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Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary?

From Paavo Helde <eesnimi@osa.pri.ee>
Newsgroups comp.lang.c++
Subject Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary?
Date 2024-11-29 00:59 +0200
Organization A noiseless patient Spider
Message-ID <viask1$o2bs$1@dont-email.me> (permalink)
References (20 earlier) <vi99eq$fb2o$1@dont-email.me> <vi9ilo$givc$1@dont-email.me> <20241128151943.000035ec@yahoo.com> <viaki7$mp6p$1@dont-email.me> <20241129002148.00002e56@yahoo.com>

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On 29.11.2024 00:21, Michael S wrote:
> On Thu, 28 Nov 2024 22:41:42 +0200
> Paavo Helde <eesnimi@osa.pri.ee> wrote:
> 
>> On 28.11.2024 15:19, Michael S wrote:
>>> On Thu, 28 Nov 2024 13:03:20 +0200
>>> Paavo Helde <eesnimi@osa.pri.ee> wrote:
>>>    
>>>> On 28.11.2024 10:26, Muttley@DastardlyHQ.org wrote:
>>>>> On Wed, 27 Nov 2024 14:58:18 -0500
>>>>> James Kuyper <jameskuyper@alumni.caltech.edu> wibbled:
>>>>>> On 11/27/24 11:12, Muttley@DastardlyHQ.org wrote:
>>>>>>> On Wed, 27 Nov 2024 17:24:05 +0200
>>>>>>> Michael S <already5chosen@yahoo.com> wibbled:
>>>>>> ....
>>>>>>>> It works, but badly rather than fine.
>>>>>>>> Specifically, it works only with ASCII paths. Which, on
>>>>>>>> Windows, happen to be 2nd class. The biggest problem with
>>>>>>>> ASCII paths on Windows is
>>>>>>>
>>>>>>> How can ascii paths be 2nd class (whatever that means) given
>>>>>>> that ascii is a subset of utf-8?
>>>>>>
>>>>>> Because ascii is a subset of utf-8, any path name that contains a
>>>>>> character not in that subset cannot be represented, which is what
>>>>>> makes them 2nd class.
>>>>>
>>>>> Huh? Any ascii text is valid in UTF-8, that doesn't make ascii 2nd
>>>>> class. The only issue comes when some idiot tries to mix utf-8
>>>>> with 8 bit ascii code pages.
>>>>
>>>> You are right, ASCII is not 2nd class because it is part of UTF-8.
>>>> It is 2nd class on Windows because MS have historically decided to
>>>> not support UTF-8 properly on Windows, in an attempt of a futile
>>>> vendor lock-in.
>>>>   
>>>
>>> Not sure that it was about lock in. At time Win32 was conceived,
>>> UTF8 didn't exist. At time WinNt was shipped, it still was less
>>> than a year old. Back then choosing UTF16 looked reasonable.
>>> Up to ~15 years ago it was not clear that UTF8 not just won, but won
>>> decisively, so siting on the fence, waiting for the outcome of the
>>> battle and rooting for legacy was not totally unreasonable. For what
>>> happened after that, you could not underestimated a factor of
>>> laziness.
>>>> Though this is changing now, I just ran a quick test and apparently
>>>> calling setlocale(LC_ALL, "et_EE.UTF-8") now works properly with
>>>> VS2022 on Windows 10 and I can pass UTF-8 filenames to
>>>> narrow-string fopen() and they work properly. So there is progress!
>>>>   
>>>
>>> Can you try it with paths that are longer than 260 characters? Both
>>> prefixed with "\\?\" and non-prefixed?
>>>    
>>
>> Non-prefixed, _mkdir() succeeds with a path of 247 unicode characters
>> (406 bytes) and fails with 307 unicode chars (506 bytes).
>>
>> Prefixed with "\\?\" _mkdir() and fopen() appeared to work fine,
>> tried up to 1275 unicode chars (2114 bytes), the largest path was:
>>
>> \\?\C:\Tmp\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää\jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää.txt
>>
>>
>>
>>
>> Alas, the File Explorer left-hand tree failed to descend into so deep
>> directory tree (double-click in right-hand pane worked, but left-hand
>> tree was truncated at some point). When opened in Notepad or
>> Notepad++, the too long paths were changed into tilde-style "short
>> names", stripping the unicode chars:
>>
>> C:\tmp\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1\JAP-ES~1.TXT
>>
>>
>>
> 
> 
> Prefixed Unicode is expected to work fine. Documentation is clear about
> it. I was wondering about behavior of prefixed ASCII. I.e. fopen() with
> default locale.

With default locale it did not work on my machine (i.e. produced 
gibberish filenames instead of expected Unicode characters), e.g. 
jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää-jap漢漢漢-estüüää

However, after

setlocale(LC_ALL, ".UTF-8");

the narrow character _mkdir() and fopen() started to work fine.

If you can set your Windows ACP to UTF-8, then the default locale ought 
to work as well I guess. I think last time I tried this the machine did 
not boot up any more. But this was many years ago.

