1 # Copyright (C) 2017-2021 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # Filter for various [tags] in subjects
5 package PublicInbox::Filter::SubjectTag;
8 use base qw(PublicInbox::Filter::Base);
11 my ($class, %opts) = @_;
12 my $tag = delete $opts{-tag};
13 die "tag not defined!\n" unless defined $tag && $tag ne '';
14 my $self = $class->SUPER::new(%opts);
15 $self->{tag_re} = qr/\A\s*(re:\s+|)\Q$tag\E\s*/i;
20 my ($self, $mime) = @_;
21 my $subj = $mime->header('Subject');
23 $subj =~ s/$self->{tag_re}/$1/; # $1 is "Re: "
24 $mime->header_str_set('Subject', $subj);
29 # no suffix/article rejection for mirrors
31 my ($self, $mime) = @_;