210,7 @@ EOF
 	is(scalar(@found), 0, 'no longer found in Xapian skeleton');
 
 	my $after = $git0->qx(qw(log -1 --pretty=raw --raw -r --no-abbrev));
-	if ($after =~ m!( [a-f0-9]+ )A\td$!) {
+	if ($after =~ m!( [a-f0-9]+ )A\t_/D$!) {
 		my $oid = $1;
 		ok(index($before, $oid) > 0, 'no new blob introduced');
 	} else {
-- 
EW