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

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Date:   Thu, 3 May 2018 17:05:46 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Ulf Magnusson <ulfalizer@...il.com>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [ANNOUNCE] Kconfiglib menuconfig implementation

On 05/03/2018 03:48 PM, Ulf Magnusson wrote:
> On Thu, May 3, 2018 at 10:28 PM, Randy Dunlap <rdunlap@...radead.org> wrote:
>> Hi,
>>
>> (with new kconfiglib.py and menuconfig.py)
>>
>> Thanks for the fixes.
>>
>> If I use "LC_CTYPE=C.UTF-8" then I get the down arrows in the bottom colored
>> bar.  Without that, I get an upside-down T (that is 193, 0xc1, line drawing
>> character in the IBM extended character set).
>>
>> Hm. With LC_CTYPE=C.UTF-8, the upper colored bar prints up arrows.
>> Without that, it prints ^^^^^^^^^^^^^^.
>> That's nice that it can do either.
> 
> The arrows use ACS_U/DARROW from the alternate character set. You get
> nice Unicode arrows for those with ncurses/PDCurses, plus "fallbacks"
> (strictly speaking the Unicode arrows are fallbacks too).

Too bad it doesn't use "vvvvvvvvvvvvvv" for the down-arrow fallbacks.
Instead of that funky IBM PC line drawing stub.

> Unicode text entry is still broken with LC_CTYPE=C, because ncurses
> respects it. Having the menuconfig just force C.UTF-8 if it's
> available might fix a bunch of problems in practice, even if it feels
> a bit iffy to force settings.
> 
> Python 3.7 will improve things at least. It converts LC_CTYPE=C into
> LC_CTYPE=<some available UTF-8 locale>.
> 
> Cleanest would be if all environments sanely defaulted to UTF-8, but
> that's not how it is in practice, unfortunately. :)

thanks,
-- 
~Randy