odd b4 "Mail:" trailer added for USB patch

odd b4 "Mail:" trailer added for USB patch

[Greg KH]

When running the following command that I normally do to apply patches:
	b4 am -S -t -o - | git am -s
from my email client, for the patch with:
	Message-ID: <20260206-wip-jremmet-hd3ss3220_vbus_split-v4-1-ee5b4e402187@phytec.de>

I get:

Looking up https://lore.kernel.org/all/20260206-wip-jremmet-hd3ss3220_vbus_split-v4-1-ee5b4e402187@phytec.de/
Analyzing 1 messages in the thread
Analyzing 11 code-review messages
Checking attestation on all messages, may take a moment...
---
  ✓ [PATCH v4] usb: typec: hd3ss3220: Check if regulator needs to be switched
 be switched") (✓ DKIM/phytec.de)typec: hd3ss3220: Check if regulator needs to
    + Mail: j.remmet@pyhtec.de (✓ DKIM/phytec.de)
  ---
  ✓ Signed: DKIM/phytec.de
---
Total patches: 1
---
 Link: https://patch.msgid.link/20260206-wip-jremmet-hd3ss3220_vbus_split-v4-1-ee5b4e402187@phytec.de
 Base: applies clean to current tree
Applying: usb: typec: hd3ss3220: Check if regulator needs to be switched


It's that odd "Mail:" header being added, which then shows up in the
commit itself:

    Fixes: 27fbc19e52b9 ("usb: typec: hd3ss3220: Enable VBUS based on role state")
    Signed-off-by: Jan Remmet <j.remmet@phytec.de>
    Reviewed-by: Heikki Krogerus <heikki.krogerus@linu.intel.com>
    Fixes: 7e7025811579 ("usb: typec: hd3ss3220: Check if regulator needs to ^M be switched")
    Mail: j.remmet@pyhtec.de
    Link: https://patch.msgid.link/20260206-wip-jremmet-hd3ss3220_vbus_split-v4-1-ee5b4e402187@phytec.de
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Along with the extra "^M" in there (actual character) in the Fixes tag?

I'm using the latest git version of b4:

$ b4 --version
0.15-dev-47773

Any ideas?

thanks,

greg k-h

Re: odd b4 "Mail:" trailer added for USB patch

[Konstantin Ryabitsev]

On Fri, Feb 06, 2026 at 11:21:43AM +0100, Greg KH wrote:
> When running the following command that I normally do to apply patches:
> 	b4 am -S -t -o - | git am -s
> from my email client, for the patch with:
> 	Message-ID: <20260206-wip-jremmet-hd3ss3220_vbus_split-v4-1-ee5b4e402187@phytec.de>
> 
> I get:
> 
> Looking up https://lore.kernel.org/all/20260206-wip-jremmet-hd3ss3220_vbus_split-v4-1-ee5b4e402187@phytec.de/
> Analyzing 1 messages in the thread
> Analyzing 11 code-review messages
> Checking attestation on all messages, may take a moment...
> ---
>   ✓ [PATCH v4] usb: typec: hd3ss3220: Check if regulator needs to be switched
>  be switched") (✓ DKIM/phytec.de)typec: hd3ss3220: Check if regulator needs to
>     + Mail: j.remmet@pyhtec.de (✓ DKIM/phytec.de)

Sigh. This happens occasionally, because we can't have a strict list of
trailers we recognize for follow-ups (because of people's proclivity to use
things like Suggested-and-co-developed-by: or whatnot). We have a junklist of
things we know are bogus, but every now and again there's something we haven't
thought of (like people using "Mail" instead of "Email").

I'll add this to the junklist as well.

-K

Re: odd b4 "Mail:" trailer added for USB patch

[Konstantin Ryabitsev]

On Fri, Feb 06, 2026 at 11:21:43AM +0100, Greg KH wrote:
>   ✓ [PATCH v4] usb: typec: hd3ss3220: Check if regulator needs to be switched
>  be switched") (✓ DKIM/phytec.de)typec: hd3ss3220: Check if regulator needs to
>     + Mail: j.remmet@pyhtec.de (✓ DKIM/phytec.de)

bugspray tag b4/trailers

-- 
KR

Re: odd b4 "Mail:" trailer added for USB patch

[B4 Bugbot]

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Re: odd b4 "Mail:" trailer added for USB patch

[B4 Bugbot]

Konstantin Ryabitsev writes in commit 002f70670507a3edca307edd11b5e0000d9d73a2:

Add 'mail' to the known non-trailer ignore list

A code-review follow-up containing "Mail: someone@example.com" was
being picked up as a valid trailer and injected into the commit.
Add 'mail' to the ignore set alongside the already-ignored 'phone',
'email', and 'e-mail' entries so it is silently skipped during
follow-up trailer collection.

Closes: https://msgid.link/2026020637-cleft-viscosity-c984@gregkh # cd06df9
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Assisted-by: claude-opus-4-6

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