patchbomb: add option to send intro email for a single patch (issue1120)

hgext/patchbomb.py

@@ -1,486 +1,488 b''
 '''sending Mercurial changesets as a series of patch emails
 
 The series is started off with a "[PATCH 0 of N]" introduction,
 which describes the series as a whole.
 
 Each patch email has a Subject line of "[PATCH M of N] ...", using
 the first line of the changeset description as the subject text.
 The message contains two or three body parts:
 
   The remainder of the changeset description.
 
   [Optional] If the diffstat program is installed, the result of
   running diffstat on the patch.
 
   The patch itself, as generated by "hg export".
 
 Each message refers to all of its predecessors using the In-Reply-To
 and References headers, so they will show up as a sequence in
 threaded mail and news readers, and in mail archives.
 
 For each changeset, you will be prompted with a diffstat summary and
 the changeset summary, so you can be sure you are sending the right changes.
 
 To enable this extension:
 
   [extensions]
   hgext.patchbomb =
 
 To configure other defaults, add a section like this to your hgrc file:
 
   [email]
   from = My Name <my@email>
   to = recipient1, recipient2, ...
   cc = cc1, cc2, ...
   bcc = bcc1, bcc2, ...
 
 Then you can use the "hg email" command to mail a series of changesets
 as a patchbomb.
 
 To avoid sending patches prematurely, it is a good idea to first run
 the "email" command with the "-n" option (test only).  You will be
 prompted for an email recipient address, a subject an an introductory
 message describing the patches of your patchbomb.  Then when all is
 done, patchbomb messages are displayed. If PAGER environment variable
 is set, your pager will be fired up once for each patchbomb message, so
 you can verify everything is alright.
 
 The "-m" (mbox) option is also very useful.  Instead of previewing
 each patchbomb message in a pager or sending the messages directly,
 it will create a UNIX mailbox file with the patch emails.  This
 mailbox file can be previewed with any mail user agent which supports
 UNIX mbox files, i.e. with mutt:
 
   % mutt -R -f mbox
 
 When you are previewing the patchbomb messages, you can use `formail'
 (a utility that is commonly installed as part of the procmail package),
 to send each message out:
 
   % formail -s sendmail -bm -t < mbox
 
 That should be all. Now your patchbomb is on its way out.'''
 
 import os, errno, socket, tempfile, cStringIO
 import email.MIMEMultipart, email.MIMEBase
 import email.Utils, email.Encoders, email.Generator
 from mercurial import cmdutil, commands, hg, mail, patch, util
 from mercurial.i18n import _
 from mercurial.node import bin
 
 class exportee:
     def __init__(self, container):
         self.lines = []
         self.container = container
         self.name = 'email'
 
     def write(self, data):
         self.lines.append(data)
 
     def close(self):
         self.container.append(''.join(self.lines).split('\n'))
         self.lines = []
 
 def prompt(ui, prompt, default=None, rest=': ', empty_ok=False):
     if not ui.interactive:
         return default
     if default:
         prompt += ' [%s]' % default
     prompt += rest
     while True:
         r = ui.prompt(prompt, default=default)
         if r:
             return r
         if default is not None:
             return default
         if empty_ok:
             return r
         ui.warn(_('Please enter a valid value.\n'))
 
 def cdiffstat(ui, summary, patchlines):
     s = patch.diffstat(patchlines)
     if s:
         if summary:
             ui.write(summary, '\n')
             ui.write(s, '\n')
         ans = prompt(ui, _('Does the diffstat above look okay? '), 'y')
         if not ans.lower().startswith('y'):
             raise util.Abort(_('diffstat rejected'))
     elif s is None:
         ui.warn(_('no diffstat information available\n'))
         s = ''
     return s
 
 def makepatch(ui, repo, patch, opts, _charsets, idx, total, patchname=None):
 
     desc = []
     node = None
     body = ''
 
     for line in patch:
         if line.startswith('#'):
             if line.startswith('# Node ID'):
                 node = line.split()[-1]
             continue
         if line.startswith('diff -r') or line.startswith('diff --git'):
             break
         desc.append(line)
 
     if not patchname and not node:
         raise ValueError
 
     if opts.get('attach'):
         body = ('\n'.join(desc[1:]).strip() or
                 'Patch subject is complete summary.')
         body += '\n\n\n'
 
     if opts.get('plain'):
         while patch and patch[0].startswith('# '):
             patch.pop(0)
         if patch:
             patch.pop(0)
         while patch and not patch[0].strip():
             patch.pop(0)
 
     if opts.get('diffstat'):
         body += cdiffstat(ui, '\n'.join(desc), patch) + '\n\n'
 
     if opts.get('attach') or opts.get('inline'):
         msg = email.MIMEMultipart.MIMEMultipart()
         if body:
             msg.attach(mail.mimeencode(ui, body, _charsets, opts.get('test')))
         p = mail.mimetextpatch('\n'.join(patch), 'x-patch', opts.get('test'))
         binnode = bin(node)
         # if node is mq patch, it will have patch file name as tag
         if not patchname:
             patchtags = [t for t in repo.nodetags(binnode)
                          if t.endswith('.patch') or t.endswith('.diff')]
             if patchtags:
                 patchname = patchtags[0]
             elif total > 1:
                 patchname = cmdutil.make_filename(repo, '%b-%n.patch',
                                                   binnode, seqno=idx, total=total)
             else:
                 patchname = cmdutil.make_filename(repo, '%b.patch', binnode)
         disposition = 'inline'
         if opts.get('attach'):
             disposition = 'attachment'
         p['Content-Disposition'] = disposition + '; filename=' + patchname
         msg.attach(p)
     else:
         body += '\n'.join(patch)
         msg = mail.mimetextpatch(body, display=opts.get('test'))
 
