For me sending patches via git send-email fails because email address
conversion is failing. Something appends a ')' to x86/lkml@kernel.org.
I suspect the double '))' in MAINTAINERS is confusing the command.
I tried to send the trivial patch from v5.0 and v5.6 tag.

Is this a failure in ./scripts/get_maintainer.pl,
or is this something git does internally?
I'm sure others use such command on a daily basis, so likely something on
my end became broken at some point in the past.

Olaf

linux.git $ git send-email --reroll-count 1 --confirm=always --annotate --to-cmd ./scripts/get_maintainer.pl  HEAD^

(mbox) Adding cc: Olaf Hering <olaf@aepfle.de> from line 'From: Olaf Hering <olaf@aepfle.de>'
(body) Adding cc: Olaf Hering <olaf@aepfle.de> from line 'Signed-off-by: Olaf Hering <olaf@aepfle.de>'
(to-cmd) Adding to: "K. Y. Srinivasan" <kys@microsoft.com> from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: Haiyang Zhang <haiyangz@microsoft.com> from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: Stephen Hemminger <sthemmin@microsoft.com> from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: Sasha Levin <sashal@kernel.org> from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: Thomas Gleixner <tglx@linutronix.de> from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: Ingo Molnar <mingo@redhat.com> from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: Borislav Petkov <bp@alien8.de> from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: "H. Peter Anvin" <hpa@zytor.com> from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)) from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: devel@linuxdriverproject.org (open list:Hyper-V CORE AND DRIVERS) from: './scripts/get_maintainer.pl'
(to-cmd) Adding to: linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)) from: './scripts/get_maintainer.pl'

From: Olaf Hering <olaf@aepfle.de>
To: "K. Y. Srinivasan" <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Sasha Levin <sashal@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        x86@kernel.org) (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT),
        devel@linuxdriverproject.org (open list:Hyper-V CORE AND DRIVERS),
        linux-kernel@vger.kernel.org) (open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)
Cc: Olaf Hering <olaf@aepfle.de>
X-Mailer: git-send-email 2.16.4
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Send this email? ([y]es|[n]o|[q]uit|[a]ll): y
5.1.3 Invalid character in domain: <x86@kernel.org)>