From: Mikael Magnusson <mikachu@gmail.com>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: zsh workers <zsh-workers@zsh.org>
Subject: Re: Bug in alias expansion
Date: Mon, 16 Nov 2015 01:50:42 +0100 [thread overview]
Message-ID: <CAHYJk3Rw2PaVXzf9-E627o_Gxv15cKtnNGAKJnjwmdw-SWxDgA@mail.gmail.com> (raw)
In-Reply-To: <151115144805.ZM20614@torch.brasslantern.com>
On Sun, Nov 15, 2015 at 11:48 PM, Bart Schaefer
<schaefer@brasslantern.com> wrote:
> On Nov 15, 8:03pm, Peter Stephenson wrote:
> }
> } I don't know why this works in other contexts.
>
> Addendum: To some extent it does not.
>
> torch% alias foo='echo x)$(:'
> torch% print $(foo)
> zsh: command not found: fooecho
>
> This should of course expand to
>
> print $( echo x)$(: )
>
> which is perfectly valid and definitely should not produce "fooecho",
> so the backtracking is still messed up somewhere and parse_subscript()
> is potentially a red herring.
>
> In older versions of zsh it gagged in a different way:
>
> % alias -g foo='echo x)$(:'
> % print $(foo)
> zsh: parse error near `)'
> zsh: parse error in command substitution
This error is definitely what I would expect from the above command.
It's expanded in the subshell¹, so it shouldn't possibly be able to
affect the syntax of the parent shell.
¹
% alias -g foo=bar
% echo $(foo)
zsh: command not found: bar
% unalias \foo; foo; echo $(foo)
zsh: command not found: bar
zsh: command not found: foo
--
Mikael Magnusson
next prev parent reply other threads:[~2015-11-16 0:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-13 18:03 Kynn Jones
2015-11-14 1:03 ` Bart Schaefer
2015-11-14 18:57 ` Kynn Jones
2015-11-14 19:03 ` Bart Schaefer
2015-11-14 19:19 ` Kynn Jones
2015-11-14 21:40 ` Bart Schaefer
2015-11-14 22:20 ` Kynn Jones
2015-11-15 20:03 ` Peter Stephenson
2015-11-15 21:52 ` Bart Schaefer
2015-11-15 22:26 ` Bart Schaefer
2015-11-15 22:48 ` Bart Schaefer
2015-11-16 0:50 ` Mikael Magnusson [this message]
2015-11-16 3:24 ` Bart Schaefer
2015-11-16 5:42 ` Mikael Magnusson
2015-11-18 10:42 ` Peter Stephenson
2015-11-18 14:13 ` Peter Stephenson
2015-11-18 15:52 ` Bart Schaefer
2015-11-18 16:14 ` Peter Stephenson
2015-11-18 18:09 ` Bart Schaefer
2015-11-17 17:29 ` Peter Stephenson
2015-11-18 4:55 ` Bart Schaefer
2015-11-18 10:30 ` Peter Stephenson
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