     subj = desc[0].strip().rstrip('. ')
-    if total == 1:
+    if total == 1 and not opts.get('intro'):
         subj = '[PATCH] ' + (opts.get('subject') or subj)
     else:
         tlen = len(str(total))
         subj = '[PATCH %0*d of %d] %s' % (tlen, idx, total, subj)
     msg['Subject'] = mail.headencode(ui, subj, _charsets, opts.get('test'))
     msg['X-Mercurial-Node'] = node
     return msg, subj
 
 def patchbomb(ui, repo, *revs, **opts):
     '''send changesets by email
 
     By default, diffs are sent in the format generated by hg export,
     one per message.  The series starts with a "[PATCH 0 of N]"
     introduction, which describes the series as a whole.
 
     Each patch email has a Subject line of "[PATCH M of N] ...", using
     the first line of the changeset description as the subject text.
     The message contains two or three body parts.  First, the rest of
     the changeset description.  Next, (optionally) if the diffstat
     program is installed, the result of running diffstat on the patch.
     Finally, the patch itself, as generated by "hg export".
 
     With --outgoing, emails will be generated for patches not
     found in the destination repository (or only those which are
     ancestors of the specified revisions if any are provided)
 
     With --bundle, changesets are selected as for --outgoing,
     but a single email containing a binary Mercurial bundle as an
     attachment will be sent.
 
     Examples:
 
     hg email -r 3000          # send patch 3000 only
     hg email -r 3000 -r 3001  # send patches 3000 and 3001
     hg email -r 3000:3005     # send patches 3000 through 3005
     hg email 3000             # send patch 3000 (deprecated)
 
     hg email -o               # send all patches not in default
     hg email -o DEST          # send all patches not in DEST
     hg email -o -r 3000       # send all ancestors of 3000 not in default
     hg email -o -r 3000 DEST  # send all ancestors of 3000 not in DEST
 
     hg email -b               # send bundle of all patches not in default
     hg email -b DEST          # send bundle of all patches not in DEST
     hg email -b -r 3000       # bundle of all ancestors of 3000 not in default
     hg email -b -r 3000 DEST  # bundle of all ancestors of 3000 not in DEST
 
     Before using this command, you will need to enable email in your hgrc.
     See the [email] section in hgrc(5) for details.
     '''
 
     _charsets = mail._charsets(ui)
 
     def outgoing(dest, revs):
         '''Return the revisions present locally but not in dest'''
         dest = ui.expandpath(dest or 'default-push', dest or 'default')
         revs = [repo.lookup(rev) for rev in revs]
         other = hg.repository(ui, dest)
         ui.status(_('comparing with %s\n') % dest)
         o = repo.findoutgoing(other)
         if not o:
             ui.status(_("no changes found\n"))
             return []
         o = repo.changelog.nodesbetween(o, revs or None)[0]
         return [str(repo.changelog.rev(r)) for r in o]
 
     def getbundle(dest):
         tmpdir = tempfile.mkdtemp(prefix='hg-email-bundle-')
         tmpfn = os.path.join(tmpdir, 'bundle')
         try:
             commands.bundle(ui, repo, tmpfn, dest, **opts)
             return open(tmpfn, 'rb').read()
         finally:
             try:
                 os.unlink(tmpfn)
             except:
                 pass
             os.rmdir(tmpdir)
 
     if not (opts.get('test') or opts.get('mbox')):
         # really sending
         mail.validateconfig(ui)
 
     if not (revs or opts.get('rev')
             or opts.get('outgoing') or opts.get('bundle')
             or opts.get('patches')):
         raise util.Abort(_('specify at least one changeset with -r or -o'))
 
     cmdutil.setremoteconfig(ui, opts)
     if opts.get('outgoing') and opts.get('bundle'):
         raise util.Abort(_("--outgoing mode always on with --bundle;"
                            " do not re-specify --outgoing"))
 
     if opts.get('outgoing') or opts.get('bundle'):
         if len(revs) > 1:
             raise util.Abort(_("too many destinations"))
         dest = revs and revs[0] or None
         revs = []
 
     if opts.get('rev'):
         if revs:
             raise util.Abort(_('use only one form to specify the revision'))
         revs = opts.get('rev')
 
     if opts.get('outgoing'):
         revs = outgoing(dest, opts.get('rev'))
     if opts.get('bundle'):
         opts['revs'] = revs
 
     # start
     if opts.get('date'):
         start_time = util.parsedate(opts.get('date'))
     else:
         start_time = util.makedate()
 
     def genmsgid(id):
         return '<%s.%s@%s>' % (id[:20], int(start_time[0]), socket.getfqdn())
 
     def getdescription(body, sender):
         if opts.get('desc'):
             body = open(opts.get('desc')).read()
         else:
             ui.write(_('\nWrite the introductory message for the '
                        'patch series.\n\n'))
             body = ui.edit(body, sender)
         return body
 
     def getpatchmsgs(patches, patchnames=None):
         jumbo = []
         msgs = []
 
         ui.write(_('This patch series consists of %d patches.\n\n')
                  % len(patches))
 
         name = None
         for p, i in zip(patches, xrange(len(patches))):
             jumbo.extend(p)
             if patchnames:
                 name = patchnames[i]
             msg = makepatch(ui, repo, p, opts, _charsets, i + 1,
                             len(patches), name)
             msgs.append(msg)
 
