From: Ray Andrews <rayandrews@eastlink.ca>
To: Kurtis Rader <krader@skepticism.us>
Cc: "Lawrence Velázquez" <vq@larryv.me>, "Zsh Users" <zsh-users@zsh.org>
Subject: Re: The "-" and "--" options (was Re: ${var:1:1:=y})
Date: Wed, 04 Feb 2015 18:03:12 -0800 [thread overview]
Message-ID: <54D2CF60.2000807@eastlink.ca> (raw)
In-Reply-To: <CABx2=D_iJPpNbpj1N4CfpxVMm6ouaQDdAyK2=CpwD-m760ay=A@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 984 bytes --]
On 02/04/2015 05:52 PM, Kurtis Rader wrote:
> On Wed, Feb 4, 2015 at 5:31 PM, Ray Andrews <rayandrews@eastlink.ca
> <mailto:rayandrews@eastlink.ca>> wrote:
>
> On 02/04/2015 03:47 PM, Lawrence Velázquez wrote:
>
> % echo - -
>
> Ok, the first hyphen gets eaten, and the next one is literal.
> Still, shouldn't
> single quotes make anything inside them literal?
>
>
> The single-quotes simply inhibit the shell from performing any
> substitutions (e.g., of $var references) inside the quoted string. The
> quotes also inhibit splitting the string on $IFS boundaries; i.e., the
> shell will pass the resulting string as a single argument to the
> command. The echo command simply gets a hyphen whether or not you
> quoted it. The echo command has no way of knowing that it was
> originally enclosed in single-quotes.
Of course. I get fuzzified about the handoff from the shell to external
commands. A bonk on the head and all is clear. Never again.
next prev parent reply other threads:[~2015-02-05 2:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-03 23:12 ${var:1:1:=y} Ray Andrews
2015-02-04 0:18 ` ${var:1:1:=y} Lawrence Velázquez
2015-02-04 0:39 ` ${var:1:1:=y} Ray Andrews
2015-02-04 1:30 ` ${var:1:1:=y} Lawrence Velázquez
2015-02-04 3:25 ` ${var:1:1:=y} Bart Schaefer
2015-02-04 3:44 ` ${var:1:1:=y} Eric Cook
2015-02-04 17:10 ` The "-" and "--" options (was Re: ${var:1:1:=y}) Bart Schaefer
2015-02-04 17:42 ` Ray Andrews
2015-02-04 23:47 ` Lawrence Velázquez
2015-02-05 1:31 ` Ray Andrews
2015-02-05 1:52 ` Kurtis Rader
2015-02-05 2:03 ` Ray Andrews [this message]
2015-02-05 2:24 ` Bart Schaefer
2015-02-04 19:02 ` Peter Stephenson
2015-02-04 19:53 ` ZyX
2015-02-04 5:16 ` ${var:1:1:=y} Ray Andrews
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=54D2CF60.2000807@eastlink.ca \
--to=rayandrews@eastlink.ca \
--cc=krader@skepticism.us \
--cc=vq@larryv.me \
--cc=zsh-users@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).