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Subject: Re: Need help with multibyte UTF-8 characters
To: cygwin AT cygwin DOT com
References: <626a3c06-e9f2-1932-f1f3-47ddb2051215 AT gmail DOT com> <b190e8bc-a60e-2a30-5caa-a2f67a0b91ce AT SystematicSw DOT ab DOT ca> <89a7d883-e3e5-42d7-2d22-020cdf6ccbdf AT towo DOT net> <8d811915-176f-c9f5-6500-364e494142f7 AT SystematicSw DOT ab DOT ca>
From: Thomas Wolff <towo AT towo DOT net>
Message-ID: <5d68998a-b278-668f-c547-6bc341147205@towo.net>
Date: Thu, 14 Dec 2017 09:55:35 +0100
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Am 14.12.2017 um 05:40 schrieb Brian Inglis:
> On 2017-12-13 00:50, Thomas Wolff wrote:
>> Am 13.12.2017 um 06:21 schrieb Brian Inglis:
>>> On 2017-12-04 18:23, Thomas Taylor wrote:
>>> Your Windows Regional settings and your mintty/Options/Text/Language and
>>> Character Set should be set to match.
>>> The profile commands below set Cygwin locale to your Windows Regional settings
>>> and charset to UTF-8, or Unix locale to your system locale.
>>> Otherwise your system or mintty is going to be doing conversions on each
>>> character.
>> I am not aware that mintty character display and Windows regional settings would
>> interfere in any way you indicated.
>> Can you elaborate on this please?
> Maybe I'm just too optimistic that software will DTRT to ensure that output is
> faithfully passed thru, or converted for the next layer of software, if it has
> different settings.
> I set all of my locales the same so characters should pass thru transparently
> and I can see output faithfully rendered, given adequate font configurations.
Mintty interfaces to Windows using the Unicode/UTF-16 API, so there is 
no dependency on the Windows system locale.
I assume the original poster's problem is a font issue, unless a test 
case would demonstrate anything else.
Thomas

> What happens when your system, terminal, and shell locales and charsets differ?
> Either some component/-s has/have to do conversion to provide readable output,
> which is my expectation given the requirement to specify locales and charsets,
> or you could end up with garbled output if nothing is doing any conversion.
> Does one override others to pass thru readable output, does conversion occur, or
> do you just see junk in some or all cases when locales and charsets differ?
>
> I am ignoring here the effect on text content, input and output formatting of
> selecting languages, territories, and scripts.

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