-        if len(patches) > 1:
+        if len(patches) > 1 or opts.get('intro'):
             tlen = len(str(len(patches)))
 
             subj = '[PATCH %0*d of %d] %s' % (
                 tlen, 0, len(patches),
                 opts.get('subject') or
                 prompt(ui, 'Subject:',
                        rest=' [PATCH %0*d of %d] ' % (tlen, 0, len(patches))))
 
             body = ''
             if opts.get('diffstat'):
                 d = cdiffstat(ui, _('Final summary:\n'), jumbo)
                 if d:
                     body = '\n' + d
 
             body = getdescription(body, sender)
             msg = mail.mimeencode(ui, body, _charsets, opts.get('test'))
             msg['Subject'] = mail.headencode(ui, subj, _charsets,
                                              opts.get('test'))
 
             msgs.insert(0, (msg, subj))
         return msgs
 
     def getbundlemsgs(bundle):
         subj = (opts.get('subject')
                 or prompt(ui, 'Subject:', 'A bundle for your repository'))
 
         body = getdescription('', sender)
         msg = email.MIMEMultipart.MIMEMultipart()
         if body:
             msg.attach(mail.mimeencode(ui, body, _charsets, opts.get('test')))
         datapart = email.MIMEBase.MIMEBase('application', 'x-mercurial-bundle')
         datapart.set_payload(bundle)
         datapart.add_header('Content-Disposition', 'attachment',
                             filename='bundle.hg')
         email.Encoders.encode_base64(datapart)
         msg.attach(datapart)
         msg['Subject'] = mail.headencode(ui, subj, _charsets, opts.get('test'))
         return [(msg, subj)]
 
     sender = (opts.get('from') or ui.config('email', 'from') or
               ui.config('patchbomb', 'from') or
               prompt(ui, 'From', ui.username()))
 
     patches = opts.get('patches')
     if patches:
         msgs = getpatchmsgs(patches, opts.get('patchnames'))
     elif opts.get('bundle'):
         msgs = getbundlemsgs(getbundle(dest))
     else:
         patches = []
         commands.export(ui, repo, *revs, **{'output': exportee(patches),
                                             'switch_parent': False,
                                             'text': None,
                                             'git': opts.get('git')})
         msgs = getpatchmsgs(patches)
 
     def getaddrs(opt, prpt, default = None):
         addrs = opts.get(opt) or (ui.config('email', opt) or
                                   ui.config('patchbomb', opt) or
                                   prompt(ui, prpt, default)).split(',')
         return [mail.addressencode(ui, a.strip(), _charsets, opts.get('test'))
                 for a in addrs if a.strip()]
 
     to = getaddrs('to', 'To')
     cc = getaddrs('cc', 'Cc', '')
 
     bcc = opts.get('bcc') or (ui.config('email', 'bcc') or
                           ui.config('patchbomb', 'bcc') or '').split(',')
     bcc = [mail.addressencode(ui, a.strip(), _charsets, opts.get('test'))
            for a in bcc if a.strip()]
 
     ui.write('\n')
 
     parent = None
 
     sender_addr = email.Utils.parseaddr(sender)[1]
     sender = mail.addressencode(ui, sender, _charsets, opts.get('test'))
     sendmail = None
     for m, subj in msgs:
         try:
             m['Message-Id'] = genmsgid(m['X-Mercurial-Node'])
         except TypeError:
             m['Message-Id'] = genmsgid('patchbomb')
         if parent:
             m['In-Reply-To'] = parent
         else:
             parent = m['Message-Id']
         m['Date'] = util.datestr(start_time, "%a, %d %b %Y %H:%M:%S %1%2")
 
         start_time = (start_time[0] + 1, start_time[1])
         m['From'] = sender
         m['To'] = ', '.join(to)
         if cc:
             m['Cc']  = ', '.join(cc)
         if bcc:
             m['Bcc'] = ', '.join(bcc)
         if opts.get('test'):
             ui.status(_('Displaying '), subj, ' ...\n')
             ui.flush()
             if 'PAGER' in os.environ:
                 fp = util.popen(os.environ['PAGER'], 'w')
             else:
                 fp = ui
             generator = email.Generator.Generator(fp, mangle_from_=False)
             try:
                 generator.flatten(m, 0)
                 fp.write('\n')
             except IOError, inst:
                 if inst.errno != errno.EPIPE:
                     raise
             if fp is not ui:
                 fp.close()
         elif opts.get('mbox'):
             ui.status(_('Writing '), subj, ' ...\n')
             fp = open(opts.get('mbox'), 'In-Reply-To' in m and 'ab+' or 'wb+')
             generator = email.Generator.Generator(fp, mangle_from_=True)
             date = util.datestr(start_time, '%a %b %d %H:%M:%S %Y')
             fp.write('From %s %s\n' % (sender_addr, date))
             generator.flatten(m, 0)
             fp.write('\n\n')
             fp.close()
         else:
             if not sendmail:
                 sendmail = mail.connect(ui)
             ui.status(_('Sending '), subj, ' ...\n')
             # Exim does not remove the Bcc field
             del m['Bcc']
             fp = cStringIO.StringIO()
             generator = email.Generator.Generator(fp, mangle_from_=False)
             generator.flatten(m, 0)
             sendmail(sender, to + bcc + cc, fp.getvalue())
 
