From: Philippe Troin <phil@fifi.org>
To: Aaron Davies <agdavi01@louisville.edu>
Cc: zsh-users@sunsite.dk
Subject: Re: Execute a Command in PS1 w/o Disturbing Previous Return Value?
Date: 12 Aug 2004 21:52:06 -0700 [thread overview]
Message-ID: <87y8kj1vyh.fsf@ceramic.fifi.org> (raw)
In-Reply-To: <D0F204E0-ECD9-11D8-83BE-000502631FBD@louisville.edu>
Aaron Davies <agdavi01@louisville.edu> writes:
> I'm trying to write a prompt that will do two things: include a file
> frequently re-downloaded from the web, and indicate the return status
> of the previous command. The problem is, if I cat out the file, it
> returns 0, overwriting the return status read by the %(0?%) directive,
> and guaranteeing that I will always get a prompt indicating
> success. What can I do about this?
>
> Here's the whole line. The breakdown is: current temperature, pwd, (if
> last command successful, a green smiley, else a red frowny), prompt
> char.
>
> export PS1='`cat /tmp/temperature`'" %m%~ %(0?."`echo
> '%{\e[1;32m%}:)%{\e[0m%}'`"."`echo \
> '%{\e[1;31m%}:(%{\e[0m%}'`") %# "
>
> (/tmp/temperature is refreshed every five minutes by a cron job, in
> case you were wondering.)
What about:
precmd() {
local r=$?
psvar=()
psvar=("$(< /tmp/temperature)")
(( $r )) && psvar=($psvar $r)
}
export PS1="$(print '%1v %m%~ %(2v,%{\e[1;31m%}:( [%2v]%{\e[0m%},%{\e[1;32m%}:%)%{\e[0m%}) %# ')"
I prefer "setopt printexitvalue" myself...
Phil.
next prev parent reply other threads:[~2004-08-13 4:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-13 3:35 Aaron Davies
2004-08-13 4:52 ` Philippe Troin [this message]
2004-08-13 17:32 ` Bart Schaefer
2004-08-14 16:07 ` Aaron Davies
2004-08-15 15:17 ` Phil!Gregory
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=87y8kj1vyh.fsf@ceramic.fifi.org \
--to=phil@fifi.org \
--cc=agdavi01@louisville.edu \
--cc=zsh-users@sunsite.dk \
/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).