From: Stephane Chazelas <stephane@chazelas.org>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: tilde expansion after quoted : in assignments
Date: Fri, 30 Apr 2021 09:17:16 +0100 [thread overview]
Message-ID: <20210430081716.vlez4jbb7c72vorf@chazelas.org> (raw)
In-Reply-To: <20210430065123.zjq2mpanmtbkkgfl@chazelas.org>
2021-04-30 07:51:23 +0100, Stephane Chazelas:
[...]
> BTW, zsh is the only shell where ~ is expanded in:
>
> $ zsh -c 'a=a\:~; echo $a'
> a:/home/chazelas
[...]
That's a POSIX non-conformance btw:
https://pubs.opengroup.org/onlinepubs/9699919799.2018edition/utilities/V3_chap02.html#tag_18_06_01
Tilde expansion is only meant to be done after unquoted : per
POSIX. Though I can't imagine being a problem in practice. If
people don't want tilde expansion, they'd quote the ~, not the
:.
Also, there's a lot of variation between shells in how tilde
expansion is done and the specification is quite vague there.
See also ~$user or ~"user" or var=foo$COLON~ or var=foo${-+:}~
...
See also https://www.austingroupbugs.net/view.php?id=1172
(I had completely forgotten I'd raised that).
--
Stephane
next prev parent reply other threads:[~2021-04-30 8:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-29 23:53 Bug in Functions/Misc/regexp-replace Jacob Menke
2021-04-30 0:40 ` Matthew Martin
2021-04-30 5:56 ` Stephane Chazelas
2021-04-30 6:51 ` Stephane Chazelas
2021-04-30 8:17 ` Stephane Chazelas [this message]
2021-04-30 17:43 ` tilde expansion after quoted : in assignments Bart Schaefer
2021-04-30 20:13 ` Bug in Functions/Misc/regexp-replace Jacob Menke
2021-04-30 21:22 ` Bart Schaefer
2021-04-30 20:43 ` Bart Schaefer
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