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authorEric Wong <e@yhbt.net>2020-07-07 20:37:35 +0000
committerEric Wong <e@yhbt.net>2020-07-10 11:27:06 +0000
commit7f454bace0442cd5ce22068ec1e098e964d82778 (patch)
tree1a3ba0012aa75a3a8a427a275c2b46ffce60813b /lib/PublicInbox/MboxGz.pm
parentbc18c05b1681acc9a468b298c34b12ca4db3e5bb (diff)
downloadpublic-inbox-7f454bace0442cd5ce22068ec1e098e964d82778.tar.gz
Returning an empty string for a filename makes no sense,
so instead return `undef' so the caller can setup a fallback
using the "//" operator.

This fixes uninitialized variable warnings because split()
on an empty string returns `undef', which caused to_filename
to warn on s// and tr// ops.
Diffstat (limited to 'lib/PublicInbox/MboxGz.pm')
-rw-r--r--lib/PublicInbox/MboxGz.pm3
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/PublicInbox/MboxGz.pm b/lib/PublicInbox/MboxGz.pm
index fdd16f68..967af9c6 100644
--- a/lib/PublicInbox/MboxGz.pm
+++ b/lib/PublicInbox/MboxGz.pm
@@ -24,8 +24,7 @@ sub mbox_gz {
         $self->{cb} = $cb;
         $self->{base_url} = $self->{-inbox}->base_url($self->{env});
         $self->{gz} = PublicInbox::GzipFilter::gzip_or_die();
-        $fn = to_filename($fn // 'no-subject');
-        $fn = 'no-subject' if $fn eq '';
+        $fn = to_filename($fn // '') // 'no-subject';
         # http://www.iana.org/assignments/media-types/application/gzip
         bless $self, __PACKAGE__;
         my $res_hdr = [ 'Content-Type' => 'application/gzip',