From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: sh emulation POSIX non-conformances (printf %10s and bytes vs character)
Date: Thu, 22 Apr 2021 12:22:12 -0700 [thread overview]
Message-ID: <CAH+w=7Yc9-yKmjDTcMbY64Xg06guiTwJ0UQTo0u4Ad00DiN6VA@mail.gmail.com> (raw)
In-Reply-To: <20210422135934.GA154089@zira.vinc17.org>
On Thu, Apr 22, 2021 at 7:01 AM Vincent Lefevre <vincent@vinc17.net> wrote:
>
> > POSIX requires:
> >
> > | Stéphane|
> > | Chazelas|
>
> I would think that's intentional, at least for the precision
> (e.g. %.4s) in order to prevent buffer overflow.
That makes sense for C-ish languages, but I would think it was a bad
idea in general for the shell to allocate buffer sizes based on user
input.
Someone can probably point to the rationale document, but I'm guessing
this is really because of equivalence with sprintf() formats.
next prev parent reply other threads:[~2021-04-22 19:22 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
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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAH+w=7Yc9-yKmjDTcMbY64Xg06guiTwJ0UQTo0u4Ad00DiN6VA@mail.gmail.com' \
--to=schaefer@brasslantern.com \
--cc=zsh-workers@zsh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).