ez: dedupe cover letter CCs taken from individual patches

Make sure we don't duplicate addresses already added to CCs from
previous individual patches.

Reported-by: Nathan Chancellor <nathan@kernel.org>
Link: https://msgid.link/Y6zeRaKlqNhh72OD@dev-arch.thelio-3990X
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/b4/ez.py b/b4/ez.py
index 327ab0c..749c511 100644
--- a/b4/ez.py
+++ b/b4/ez.py
@@ -1474,10 +1474,12 @@ def cmd_send(cmdargs: argparse.Namespace) -> None:
                     mycc.append(pair)
         elif not commit and len(pccs):
             # the cover letter gets sent to folks with individual patch cc's
+            _seen = set(seen)
             for _commit, _ccs in pccs.items():
                 for pair in _ccs:
-                    if pair[1] not in seen:
+                    if pair[1] not in _seen:
                         mycc.append(pair)
+                        _seen.add(pair[1])
         if mycc and not myto:
             # Move all Cc's into To when there's no To:
             myto = mycc