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From: Eli Schwartz <eschwartz@archlinux.org>
Newsgroups: gnu.bash.bug
Subject: Re: Unicode range and enumeration support.
Date: Wed, 18 Dec 2019 15:28:25 -0500
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Approved: bug-bash@gnu.org
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References: <568aeaaa-22b3-c7b9-0e18-a92bef6d2ffb@iki.fi> <5DF2FE31.9070406@tlinx.org> <0ff3a920-94c2-b0c9-5631-0964955657aa@archlinux.org> <5DF3D78B.4090208@tlinx.org> <20191213184213.GO851@eeg.ccf.org> <5DF4BDF0.6000402@tlinx.org> <20191216163906.GV851@eeg.ccf.org> <5DFA7AE2.2060504@tlinx.org> <20191218194651.GH851@eeg.ccf.org> <c1565d25-c4fc-ff50-4112-c38cee8d2f80@archlinux.org> <20191218201318.GI851@eeg.ccf.org> <b800439d-2fdd-45d9-871d-44346e5c3062@archlinux.org>
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On 12/18/19 3:13 PM, Greg Wooledge wrote:
> On Wed, Dec 18, 2019 at 03:08:20PM -0500, Eli Schwartz wrote:
>> So all bash needs to do to print {Z..a} is to take Z =3D=3D ASCII deci=
mal 90
>> and a =3D=3D ASCII decimal 97, then enumerate the numbers 90-97 and
>> translate them into ascii. No locale awareness is needed, no heuristic=
s,
>> no invocation of the locale subsystem, you don't even need to hardcode=

>> the ASCII range in source code.
>=20
> Until you want to use bash on an EBCDIC system. ;-)

Oof, that was mean. :p (Also, why does this still exist.)

(But I guess we all realize that this just means bash needs to rely on
the existing support for translating the ASCII locale, and still doesn't
need to enumerate a lookup code of characters for this especial purpose.)=


>> And that's why bash can support enumerating a range of ASCII character=
s
>> in LC_COLLATE=3DC order, when it cannot (easily) do so using other loc=
ales.
>=20
> Yup.
>=20


--=20
Eli Schwartz
Arch Linux Bug Wrangler and Trusted User


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