1 files changed, 11 insertions, 4 deletions
diff --git a/lib/PublicInbox/Search.pm b/lib/PublicInbox/Search.pm
index b9f283fb..c28401bc 100644
--- a/lib/PublicInbox/Search.pm
+++ b/lib/PublicInbox/Search.pm
@@ -492,14 +492,21 @@ sub merge_threads {
  # normalize subjects so they are suitable as pathnames for URLs
  sub subject_path {
          my $subj = pop;
-
-        $subj =~ s/\A\s+//;
-        $subj =~ s/\s+\z//;
-        $subj =~ s/$REPLY_RE//igo; # remove reply prefix
+        $subj = subject_normalized($subj);
          $subj =~ s![^a-zA-Z0-9_\.~/\-]+!_!g;
          lc($subj);
  }
  
+sub subject_normalized {
+        my $subj = pop;
+        $subj =~ s/\A\s+//s; # no leading space
+        $subj =~ s/\s+\z//s; # no trailing space
+        $subj =~ s/\s+/ /gs; # no redundant spaces
+        $subj =~ s/\.+\z//; # no trailing '.'
+        $subj =~ s/$REPLY_RE//igo; # remove reply prefix
+        $subj;
+}
+
  sub do_cat_mail {
          my ($git, $blob) = @_;
          my $mime = eval {