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-rw-r--r--lib/PublicInbox/Filter.pm4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/PublicInbox/Filter.pm b/lib/PublicInbox/Filter.pm
index 49ba5cb2..bcc57c45 100644
--- a/lib/PublicInbox/Filter.pm
+++ b/lib/PublicInbox/Filter.pm
@@ -144,7 +144,7 @@ sub strip_multipart {
 
                         push @keep, $part;
                 } elsif ($part_type eq '' ||
-                         $part_type =~ m!\Aapplication/octet-stream\z!i) {
+                         $part_type =~ m!\bapplication/octet-stream\b!i) {
                         # unfortunately, some mailers don't set correct types,
                         # let messages of unknown type through but do not
                         # change the sender-specified type
@@ -153,7 +153,7 @@ sub strip_multipart {
                         } else {
                                 $rejected++;
                         }
-                } elsif ($part_type =~ m!\Aapplication/pgp-signature\z!i) {
+                } elsif ($part_type =~ m!\bapplication/pgp-signature\b!i) {
                         # PGP signatures are not huge, we may keep them.
                         # They can only be valid if it's the last element,
                         # so we keep them iff the message is unmodified: