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Subject:	diagnostic character info (Re: [ANNOUNCEMENT] Updated: mintty 2.7.4)
To:	cygwin AT cygwin DOT com
References:	<announce DOT 245a59b4-c8dd-31c0-8f79-3b1c8e28a139 AT towo DOT net> <87vasqrl2a DOT fsf AT Rainer DOT invalid> <c377cada-562c-9a5d-14c3-b1f0b204abd5 AT towo DOT net> <25e79ef3-c0ca-2d9f-7353-413580222412 AT SystematicSw DOT ab DOT ca> <52fb66c3-5dc5-afd7-02bf-acdb0a2a9972 AT towo DOT net> <bba687bb-b724-a7d2-2608-3bdc3af772ff AT SystematicSw DOT ab DOT ca>
From:	Thomas Wolff <towo AT towo DOT net>
Message-ID:	<d80172a0-33d0-ef5e-f9db-35ccfeb47d2a@towo.net>
Date:	Tue, 7 Feb 2017 22:00:25 +0100
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Am 07.02.2017 um 08:30 schrieb Brian Inglis:
> On 2017-02-06 12:46, Thomas Wolff wrote:
>> Am 05.02.2017 um 21:36 schrieb Brian Inglis:
>>> It may also be useful if mintty had some character hex value box
>>> display mode switch to display the actual codes at each visual
>>> position, or maybe a font used to display the character hex value in
>>> a box, often used in fonts as glyphs for non-printing control
>>> characters and those in the Private Use Area, in which case that could
>>> perhaps be added to the mintty package for use in testing.
>>> I have been searching for such a font with no success so far.
>> Hmm, ... it might be a nice feature.
> Displaying the character set codes passed to the console.
I'm preparing such an option. However, I plan to indicate the actual 
Unicode characters effective on the cursor position (i.e. not the 
multi-byte encoded characters).

> ...
> . Unicode BMP Fallback Font displays each character in the BMP as hex
> within a square box:
I don't see much purpose in using such a font because you won't easily 
recognise your actual text anymore.
But if you want that for debugging, there's no specific mintty support 
necessary for it.

Cheers
Thomas

> http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=UnicodeBMPFallbackFont
>
> . Unicode Last Resort font developed for Unicode on behalf of Apple
> displays the same representative glyph indicating its type within a
> thick rounded box for all characters of the same class or script; in
> large sizes the character type and range are visible within the box
> edges:
>
> http://unicode.org/policies/lastresortfont_eula.html
>
> . GNU Unifont provides low quality bitmapped style 8x16 or 16x16 fallback
> glyphs for all BMP characters and are working on increasing SMP support:
>
> https://savannah.gnu.org/projects/unifont
>
> Those interested can download, install, and check these out in Windows
> Charmap, using Group by Unicode Subrange, to see what they provide and
> how they could be used for diagnostic fallback.

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