 emailopts = [
           ('a', 'attach', None, _('send patches as attachments')),
           ('i', 'inline', None, _('send patches as inline attachments')),
           ('', 'bcc', [], _('email addresses of blind copy recipients')),
           ('c', 'cc', [], _('email addresses of copy recipients')),
           ('d', 'diffstat', None, _('add diffstat output to messages')),
           ('', 'date', '', _('use the given date as the sending date')),
           ('', 'desc', '', _('use the given file as the series description')),
           ('f', 'from', '', _('email address of sender')),
           ('n', 'test', None, _('print messages that would be sent')),
           ('m', 'mbox', '',
            _('write messages to mbox file instead of sending them')),
           ('s', 'subject', '',
            _('subject of first message (intro or single patch)')),
           ('t', 'to', [], _('email addresses of recipients')),
          ]
 
 
 cmdtable = {
     "email":
         (patchbomb,
          [('g', 'git', None, _('use git extended diff format')),
           ('', 'plain', None, _('omit hg patch header')),
           ('o', 'outgoing', None,
            _('send changes not found in the target repository')),
           ('b', 'bundle', None,
            _('send changes not in target as a binary bundle')),
           ('r', 'rev', [], _('a revision to send')),
           ('', 'force', None,
            _('run even when remote repository is unrelated (with -b)')),
           ('', 'base', [],
            _('a base changeset to specify instead of a destination (with -b)')),
+          ('', 'intro', None,
+           _('send an introduction email for a single patch')),
          ] + emailopts + commands.remoteopts,
          _('hg email [OPTION]... [DEST]...'))
 }

tests/test-patchbomb

@@ -1,108 +1,116 b''
 #!/bin/sh
 
 fixheaders()
 {
     sed -e 's/\(Message-Id:.*@\).*/\1/'  \
         -e 's/\(In-Reply-To:.*@\).*/\1/' \
         -e 's/===.*/===/'
 }
 
 echo "[extensions]" >> $HGRCPATH
 echo "patchbomb=" >> $HGRCPATH
 
 hg init t
 cd t
 echo a > a
 hg commit -Ama -d '1 0'
 
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar tip | \
   fixheaders
 
 echo b > b
 hg commit -Amb -d '2 0'
 
 hg email --date '1970-1-1 0:2' -n -f quux -t foo -c bar -s test 0:tip | \
   fixheaders
 
 hg email -m test.mbox -f quux -t foo -c bar -s test 0:tip
 
 cd ..
 
 hg clone -q t t2
 cd t2
 echo c > c
 hg commit -Amc -d '3 0'
 
 cat > description <<EOF
 a multiline
 
 description
 EOF
 
 echo "% test bundle and description"
 hg email --date '1970-1-1 0:3' -n -f quux -t foo \
     -c bar -s test -r tip -b --desc description | \
     fixheaders
 
 echo "% utf-8 patch"
 python -c 'fp = open("utf", "wb"); fp.write("h\xC3\xB6mma!\n"); fp.close();'
 hg commit -A -d '4 0' -m 'charset=utf-8; content-transfer-encoding: base64'
 
 echo "% no mime encoding for email --test"
 hg email --date '1970-1-1 0:4' -f quux -t foo -c bar -r tip -n | fixheaders > mailtest
 echo "% md5sum of 8-bit output"
 $TESTDIR/md5sum.py mailtest
 rm mailtest
 
 echo "% mime encoded mbox"
 hg email --date '1970-1-1 0:4' -f quux -t foo -c bar -r tip -m mbox
 cat mbox | fixheaders
 rm mbox
 
 echo "% iso-8859-1 patch"
 python -c 'fp = open("isolatin", "wb"); fp.write("h\xF6mma!\n"); fp.close();'
 hg commit -A -d '5 0' -m 'charset=us-ascii; content-transfer-encoding: 8bit'
 
 echo "% fake ascii mbox"
 hg email --date '1970-1-1 0:5' -f quux -t foo -c bar -r tip -m mbox
 fixheaders < mbox > mboxfix
 echo "% md5sum of 8-bit output"
 $TESTDIR/md5sum.py mboxfix
 
 echo "% test diffstat for single patch"
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar -s test -d -y 2 | \
   fixheaders
 
 echo "% test diffstat for multiple patches"
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar -s test -d -y 0:1 | \
   fixheaders
 
 echo "% test inline for single patch"
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar -s test -i 2 | \
   fixheaders
 
 echo "% test inline for multiple patches"
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar -s test -i 0:1 | \
   fixheaders
 
 echo "% test attach for single patch"
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar -s test -a 2 | \
   fixheaders
 
 echo "% test attach for multiple patches"
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar -s test -a 0:1 | \
   fixheaders
 
+echo "% test intro for single patch"
+hg email --date '1970-1-1 0:1' -n --intro -f quux -t foo -c bar -s test 2 | \
+  fixheaders
+
+echo "% test intro for multiple patches"
+hg email --date '1970-1-1 0:1' -n --intro -f quux -t foo -c bar -s test 0:1 | \
+  fixheaders
+
 echo "% tagging csets"
 hg tag -r0 zero zero.foo
 hg tag -r1 one one.patch
 hg tag -r2 two two.diff
 
 echo "% test inline for single named patch"
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar -s test -i 2 | \
   fixheaders
 
 echo "% test inline for multiple named/unnamed patches"
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar -s test -i 0:1 | \
   fixheaders
 

tests/test-patchbomb.out

@@ -1,700 +1,816 b''
 adding a
 This patch series consists of 1 patches.
 
