From: Sebastian Gniazdowski <sgniazdowski@gmail.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: [PATCH] [[:blank:]] only matches on SPC and TAB
Date: Wed, 16 May 2018 06:18:25 +0200 [thread overview]
Message-ID: <CAKc7PVAYXTdeHjawSAfpPVDkB7AepYt=5w0pxH85g08Fbe1nHA@mail.gmail.com> (raw)
In-Reply-To: <20180515181212.GA13171@chaz.gmail.com>
On 15 May 2018 at 20:12, Stephane Chazelas <stephane.chazelas@gmail.com> wrote:
> Note that by some reading of the spec, and bash and yash have
> made such readings, when the spec says tokens are delimited by
> blanks, that's any blank in the locale.
>
> $ yash -c $'echo\u2006test'
> test
>
> In the case of bash, that only works "properly" with single-byte
> characters.
Doing some more or less bizarre coding, this allows to hide
information in the command line. Assuming script has access to full
command text (e.g. $jobtexts), it can check which argument is
prepended with e.g. non-breaking space(s), and which with regular
space(s). Zshell would behave as if there's no difference, while
script could decide on something, e.g. that nbs-prepended argument is
a fifo not a regular file, and some custom function show_jobs_status()
could show fifos in different color. Just doing deep-implications
survey, if e.g. SQL designers would do this properly, there wouldn't
be so many flavors of SQL today.
--
Best regards,
Sebastian Gniazdowski
next prev parent reply other threads:[~2018-05-16 4:18 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-13 21:25 Stephane Chazelas
2018-05-13 21:49 ` [PATCH v2] " Stephane Chazelas
2018-05-14 2:27 ` [PATCH] " Sebastian Gniazdowski
2018-05-14 4:41 ` Sebastian Gniazdowski
2018-05-14 6:36 ` Stephane Chazelas
2018-05-14 6:44 ` Stephane Chazelas
2018-05-14 8:47 ` Peter Stephenson
2018-05-14 12:34 ` Stephane Chazelas
2018-05-14 13:50 ` Peter Stephenson
2018-05-14 15:51 ` Stephane Chazelas
2018-05-14 16:31 ` Sebastian Gniazdowski
2018-05-14 16:50 ` Bart Schaefer
2018-05-14 19:52 ` Daniel Tameling
2018-05-14 20:42 ` Stephane Chazelas
2018-05-15 18:12 ` Stephane Chazelas
2018-05-16 4:18 ` Sebastian Gniazdowski [this message]
2018-05-15 19:06 ` Oliver Kiddle
2018-05-16 13:15 ` Stephane Chazelas
2018-05-16 13:40 ` Peter Stephenson
2018-05-16 16:31 ` Stephane Chazelas
2018-05-16 21:02 ` [PATCH v4] " Stephane Chazelas
2018-05-17 8:29 ` Peter Stephenson
2018-05-17 22:05 ` [PATCH] " Oliver Kiddle
2018-05-17 9:03 ` Sebastian Gniazdowski
2018-05-17 10:10 ` Sebastian Gniazdowski
2018-05-14 8:11 ` Sebastian Gniazdowski
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