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From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: Zach Riggle <zachriggle@gmail.com>
Cc: "Lawrence Velázquez" <larryv@zsh.org>, "Zsh Users" <zsh-users@zsh.org>
Subject: Re: Odd behavior with various (q) array modifiers and non-printable characters (backspace, newline)
Date: Thu, 21 Oct 2021 14:24:08 +0000	[thread overview]
Message-ID: <20211021142408.GB16034@tarpaulin.shahaf.local2> (raw)
In-Reply-To: <CAMP9c5kLJnSzowD9hNo2LQOnVKqDhQ1=3Zy=wfYeb5iEAn+5yw@mail.gmail.com>

Zach Riggle wrote on Tue, Oct 19, 2021 at 14:17:48 -0500:
> Apologies for resurrecting this thread, but I wanted to revisit and thank
> everybody for the help.
> 
> I ran into some issues where my
> print-a-$-and-then-the-minally-quoted-version-of-this-array-of-scalars when
> dealing with regex, due to "builtin echo" treating '\bfoo bar\b'
> incorrectly.
> 

Why, does it output «\b» literally (two printable characters)?  It
should emit backspaces (ASCII 0x08).

> I attempted a variety of things to fix the problem, but going back through
> this thread really helped a bunch.  I had written additional code that
> relied in builtin echo.  "command echo" and the issue is resolved.
> 

echo(1)'s semantics aren't portable.  Use printf(1) for portable sh code
or the builtin «print» for portable zsh code.

Daniel


  reply	other threads:[~2021-10-21 14:25 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-11 20:29 Zach Riggle
2021-08-11 21:16 ` Bart Schaefer
2021-08-11 21:42   ` Lawrence Velázquez
2021-08-11 23:25     ` Zach Riggle
2021-08-12  0:22       ` Bart Schaefer
2021-08-12  0:34         ` Lawrence Velázquez
2021-08-12 13:34         ` Ray Andrews
2021-08-12  0:36       ` Lawrence Velázquez
2021-08-14 15:52     ` Daniel Shahaf
2021-10-19 19:17       ` Zach Riggle
2021-10-21 14:24         ` Daniel Shahaf [this message]
2021-10-21 15:23           ` Bart Schaefer
2021-08-11 21:27 ` Bart Schaefer

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