Hi Thomas, For the last couple years we've been using mb2q tool to normalize patches and it worked wonderfully. Recently we've hit few bugs: curl -s https://patchwork.kernel.org/patch/11807443/mbox/ > /tmp/mbox.i; ~/bin/mb2q --mboxout mbox.o /tmp/mbox.i Drop Message w/o Message-ID: No subject No patches found in mbox I've tried to debug it, but couldn't figure out what's going on. The subject and message-id fields are parsed correctly, but later something happens. Could you please take a look? Another issue we've hit was that some mailers split message-id into few lines like this: curl -s https://patchwork.kernel.org/patch/11809399/mbox/|grep -2 Message-Id: Subject: [PATCH bpf-next v4 1/6] bpf: add classid helper only based on skb->sk Date: Wed, 30 Sep 2020 17:18:15 +0200 Message-Id: <ed633cf27a1c620e901c5aa99ebdefb028dce600.1601477936.git.daniel@xxxxxxxxxxxxx> X-Mailer: git-send-email 2.21.0 That was an easy fix: - mid = pmsg.msgid.lstrip('<').rstrip('>') + mid = pmsg.msgid.lstrip('\n').lstrip(' ').lstrip('<').rstrip('>') The tglx/quilttools.git doesn't have this fix, so I'm guessing you haven't seen it yet. Thanks!