Message-Id -> Lore with mutt display_filter

.mutt-message-id-to-lore.pl

!/usr/bin/perl
  
my @message;
my $isGit = 0;
while (<>) {
        push @message, "$_";
        $isGit |= m|git\@vger.kernel.org|;
}

if ($isGit) {
        foreach (@message) {
                s|(^Message-Id: <(.*)>)|\1\nhttps://lore.kernel.org/git/\2|i;
                # Mutt usually winds up wrapped at 100ch.
                s|(.*\n)(.{100,})|\1(lore URL too long to display)|i;
        }
}

print @message;

.muttrc

## (more muttrc here)

# Show the lines we care about in mails
ignore *
unignore From To Subject Cc Date Message-Id
hdr_order Date: From: To: Cc: Subject: Message-Id:

set display_filter="~/dotfiles/.mutt-message-id-to-lore.pl"