From: arisawa <arisawa@ar.aichi-u.ac.jp>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] rc: null list in concatenation
Date: Tue, 25 Nov 2014 17:30:17 +0900 [thread overview]
Message-ID: <DAFEF014-D6DE-4A57-BB09-DAF335018E5C@ar.aichi-u.ac.jp> (raw)
In-Reply-To: <81c18ae059da79eb550d650650fa88c4@india.com>
> 2014/11/25 15:56、trebol@india.com のメール：
>
> a = `{ls file}^test; echo 'this part is not executed if file doesn''t exist'
probably your question is as follows:
maia% a = `{ls file}^test; echo 'this part is not executed if file doesn''t exist'
ls: file: 'file' directory entry not found
rc: null list in concatenation
maia%
on the other hand,
maia% ls file; echo 'this part is not executed if file doesn''t exist'
ls: file: 'file' directory entry not found
this part is not executed if file doesn't exist
maia%
a similar thing is:
maia% (aa bb)=aaaa; echo bbbb
rc: variable name not singleton!
maia%
perhaps this is a feature.
rc stops execution if there is an error in grammar.
next prev parent reply other threads:[~2014-11-25 8:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-25 4:24 trebol
2014-11-25 6:08 ` arisawa
2014-11-25 6:56 ` trebol
2014-11-25 8:30 ` arisawa [this message]
2014-11-25 10:00 ` Charles Forsyth
2014-11-25 19:37 ` trebol
[not found] <fef8ab0af3b38f58c82f797482943532@india.com>
2014-11-25 20:44 ` trebol
2014-11-25 20:47 ` trebol
2014-11-26 6:34 trebol
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=DAFEF014-D6DE-4A57-BB09-DAF335018E5C@ar.aichi-u.ac.jp \
--to=arisawa@ar.aichi-u.ac.jp \
--cc=9fans@9fans.net \
/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.
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).