Re: [PATCH 1/4] treewide: convert ISO_8859-1 text comments to utf-8

From: Arnd Bergmann <arnd@arndb.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Joe Perches <joe@perches.com>,
	Samuel Ortiz <sameo@linux.intel.com>,
	"David S. Miller" <davem@davemloft.net>,
	Rob Herring <robh+dt@kernel.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Jonathan Cameron <jic23@kernel.org>,
	linux-wireless <linux-wireless@vger.kernel.org>,
	Networking <netdev@vger.kernel.org>,
	DTML <devicetree@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	"open list:HARDWARE RANDOM NUMBER GENERATOR CORE" 
	<linux-crypto@vger.kernel.org>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	linux-iio@vger.kernel.org,
	Linux PM list <linux-pm@vger.kernel.org>,
	lvs-devel@vger.kernel.org, netfilter-devel@vger.kernel.org,
	coreteam@netfilter.org
Subject: Re: [PATCH 1/4] treewide: convert ISO_8859-1 text comments to utf-8
Date: Wed, 25 Jul 2018 15:12:11 +0200	[thread overview]
Message-ID: <CAK8P3a3tOuP1FVS7oD1UhO5s4C+fLkL8VT3eCpRnSxBZxKzf6A@mail.gmail.com> (raw)
In-Reply-To: <20180724175531.75276cf4e539124aa9e27177@linux-foundation.org>

tools/perf/tests/.gitignore:
                            LLVM byte-codes, uncompressed
On Wed, Jul 25, 2018 at 2:55 AM, Andrew Morton
<akpm@linux-foundation.org> wrote:
> On Tue, 24 Jul 2018 17:13:20 -0700 Joe Perches <joe@perches.com> wrote:
>
>> On Tue, 2018-07-24 at 14:00 -0700, Andrew Morton wrote:
>> > On Tue, 24 Jul 2018 13:13:25 +0200 Arnd Bergmann <arnd@arndb.de> wrote:
>> > > Almost all files in the kernel are either plain text or UTF-8
>> > > encoded. A couple however are ISO_8859-1, usually just a few
>> > > characters in a C comments, for historic reasons.
>> > > This converts them all to UTF-8 for consistency.
>> []
>> > Will we be getting a checkpatch rule to keep things this way?
>>
>> How would that be done?
>
> I'm using this, seems to work.
>
>         if ! file $p | grep -q -P ", ASCII text|, UTF-8 Unicode text"
>         then
>                 echo $p: weird charset
>         fi

There are a couple of files that my version of 'find' incorrectly identified as
something completely different, like:

Documentation/devicetree/bindings/pinctrl/pinctrl-sx150x.txt:
            SemOne archive data
Documentation/devicetree/bindings/rtc/epson,rtc7301.txt:
            Microsoft Document Imaging Format
Documentation/filesystems/nfs/pnfs-block-server.txt:
            PPMN archive data
arch/arm/boot/dts/bcm283x-rpi-usb-host.dtsi:
        Sendmail frozen configuration  - version = "host";
Documentation/networking/segmentation-offloads.txt:
        StuffIt Deluxe Segment (data) : gmentation Offloads in the
Linux Networking Stack
arch/sparc/include/asm/visasm.h:                              SAS 7+
arch/xtensa/kernel/setup.c:                                         ,
init=0x454c, stat=0x090a, dev=0x2009, bas=0x2020
drivers/cpufreq/powernow-k8.c:
TI-XX Graphing Calculator (FLASH)
tools/testing/selftests/net/forwarding/tc_shblocks.sh:
                            Minix filesystem, V2 (big endian)
tools/perf/tests/.gitignore:
                            LLVM byte-codes, uncompressed

All of the above seem to be valid ASCII or UTF-8 files, so the check
above will lead
to false-positives, but it may be good enough as they are the
exception, and may be
bugs in 'file'.

Not sure if we need to worry about 'file' not being installed.

       Arnd