 
 Displaying [PATCH] a ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH] a
 X-Mercurial-Node: 8580ff50825a50c8f716709acdf8de0deddcd6ab
 Message-Id: <8580ff50825a50c8f716.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 # HG changeset patch
 # User test
 # Date 1 0
 # Node ID 8580ff50825a50c8f716709acdf8de0deddcd6ab
 # Parent  0000000000000000000000000000000000000000
 a
 
 diff -r 000000000000 -r 8580ff50825a a
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/a	Thu Jan 01 00:00:01 1970 +0000
 @@ -0,0 +1,1 @@
 +a
 
 adding b
 This patch series consists of 2 patches.
 
 
 Write the introductory message for the patch series.
 
 
 Displaying [PATCH 0 of 2] test ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 0 of 2] test
 Message-Id: <patchbomb.120@
 Date: Thu, 01 Jan 1970 00:02:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 
 Displaying [PATCH 1 of 2] a ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 1 of 2] a
 X-Mercurial-Node: 8580ff50825a50c8f716709acdf8de0deddcd6ab
 Message-Id: <8580ff50825a50c8f716.121@
 In-Reply-To: <patchbomb.120@
 Date: Thu, 01 Jan 1970 00:02:01 +0000
 From: quux
 To: foo
 Cc: bar
 
 # HG changeset patch
 # User test
 # Date 1 0
 # Node ID 8580ff50825a50c8f716709acdf8de0deddcd6ab
 # Parent  0000000000000000000000000000000000000000
 a
 
 diff -r 000000000000 -r 8580ff50825a a
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/a	Thu Jan 01 00:00:01 1970 +0000
 @@ -0,0 +1,1 @@
 +a
 
 Displaying [PATCH 2 of 2] b ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 2 of 2] b
 X-Mercurial-Node: 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 Message-Id: <97d72e5f12c7e84f8506.122@
 In-Reply-To: <patchbomb.120@
 Date: Thu, 01 Jan 1970 00:02:02 +0000
 From: quux
 To: foo
 Cc: bar
 
 # HG changeset patch
 # User test
 # Date 2 0
 # Node ID 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 # Parent  8580ff50825a50c8f716709acdf8de0deddcd6ab
 b
 
 diff -r 8580ff50825a -r 97d72e5f12c7 b
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/b	Thu Jan 01 00:00:02 1970 +0000
 @@ -0,0 +1,1 @@
 +b
 
 This patch series consists of 2 patches.
 
 
 Write the introductory message for the patch series.
 
 
 Writing [PATCH 0 of 2] test ...
 Writing [PATCH 1 of 2] a ...
 Writing [PATCH 2 of 2] b ...
 adding c
 % test bundle and description
 searching for changes
 1 changesets found
 
 Displaying test ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: test
 Message-Id: <patchbomb.180@
 Date: Thu, 01 Jan 1970 00:03:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 
 a multiline
 
 description
 
 --===
 Content-Type: application/x-mercurial-bundle
 MIME-Version: 1.0
 Content-Disposition: attachment; filename="bundle.hg"
 Content-Transfer-Encoding: base64
 
 SEcxMEJaaDkxQVkmU1nvR7I3AAAN////lFYQWj1/4HwRkdC/AywIAk0E4pfoSIIIgQCgGEQOcLAA
 2tA1VPyp4mkeoG0EaaPU0GTT1GjRiNPIg9CZGBqZ6UbU9J+KFU09DNUaGgAAAAAANAGgAAAAA1U8
 oGgAADQGgAANNANAAAAAAZipFLz3XoakCEQB3PVPyHJVi1iYkAAKQAZQGpQGZESInRnCFMqLDla2
 Bx3qfRQeA2N4lnzKkAmP8kR2asievLLXXebVU8Vg4iEBqcJNJAxIapSU6SM4888ZAciRG6MYAIEE
 SlIBpFisgGkyRjX//TMtfcUAEsGu56+YnE1OlTZmzKm8BSu2rvo4rHAYYaadIFFuTy0LYgIkgLVD
 sgVa2F19D1tx9+hgbAygLgQwaIqcDdgA4BjQgIiz/AEP72++llgDKhKducqodGE4B0ETqF3JFOFC
 Q70eyNw=
 --===
 % utf-8 patch
 adding description
 adding utf
 % no mime encoding for email --test
 % md5sum of 8-bit output
 ad877786716d09fd7843cf0ed5e3d2a8  mailtest
 % mime encoded mbox
 This patch series consists of 1 patches.
 
