linux-kernel - Re: [ANNOUNCE] Kconfiglib menuconfig implementation

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Message-ID: <20180514165844.GD27984@xo-6d-61-c0.localdomain>
Date:   Mon, 14 May 2018 18:58:44 +0200
From:   Pavel Machek <pavel@....cz>
To:     Ulf Magnusson <ulfalizer@...il.com>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [ANNOUNCE] Kconfiglib menuconfig implementation

Hi!

> > config CAN_PEAK_PCIEFD
> >         depends on PCI
> >         tristate "PEAK-System PCAN-PCIe FD cards"
> >         ---help---
> >           This driver adds support for the PEAK-System PCI Express FD
> >           CAN-FD cards family.
> >           These 1x or 2x CAN-FD channels cards offer CAN 2.0 a/b as well as
> >           CAN-FD access to the CAN bus. Besides the nominal bitrate of up to
> >           1 Mbit/s, the data bytes of CAN-FD frames can be transmitted with
> >           up to 12 Mbit/s. A galvanic isolation of the CAN ports protects the
> >           electronics of the card and the respective computer against
> >           disturbances of up to 500 Volts. The PCAN-PCI Express FD can be
> >           operated with ambient temperatures in a range of -40 to +85 °C.
> >
> >
> > kconfiglib.KconfigSyntaxError:
> > Malformed ascii in drivers/net/can/peak_canfd/Kconfig
> > Context: b't temperatures in a range of -40 to +85 \xc2\xb0C.\n'
> > Problematic data: b'\xc2'
> > Reason: ordinal not in range(128)
> >
> >
> > thanks,
> > --
> > ~Randy
> 
> Thanks for trying it out!
> 
> You're probably running in the C locale, which implies an ASCII
> encoding. That has caused enough trouble that the Python devs decided
> to automatically convert it to UTF-8 in Python 3.7:
> https://www.python.org/dev/peps/pep-0538/. LC_CTYPE=C.UTF-8 should fix
> it.
> 
> It's a bit silly to have it crash for something like that though. I
> could force UTF-8 instead of respecting the locale (though it feels
> neater to respect settings), or tell Python to ignore decoding errors.
> Should probably do something at least...

Well, Kconfig files are utf-8, as is the rest of kernel.

So yes, you should respect $LC_CTYPE for display etc, but you should always
assume Kconfig files are utf-8... and that does not need to be optional.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html