1 files changed, 5 insertions, 1 deletions
diff --git a/lib/PublicInbox/Search.pm b/lib/PublicInbox/Search.pm
index db86301d..6a05ce7a 100644
--- a/lib/PublicInbox/Search.pm
+++ b/lib/PublicInbox/Search.pm
@@ -10,6 +10,10 @@ require PublicInbox::View;
  use Email::MIME;
  use PublicInbox::MID qw/mid_clean mid_compressed/;
  
+# This is English-only, everything else is non-standard and may be confused as
+# a prefix common in patch emails
+our $REPLY_RE = qr/^re:\s+/i;
+
  use constant {
          TS => 0,
          # SCHEMA_VERSION history
@@ -490,7 +494,7 @@ sub subject_path {
  
          $subj =~ s/\A\s+//;
          $subj =~ s/\s+\z//;
-        $subj =~ s/^(?:re|aw):\s*//i; # remove reply prefix (aw: German)
+        $subj =~ s/$REPLY_RE//igo; # remove reply prefix
          $subj =~ s![^a-zA-Z0-9_\.~/\-]+!_!g;
          lc($subj);
  }