 
 Writing [PATCH] charset=utf-8; content-transfer-encoding: base64 ...
 From quux Thu Jan 01 00:04:01 1970
 Content-Type: text/plain; charset="utf-8"
 MIME-Version: 1.0
 Content-Transfer-Encoding: base64
 Subject: [PATCH] charset=utf-8; content-transfer-encoding: base64
 X-Mercurial-Node: c3c9e37db9f4fe4882cda39baf42fed6bad8b15a
 Message-Id: <c3c9e37db9f4fe4882cd.240@
 Date: Thu, 01 Jan 1970 00:04:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 IyBIRyBjaGFuZ2VzZXQgcGF0Y2gKIyBVc2VyIHRlc3QKIyBEYXRlIDQgMAojIE5vZGUgSUQgYzNj
 OWUzN2RiOWY0ZmU0ODgyY2RhMzliYWY0MmZlZDZiYWQ4YjE1YQojIFBhcmVudCAgZmYyYzlmYTIw
 MThiMTVmYTc0YjMzMzYzYmRhOTUyNzMyM2UyYTk5ZgpjaGFyc2V0PXV0Zi04OyBjb250ZW50LXRy
 YW5zZmVyLWVuY29kaW5nOiBiYXNlNjQKCmRpZmYgLXIgZmYyYzlmYTIwMThiIC1yIGMzYzllMzdk
 YjlmNCBkZXNjcmlwdGlvbgotLS0gL2Rldi9udWxsCVRodSBKYW4gMDEgMDA6MDA6MDAgMTk3MCAr
 MDAwMAorKysgYi9kZXNjcmlwdGlvbglUaHUgSmFuIDAxIDAwOjAwOjA0IDE5NzAgKzAwMDAKQEAg
 LTAsMCArMSwzIEBACithIG11bHRpbGluZQorCitkZXNjcmlwdGlvbgpkaWZmIC1yIGZmMmM5ZmEy
 MDE4YiAtciBjM2M5ZTM3ZGI5ZjQgdXRmCi0tLSAvZGV2L251bGwJVGh1IEphbiAwMSAwMDowMDow
 MCAxOTcwICswMDAwCisrKyBiL3V0ZglUaHUgSmFuIDAxIDAwOjAwOjA0IDE5NzAgKzAwMDAKQEAg
 LTAsMCArMSwxIEBACitow7ZtbWEhCg==
 
 
 % iso-8859-1 patch
 adding isolatin
 % fake ascii mbox
 This patch series consists of 1 patches.
 
 
 Writing [PATCH] charset=us-ascii; content-transfer-encoding: 8bit ...
 % md5sum of 8-bit output
 90fae277a4a85255e8262174fcefb59f  mboxfix
 % test diffstat for single patch
 This patch series consists of 1 patches.
 
 c
 
 files patched: 1
 
 
 Displaying [PATCH] test ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH] test
 X-Mercurial-Node: ff2c9fa2018b15fa74b33363bda9527323e2a99f
 Message-Id: <ff2c9fa2018b15fa74b3.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 files patched: 1
 
 
 # HG changeset patch
 # User test
 # Date 3 0
 # Node ID ff2c9fa2018b15fa74b33363bda9527323e2a99f
 # Parent  97d72e5f12c7e84f85064aa72e5a297142c36ed9
 c
 
 diff -r 97d72e5f12c7 -r ff2c9fa2018b c
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/c	Thu Jan 01 00:00:03 1970 +0000
 @@ -0,0 +1,1 @@
 +c
 
 % test diffstat for multiple patches
 This patch series consists of 2 patches.
 
 a
 
 files patched: 1
 
 b
 
 files patched: 1
 
 Final summary:
 
 files patched: 2
 
 
 Write the introductory message for the patch series.
 
 
 Displaying [PATCH 0 of 2] test ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 0 of 2] test
 Message-Id: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 
 files patched: 2
 
 Displaying [PATCH 1 of 2] a ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 1 of 2] a
 X-Mercurial-Node: 8580ff50825a50c8f716709acdf8de0deddcd6ab
 Message-Id: <8580ff50825a50c8f716.61@
 In-Reply-To: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:01 +0000
 From: quux
 To: foo
 Cc: bar
 
 files patched: 1
 
 
 # HG changeset patch
 # User test
 # Date 1 0
 # Node ID 8580ff50825a50c8f716709acdf8de0deddcd6ab
 # Parent  0000000000000000000000000000000000000000
 a
 
 diff -r 000000000000 -r 8580ff50825a a
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/a	Thu Jan 01 00:00:01 1970 +0000
 @@ -0,0 +1,1 @@
 +a
 
 Displaying [PATCH 2 of 2] b ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 2 of 2] b
 X-Mercurial-Node: 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 Message-Id: <97d72e5f12c7e84f8506.62@
 In-Reply-To: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:02 +0000
 From: quux
 To: foo
 Cc: bar
 
 files patched: 1
 
 
 # HG changeset patch
 # User test
 # Date 2 0
 # Node ID 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 # Parent  8580ff50825a50c8f716709acdf8de0deddcd6ab
 b
 
 diff -r 8580ff50825a -r 97d72e5f12c7 b
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/b	Thu Jan 01 00:00:02 1970 +0000
 @@ -0,0 +1,1 @@
 +b
 
 % test inline for single patch
 This patch series consists of 1 patches.
 
 
 Displaying [PATCH] test ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH] test
 X-Mercurial-Node: ff2c9fa2018b15fa74b33363bda9527323e2a99f
 Message-Id: <ff2c9fa2018b15fa74b3.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline; filename=t2.patch
 
 # HG changeset patch
 # User test
 # Date 3 0
 # Node ID ff2c9fa2018b15fa74b33363bda9527323e2a99f
 # Parent  97d72e5f12c7e84f85064aa72e5a297142c36ed9
 c
 
 diff -r 97d72e5f12c7 -r ff2c9fa2018b c
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/c	Thu Jan 01 00:00:03 1970 +0000
 @@ -0,0 +1,1 @@
 +c
 
 --===
 % test inline for multiple patches
 This patch series consists of 2 patches.
 
