1 files changed, 12 insertions, 0 deletions
diff --git a/lib/PublicInbox/MboxReader.pm b/lib/PublicInbox/MboxReader.pm
index df7c78fa..f93c2ec6 100644
--- a/lib/PublicInbox/MboxReader.pm
+++ b/lib/PublicInbox/MboxReader.pm
@@ -11,6 +11,18 @@ $Data::Dumper::Useqq = 1; # should've been the default, for bad data
  my $from_strict =
          qr/^From \S+ +\S+ \S+ +\S+ [^\n:]+:[^\n:]+:[^\n:]+ [^\n:]+\n/sm;
  
+# cf: https://doc.dovecot.org/configuration_manual/mail_location/mbox/
+my %status2kw = (F => 'flagged', A => 'answered', R => 'seen', T => 'draft');
+# O (old/non-recent), and D (deleted) aren't in JMAP,
+# so probably won't be supported by us.
+sub mbox_keywords {
+        my $eml = $_[-1];
+        my $s = "@{[$eml->header_raw('X-Status'),$eml->header_raw('Status')]}";
+        my %kw;
+        $s =~ s/([FART])/$kw{$status2kw{$1}} = 1/sge;
+        [ sort(keys %kw) ];
+}
+
  sub _mbox_from {
          my ($mbfh, $from_re, $eml_cb, @arg) = @_;
          my $buf = '';