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Date:   Tue, 15 Feb 2022 19:08:45 +0100
From:   Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc:     Heiko Stuebner <heiko@sntech.de>, linux-pwm@vger.kernel.org,
        Thierry Reding <thierry.reding@gmail.com>,
        Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com>,
        Sagar Kadam <sagar.kadam@sifive.com>,
        Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>,
        Lee Jones <lee.jones@linaro.org>,
        linux-riscv@lists.infradead.org, Vignesh R <vigneshr@ti.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Fabio Estevam <festevam@gmail.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        linux-rockchip@lists.infradead.org,
        Rahul Tanwar <rtanwar@maxlinear.com>,
        bcm-kernel-feedback-list@broadcom.com,
        NXP Linux Team <linux-imx@nxp.com>,
        Jeff LaBundy <jeff@labundy.com>, linux-sunxi@lists.linux.dev,
        devicetree@vger.kernel.org, Philipp Zabel <p.zabel@pengutronix.de>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Maxime Ripard <mripard@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
        linux-arm-kernel@lists.infradead.org,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
        linux-kernel@vger.kernel.org, Palmer Dabbelt <palmer@dabbelt.com>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Shawn Guo <shawnguo@kernel.org>
Subject: Re: [PATCH v2 00/15] pwm: dt-bindings: Include generic pwm schema
Message-ID: <20220215180845.vzzqwdaiaj7aqxry@pengutronix.de>
References: <20220214212154.8853-1-krzysztof.kozlowski@canonical.com>
 <20220215074030.3nugwproxjh3lwhl@pengutronix.de>
 <CA+Eumj42Hojp1m4deuWnqMOaaNaupTSkzPaNbL_0eyBL-aDi_g@mail.gmail.com>
 <7df71f8d-cdc3-4b2e-cf0a-7112eff28142@canonical.com>
 <20220215094106.k35pmoxt2nk44dsj@pengutronix.de>
 <20220215104952.3z7y2t5udwab64kh@pengutronix.de>
 <d042abb2-e5df-42b9-824a-6fc3b9c6df6c@canonical.com>
 <20220215125856.es2euyoqo6mp4y2t@pengutronix.de>
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Hello,

On Tue, Feb 15, 2022 at 01:58:56PM +0100, Uwe Kleine-K=F6nig wrote:
> On Tue, Feb 15, 2022 at 01:41:20PM +0100, Krzysztof Kozlowski wrote:
> > On 15/02/2022 11:49, Uwe Kleine-K=F6nig wrote:
> > > [... Something inserted a space in Subject lines ...]
> >=20
> > Other threads - not only mine - are also affected:
> > http://lists.infradead.org/pipermail/linux-arm-kernel/2022-February/714=
311.html
> > http://lists.infradead.org/pipermail/linux-arm-kernel/2022-February/714=
316.html
> > http://lists.infradead.org/pipermail/linux-arm-kernel/2022-February/714=
364.html
>=20
> In the meantime I'm confident that mailman2 is the culprit.

For the record: Using python2 (which is what mailman2 uses):

>>> from email.header import Header
>>> h =3D Header('[PATCH v2 08/15] dt-bindings: pwm: renesas,pwm: Include g=
eneric pwm schema', maxlinelen=3D76, header_name=3D'Subject')
>>> h.encode()
'[PATCH v2 08/15] dt-bindings: pwm: renesas,\n pwm: Include generic pwm sch=
ema'

This is the inner source of the problem, mailman just does something
like:

>>> import email
>>> a =3D email.message_from_file(open('message'))
>>> open('message-mangled', 'w').write(a.as_string())

So we just have to wait until all mailserver admins migrate away from
mailman2. I bet this will happen no later than when Python2 will become
EOL. :-\

Best regards
Uwe

--=20
Pengutronix e.K.                           | Uwe Kleine-K=F6nig            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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