 
 Write the introductory message for the patch series.
 
 
 Displaying [PATCH 0 of 2] test ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 0 of 2] test
 Message-Id: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 
 Displaying [PATCH 1 of 2] a ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH 1 of 2] a
 X-Mercurial-Node: 8580ff50825a50c8f716709acdf8de0deddcd6ab
 Message-Id: <8580ff50825a50c8f716.61@
 In-Reply-To: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:01 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline; filename=t2-1.patch
 
 # HG changeset patch
 # User test
 # Date 1 0
 # Node ID 8580ff50825a50c8f716709acdf8de0deddcd6ab
 # Parent  0000000000000000000000000000000000000000
 a
 
 diff -r 000000000000 -r 8580ff50825a a
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/a	Thu Jan 01 00:00:01 1970 +0000
 @@ -0,0 +1,1 @@
 +a
 
 --===
 Displaying [PATCH 2 of 2] b ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH 2 of 2] b
 X-Mercurial-Node: 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 Message-Id: <97d72e5f12c7e84f8506.62@
 In-Reply-To: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:02 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline; filename=t2-2.patch
 
 # HG changeset patch
 # User test
 # Date 2 0
 # Node ID 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 # Parent  8580ff50825a50c8f716709acdf8de0deddcd6ab
 b
 
 diff -r 8580ff50825a -r 97d72e5f12c7 b
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/b	Thu Jan 01 00:00:02 1970 +0000
 @@ -0,0 +1,1 @@
 +b
 
 --===
 % test attach for single patch
 This patch series consists of 1 patches.
 
 
 Displaying [PATCH] test ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH] test
 X-Mercurial-Node: ff2c9fa2018b15fa74b33363bda9527323e2a99f
 Message-Id: <ff2c9fa2018b15fa74b3.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 
 Patch subject is complete summary.
 
 
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: attachment; filename=t2.patch
 
 # HG changeset patch
 # User test
 # Date 3 0
 # Node ID ff2c9fa2018b15fa74b33363bda9527323e2a99f
 # Parent  97d72e5f12c7e84f85064aa72e5a297142c36ed9
 c
 
 diff -r 97d72e5f12c7 -r ff2c9fa2018b c
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/c	Thu Jan 01 00:00:03 1970 +0000
 @@ -0,0 +1,1 @@
 +c
 
 --===
 % test attach for multiple patches
 This patch series consists of 2 patches.
 
 
 Write the introductory message for the patch series.
 
 
 Displaying [PATCH 0 of 2] test ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 0 of 2] test
 Message-Id: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 
 Displaying [PATCH 1 of 2] a ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH 1 of 2] a
 X-Mercurial-Node: 8580ff50825a50c8f716709acdf8de0deddcd6ab
 Message-Id: <8580ff50825a50c8f716.61@
 In-Reply-To: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:01 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 
 Patch subject is complete summary.
 
 
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: attachment; filename=t2-1.patch
 
 # HG changeset patch
 # User test
 # Date 1 0
 # Node ID 8580ff50825a50c8f716709acdf8de0deddcd6ab
 # Parent  0000000000000000000000000000000000000000
 a
 
 diff -r 000000000000 -r 8580ff50825a a
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/a	Thu Jan 01 00:00:01 1970 +0000
 @@ -0,0 +1,1 @@
 +a
 
 --===
 Displaying [PATCH 2 of 2] b ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH 2 of 2] b
 X-Mercurial-Node: 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 Message-Id: <97d72e5f12c7e84f8506.62@
 In-Reply-To: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:02 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 
 Patch subject is complete summary.
 
 
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: attachment; filename=t2-2.patch
 
 # HG changeset patch
 # User test
 # Date 2 0
 # Node ID 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 # Parent  8580ff50825a50c8f716709acdf8de0deddcd6ab
 b
 
 diff -r 8580ff50825a -r 97d72e5f12c7 b
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/b	Thu Jan 01 00:00:02 1970 +0000
 @@ -0,0 +1,1 @@
 +b
 
