X-Git-Url: http://www.git.stargrave.org/?p=public-inbox.git;a=blobdiff_plain;f=lib%2FPublicInbox%2FContentHash.pm;h=f6ae9011c1bf2d471e239550fd7347c85adbeb3f;hp=cc4a54c922d09c9788cfb63b03097631ecc7bcb0;hb=64f6a4c97b05a709de60aea9c3a5f51d7a37f226;hpb=3e096b699243ea7bd9d12fec8f3048104e462802

diff --git a/lib/PublicInbox/ContentHash.pm b/lib/PublicInbox/ContentHash.pm
index cc4a54c9..f6ae9011 100644
--- a/lib/PublicInbox/ContentHash.pm
+++ b/lib/PublicInbox/ContentHash.pm
@@ -52,9 +52,9 @@ sub content_dig_i {
 	$dig->add($s);
 }
 
-sub content_digest ($) {
-	my ($eml) = @_;
-	my $dig = Digest::SHA->new(256);
+sub content_digest ($;$) {
+	my ($eml, $dig) = @_;
+	$dig //= Digest::SHA->new(256);
 
 	# References: and In-Reply-To: get used interchangeably
 	# in some "duplicates" in LKML.  We treat them the same