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Is EXIT_SUCCESS/EXIT_FAILURE necessary? wij <wyniijj5@gmail.com> - 2024-11-20 11:02 +0800
  Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Paavo Helde <eesnimi@osa.pri.ee> - 2024-11-20 09:22 +0200
    Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastartdlyHQ.org - 2024-11-20 08:27 +0000
      Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-20 13:47 +0000
        Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastartdlyHQ.org - 2024-11-20 15:05 +0000
          Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-20 15:45 +0000
            Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastartdlyHQ.org - 2024-11-20 16:41 +0000
    Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-11-20 13:37 -0800
      Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-20 22:11 +0000
        Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-11-20 14:33 -0800
          Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-20 23:03 +0000
            Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-11-20 15:57 -0800
          Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-11-20 15:58 -0800
            Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-21 13:43 +0000
              Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastartdlyHQ.org - 2024-11-21 16:07 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-21 17:55 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? David Brown <david.brown@hesbynett.no> - 2024-11-22 09:30 +0100
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-11-22 11:10 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@dastardlyhq.com - 2024-11-23 11:36 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-11-22 12:26 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-11-22 12:49 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-22 23:26 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? David Brown <david.brown@hesbynett.no> - 2024-11-23 13:07 +0100
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-11-25 13:55 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-12-01 20:57 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastartdlyHQ.org - 2024-11-22 09:55 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-11-26 04:21 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-22 11:57 -0500
              Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-22 11:31 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-11-22 12:36 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-22 16:53 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? wij <wyniijj5@gmail.com> - 2024-11-24 12:57 +0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-11-25 14:03 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? wij <wyniijj5@gmail.com> - 2024-11-26 12:21 +0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? wij <wyniijj5@gmail.com> - 2024-11-27 16:23 +0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastartdlyHQ.org - 2024-11-27 08:26 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? wij <wyniijj5@gmail.com> - 2024-11-27 18:48 +0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Paavo Helde <eesnimi@osa.pri.ee> - 2024-11-27 15:39 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastardlyHQ.org - 2024-11-27 13:54 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-27 17:24 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastardlyHQ.org - 2024-11-27 16:12 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Richard Damon <richard@damon-family.org> - 2024-11-27 13:00 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastardlyHQ.org - 2024-11-28 08:23 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-28 15:06 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Richard Damon <richard@damon-family.org> - 2024-11-28 08:08 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-27 14:58 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-11-27 19:46 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastardlyHQ.org - 2024-11-28 08:26 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Paavo Helde <eesnimi@osa.pri.ee> - 2024-11-28 13:03 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Ralf Fassel <ralfixx@gmx.de> - 2024-11-28 12:15 +0100
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Paavo Helde <eesnimi@osa.pri.ee> - 2024-11-28 13:36 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Ralf Fassel <ralfixx@gmx.de> - 2024-11-28 14:12 +0100
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Richard Damon <richard@damon-family.org> - 2024-11-28 07:50 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-28 15:19 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastardlyHQ.org - 2024-11-28 15:12 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-28 17:36 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? David Brown <david.brown@hesbynett.no> - 2024-11-28 16:43 +0100
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastardlyHQ.org - 2024-11-28 15:59 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-11-28 10:19 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Paavo Helde <eesnimi@osa.pri.ee> - 2024-11-28 22:41 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-29 00:21 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Paavo Helde <eesnimi@osa.pri.ee> - 2024-11-29 00:59 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-29 01:20 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-28 17:18 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Paavo Helde <eesnimi@osa.pri.ee> - 2024-11-27 19:01 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastardlyHQ.org - 2024-11-28 08:22 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-11-27 11:00 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-27 14:57 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Muttley@DastardlyHQ.org - 2024-11-27 13:52 +0000
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-27 14:54 -0500
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-28 15:27 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-27 15:30 +0200
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-11-28 18:32 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-11-25 14:00 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-11-25 14:15 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-12-01 21:00 -0800
                Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-11-26 04:26 -0800
          Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-20 23:20 -0500
        Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-11-20 17:32 -0800
          Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? red floyd <no.spam.here@its.invalid> - 2024-11-20 22:56 -0800
            Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-21 13:52 +0000
          Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-21 13:51 +0000
  Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-20 13:44 +0000
    Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? wij <wyniijj5@gmail.com> - 2024-11-20 22:57 +0800
      Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Michael S <already5chosen@yahoo.com> - 2024-11-20 17:23 +0200
  Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-11-20 23:09 -0500
    Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? scott@slp53.sl.home (Scott Lurndal) - 2024-11-21 13:52 +0000
    Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? wij <wyniijj5@gmail.com> - 2024-11-21 22:45 +0800
  Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Rosario19 <Ros@invalid.invalid> - 2024-11-25 22:20 +0100
    Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? "Fred. Zwarts" <F.Zwarts@HetNet.nl> - 2024-11-26 10:20 +0100
      Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Rosario19 <Ros@invalid.invalid> - 2024-11-30 16:52 +0100
  Re: Is EXIT_SUCCESS/EXIT_FAILURE necessary? Andrey Tarasevich <noone@noone.net> - 2025-02-15 16:21 -0800

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