 --===
+% test intro for single patch
+This patch series consists of 1 patches.
+
+
+Write the introductory message for the patch series.
+
+
+Displaying [PATCH 0 of 1] test ...
+Content-Type: text/plain; charset="us-ascii"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [PATCH 0 of 1] test
+Message-Id: <patchbomb.60@
+Date: Thu, 01 Jan 1970 00:01:00 +0000
+From: quux
+To: foo
+Cc: bar
+
+
+Displaying [PATCH 1 of 1] c ...
+Content-Type: text/plain; charset="us-ascii"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [PATCH 1 of 1] c
+X-Mercurial-Node: ff2c9fa2018b15fa74b33363bda9527323e2a99f
+Message-Id: <ff2c9fa2018b15fa74b3.61@
+In-Reply-To: <patchbomb.60@
+Date: Thu, 01 Jan 1970 00:01:01 +0000
+From: quux
+To: foo
+Cc: bar
+
+# HG changeset patch
+# User test
+# Date 3 0
+# Node ID ff2c9fa2018b15fa74b33363bda9527323e2a99f
+# Parent  97d72e5f12c7e84f85064aa72e5a297142c36ed9
+c
+
+diff -r 97d72e5f12c7 -r ff2c9fa2018b c
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/c	Thu Jan 01 00:00:03 1970 +0000
+@@ -0,0 +1,1 @@
++c
+
+% test intro for multiple patches
+This patch series consists of 2 patches.
+
+
+Write the introductory message for the patch series.
+
+
+Displaying [PATCH 0 of 2] test ...
+Content-Type: text/plain; charset="us-ascii"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [PATCH 0 of 2] test
+Message-Id: <patchbomb.60@
+Date: Thu, 01 Jan 1970 00:01:00 +0000
+From: quux
+To: foo
+Cc: bar
+
+
+Displaying [PATCH 1 of 2] a ...
+Content-Type: text/plain; charset="us-ascii"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [PATCH 1 of 2] a
+X-Mercurial-Node: 8580ff50825a50c8f716709acdf8de0deddcd6ab
+Message-Id: <8580ff50825a50c8f716.61@
+In-Reply-To: <patchbomb.60@
+Date: Thu, 01 Jan 1970 00:01:01 +0000
+From: quux
+To: foo
+Cc: bar
+
+# HG changeset patch
+# User test
+# Date 1 0
+# Node ID 8580ff50825a50c8f716709acdf8de0deddcd6ab
+# Parent  0000000000000000000000000000000000000000
+a
+
+diff -r 000000000000 -r 8580ff50825a a
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/a	Thu Jan 01 00:00:01 1970 +0000
+@@ -0,0 +1,1 @@
++a
+
+Displaying [PATCH 2 of 2] b ...
+Content-Type: text/plain; charset="us-ascii"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [PATCH 2 of 2] b
+X-Mercurial-Node: 97d72e5f12c7e84f85064aa72e5a297142c36ed9
+Message-Id: <97d72e5f12c7e84f8506.62@
+In-Reply-To: <patchbomb.60@
+Date: Thu, 01 Jan 1970 00:01:02 +0000
+From: quux
+To: foo
+Cc: bar
+
+# HG changeset patch
+# User test
+# Date 2 0
+# Node ID 97d72e5f12c7e84f85064aa72e5a297142c36ed9
+# Parent  8580ff50825a50c8f716709acdf8de0deddcd6ab
+b
+
+diff -r 8580ff50825a -r 97d72e5f12c7 b
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/b	Thu Jan 01 00:00:02 1970 +0000
+@@ -0,0 +1,1 @@
++b
+
 % tagging csets
 % test inline for single named patch
 This patch series consists of 1 patches.
 
 
 Displaying [PATCH] test ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH] test
 X-Mercurial-Node: ff2c9fa2018b15fa74b33363bda9527323e2a99f
 Message-Id: <ff2c9fa2018b15fa74b3.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline; filename=two.diff
 
 # HG changeset patch
 # User test
 # Date 3 0
 # Node ID ff2c9fa2018b15fa74b33363bda9527323e2a99f
 # Parent  97d72e5f12c7e84f85064aa72e5a297142c36ed9
 c
 
 diff -r 97d72e5f12c7 -r ff2c9fa2018b c
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/c	Thu Jan 01 00:00:03 1970 +0000
 @@ -0,0 +1,1 @@
 +c
 
 --===
 % test inline for multiple named/unnamed patches
 This patch series consists of 2 patches.
 
 
 Write the introductory message for the patch series.
 
 
 Displaying [PATCH 0 of 2] test ...
 Content-Type: text/plain; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Subject: [PATCH 0 of 2] test
 Message-Id: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:00 +0000
 From: quux
 To: foo
 Cc: bar
 
 
 Displaying [PATCH 1 of 2] a ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH 1 of 2] a
 X-Mercurial-Node: 8580ff50825a50c8f716709acdf8de0deddcd6ab
 Message-Id: <8580ff50825a50c8f716.61@
 In-Reply-To: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:01 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline; filename=t2-1.patch
 
 # HG changeset patch
 # User test
 # Date 1 0
 # Node ID 8580ff50825a50c8f716709acdf8de0deddcd6ab
 # Parent  0000000000000000000000000000000000000000
 a
 
 diff -r 000000000000 -r 8580ff50825a a
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/a	Thu Jan 01 00:00:01 1970 +0000
 @@ -0,0 +1,1 @@
 +a
 
 --===
 Displaying [PATCH 2 of 2] b ...
 Content-Type: multipart/mixed; boundary="===
 MIME-Version: 1.0
 Subject: [PATCH 2 of 2] b
 X-Mercurial-Node: 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 Message-Id: <97d72e5f12c7e84f8506.62@
 In-Reply-To: <patchbomb.60@
 Date: Thu, 01 Jan 1970 00:01:02 +0000
 From: quux
 To: foo
 Cc: bar
 
 --===
 Content-Type: text/x-patch; charset="us-ascii"
 MIME-Version: 1.0
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline; filename=one.patch
 
 # HG changeset patch
 # User test
 # Date 2 0
 # Node ID 97d72e5f12c7e84f85064aa72e5a297142c36ed9
 # Parent  8580ff50825a50c8f716709acdf8de0deddcd6ab
 b
 
 diff -r 8580ff50825a -r 97d72e5f12c7 b
 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
 +++ b/b	Thu Jan 01 00:00:02 1970 +0000
 @@ -0,0 +1,1 @@
 +b
 
 --===