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-rw-r--r--b4/command.py2
-rw-r--r--b4/mbox.py11
2 files changed, 11 insertions, 2 deletions
diff --git a/b4/command.py b/b4/command.py
index 1105a05..ef1e856 100644
--- a/b4/command.py
+++ b/b4/command.py
@@ -84,6 +84,8 @@ def cmd():
# b4 mbox
sp_mbox = subparsers.add_parser('mbox', help='Download a thread as an mbox file')
cmd_mbox_common_opts(sp_mbox)
+ sp_mbox.add_argument('-f', '--filter-dupes', dest='filterdupes', action='store_true', default=False,
+ help='When adding messages to existing maildir, filter out duplicates')
sp_mbox.set_defaults(func=cmd_mbox)
# b4 am
diff --git a/b4/mbox.py b/b4/mbox.py
index eeca363..38b2f0e 100644
--- a/b4/mbox.py
+++ b/b4/mbox.py
@@ -554,9 +554,16 @@ def main(cmdargs):
and os.path.isdir(os.path.join(cmdargs.outdir, 'cur'))
and os.path.isdir(os.path.join(cmdargs.outdir, 'tmp'))):
mdr = mailbox.Maildir(cmdargs.outdir)
+ have_msgids = set()
+ added = 0
+ if cmdargs.filterdupes:
+ for emsg in mdr:
+ have_msgids.add(b4.LoreMessage.get_clean_msgid(emsg))
for msg in mbx:
- mdr.add(msg)
- logger.info('Added to maildir %s', cmdargs.outdir)
+ if b4.LoreMessage.get_clean_msgid(msg) not in have_msgids:
+ added += 1
+ mdr.add(msg)
+ logger.info('Added to %s messages to maildir %s', added, cmdargs.outdir)
mbx.close()
os.unlink(threadfile)
return