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From: Stephane Chazelas <stephane@chazelas.org>
To: Daniel Shahaf <d.s@daniel.shahaf.name>
Cc: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: sh emulation POSIX non-conformances (printf %10s and bytes vs character)
Date: Tue, 13 Apr 2021 19:03:49 +0100	[thread overview]
Message-ID: <20210413180349.bo4bbvro6dk634qg@chazelas.org> (raw)
In-Reply-To: <20210413155744.GS6819@tarpaulin.shahaf.local2>

2021-04-13 15:57:44 +0000, Daniel Shahaf:
> Stephane Chazelas wrote on Sun, Apr 11, 2021 at 20:42:05 +0100:
> > Another POSIX bug fixed by zsh (but which makes it non-compliant):
> > 
> > With multibyte characters:
> > 
> > $ printf '|%10s|\n' Stéphane Chazelas
> > |  Stéphane|
> > |  Chazelas|
> > 
> > POSIX requires:
> > 
> > | Stéphane|
> > |  Chazelas|
> > 
> > (with a UTF-8 é encoded one 2 bytes
> 
> Note that e-with-acute has two encodings in Unicode:
> 
> é, one codepoint, two UTF-8 bytes
> é, two codepoints, three UTF-8 bytes
> 
> https://en.wikipedia.org/wiki/Unicode_equivalence#Normal_forms

That was shown already in the part of my message you didn't
quote, where I pointed out how ksh93 addresses it with its %Ls
(zsh also has ${(ml[10])var} for that though).

See also:

https://unix.stackexchange.com/questions/350240/why-is-printf-shrinking-umlaut

Cheers,
Stephane


  reply	other threads:[~2021-04-13 18:04 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-10 23:31 [PATCH] Document imperfections in POSIX/sh compatibility dana
2021-04-10 23:50 ` Bart Schaefer
2021-04-11  0:19   ` dana
2021-04-11 16:54     ` Bart Schaefer
2021-04-11 17:57       ` sh emulation POSIX non-conformances (Was: [PATCH] Document imperfections in POSIX/sh compatibility) Stephane Chazelas
2021-04-11 18:13         ` Bart Schaefer
2021-04-11 19:18         ` sh emulation POSIX non-conformances (no word splitting upon arithmetic expansion) Stephane Chazelas
2021-04-22 15:03           ` Vincent Lefevre
2021-04-22 18:27             ` Bart Schaefer
2021-04-11 19:31         ` sh emulation POSIX non-conformances ("inf"/"Inf" in arithmetic expressions) Stephane Chazelas
2021-04-12 20:41           ` Bart Schaefer
2021-04-13  7:17             ` Stephane Chazelas
2021-04-22 15:31               ` Vincent Lefevre
2021-04-22 18:55                 ` Bart Schaefer
2021-04-22 20:45                   ` Daniel Shahaf
2021-04-22 21:25                     ` Bart Schaefer
2021-04-23 16:45                   ` Vincent Lefevre
2021-04-23 20:31                     ` Bart Schaefer
2021-04-23 22:46                       ` Oliver Kiddle
2021-04-23 23:34                         ` Bart Schaefer
2021-04-24  2:10                           ` Daniel Shahaf
2021-04-24  3:42                             ` Bart Schaefer
2021-04-24  7:33                               ` Stephane Chazelas
2021-04-24 16:04                                 ` Bart Schaefer
2021-04-24 23:02                         ` Vincent Lefevre
2021-04-25  2:18                           ` Bart Schaefer
2021-04-25 20:17                             ` Vincent Lefevre
2021-04-25 21:58                               ` Bart Schaefer
2021-04-26 10:28                                 ` Vincent Lefevre
2021-04-25 22:00                               ` Bart Schaefer
2021-04-26 10:34                                 ` Vincent Lefevre
2021-04-26 23:25                                   ` Vincent Lefevre
2021-04-11 19:33         ` sh emulation POSIX non-conformances (some of zsh's special variables) Stephane Chazelas
2021-04-11 19:42         ` sh emulation POSIX non-conformances (printf %10s and bytes vs character) Stephane Chazelas
2021-04-13 15:57           ` Daniel Shahaf
2021-04-13 18:03             ` Stephane Chazelas [this message]
2021-04-13 21:09               ` Bart Schaefer
2021-04-22 13:59           ` Vincent Lefevre
2021-04-22 14:28             ` Vincent Lefevre
2021-04-22 19:22             ` Bart Schaefer
2021-04-23 16:53               ` Vincent Lefevre
2021-04-23 23:01                 ` Oliver Kiddle
2021-04-24 21:41                   ` Vincent Lefevre
2021-04-24 21:46                   ` Vincent Lefevre
2021-04-24  7:09                 ` Stephane Chazelas
2021-04-24 21:52                   ` Vincent Lefevre
2021-04-24 22:28                     ` Bart Schaefer
2021-04-24 23:18                       ` Vincent Lefevre
2021-04-25  2:20                         ` Bart Schaefer
2021-04-25 11:07                           ` Vincent Lefevre
2021-04-11 23:04       ` [PATCH] Document imperfections in POSIX/sh compatibility dana
2021-04-13 16:01 ` Daniel Shahaf
2021-04-13 16:12   ` Peter Stephenson
2021-04-13 20:28   ` Oliver Kiddle
2021-04-13 21:40     ` dana
2021-04-13 22:02       ` Bart Schaefer
2021-04-14 12:38       ` Daniel Shahaf
2021-04-18  4:50         ` dana
2021-04-20 21:26           ` Daniel Shahaf
2021-05-03 23:42             ` dana

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