/usr/share/doc/claws-mail/tools/cm-reparent.pl is in claws-mail-tools 3.16.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | #!/usr/bin/perl
use 5.14.1;
use warnings;
our $VERSION = "1.02 - 2016-06-07";
sub usage {
my $err = shift and select STDERR;
say "usage: $0 file ...";
exit $err;
} # usage
use Date::Parse;
use Getopt::Long;
GetOptions (
"help|?" => sub { usage (0); },
"V|version" => sub { say $0 =~ s{.*/}{}r, " [$VERSION]"; exit 0; },
) or usage (1);
my $p;
my %f;
foreach my $fn (@ARGV) {
open my $fh, "<", $fn or die "$fn: $!\n";
my ($hdr, $body) = split m/(?<=\n)(?=\r?\n)/ => do { local $/; <$fh> }, 2;
close $fh;
$hdr or next;
my ($mid) = $hdr =~ m{^Message-Id: (.*)}mi;
my ($dte) = $hdr =~ m{^Date: (.*)}mi;
my ($irt) = $hdr =~ m{^In-Reply-To: (.*)}mi;
my ($ref) = $hdr =~ m{^References: (.*)}mi;
my $stamp = str2time ($dte) or next;
$f{$fn} = {
msg_id => $mid,
refs => $ref,
irt => $irt,
date => $dte,
stamp => $stamp,
hdr => $hdr,
body => $body,
};
$p //= $fn;
$stamp < $f{$p}{stamp} and $p = $fn;
}
# All but the oldest will refer to the oldest as parent
$p or exit 0;
my $pid = $f{$p}{msg_id};
foreach my $fn (sort keys %f) {
$fn eq $p and next;
my $c = 0;
my $f = $f{$fn};
if ($f->{refs}) {
unless ($f->{refs} eq $pid) {
$c++;
$f->{hdr} =~ s{^(?=References:)}{References: $pid\nX-}mi;
}
}
else {
$c++;
$f->{hdr} =~ s{^(?=Message-Id:)}{References: $pid\n}mi;
}
if ($f->{irt}) {
unless ($f->{irt} eq $pid) {
$c++;
$f->{hdr} =~ s{^(?=In-Reply-To:)}{In-Reply-To: $pid\nX-}mi;
}
}
else {
$c++;
$f->{hdr} =~ s{^(?=Message-Id:)}{In-Reply-To: $pid\n}mi;
}
$c or next; # No changes required
say "$f->{msg_id} => $pid";
open my $fh, ">", $fn or die "$fn: $!\n";
print $fh $f->{hdr}, $f->{body};
close $fh or die "$fn: $!\n";
}
__END__
=head1 NAME
cm-reparent.pl - fix mail threading
=head1 SYNOPSIS
cm-reparent.pl ~/Mail/inbox/23 ~/Mail/inbox/45 ...
=head1 DESCRIPTION
This script should be called from within Claws-Mail as an action
Define an action as
Menu name: Reparent (fix threading)
Command: cm-reparent.pl %F
Then select from the message list all files that should be re-parented
Then invoke the action
All but the oldest of those mails will be modified (if needed) to
reflect that the oldest mail is the parent of all other mails by
adding or altering the header lines C<In-Reply-To:> and C<References:>
Given 4 files A, B, C, and D like
File Message-Id Date
A 123AC_12 2016-06-01 12:13:14
B aFFde2993 2016-06-01 13:14:15
C 0000_1234 2016-06-02 10:18:04
D foo_bar_12 2016-06-03 04:00:00
The new tree will be like
A 123AC_12 2016-06-01 12:13:14
+- B aFFde2993 2016-06-01 13:14:15
+- C 0000_1234 2016-06-02 10:18:04
+- D foo_bar_12 2016-06-03 04:00:00
and not like
A 123AC_12 2016-06-01 12:13:14
+- B aFFde2993 2016-06-01 13:14:15
+- C 0000_1234 2016-06-02 10:18:04
+- D foo_bar_12 2016-06-03 04:00:00
Existing entries of C<References:> and C<In-Reply-To:> in the header
of any of B, C, or D will be preserved as C<X-References:> or
C<X-In-Reply-To:> respectively.
=head1 SEE ALSO
L<Date::Parse>, L<Claws Mail|http://www.claws-mail.org>
=head1 AUTHOR
H.Merijn Brand <h.m.brand@xs4all.nl>
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2016-2016 H.Merijn Brand. All rights reserved.
This library is free software; you can redistribute and/or modify it under
the same terms as Perl itself.
See the L<Artistic license|http://dev.perl.org/licenses/artistic.html>.
=cut
|