From: fhml@herrmann-koenigsberg.de
To: <zsh-users@zsh.org>
Subject: RE: named jobs in RPROMPT
Date: Tue, 20 Sep 2011 01:42:56 +0200 [thread overview]
Message-ID: <25285513.300695.1316475776167.JavaMail.servlet@pustefix152.kundenserver.de> (raw)
Hey there.
> [...] and then set
>RPROMPT=$(jobfunction) But I get nothing, it seems jobstates is empty
>during prompt generation?
When you do >>PROMPT=$(code)<< then 'code' gets executed and the result is stored in PROMPT. Sometimes that is not what you want. What you probably want is >>PROMPT='$(code)'<<. See the little 's? Those prevent 'code' from being evaluated immediately. Now the code gets evaluated every time the PROMPT is shown.
A simple example where 'code' is 'date'. Lets say its currently 1970-01-01 00:00:00. When you enter >>PROMPT=$(date)<<, '$(date)' gets evaluated immediately, which is the same as if you typed >>PROMPT="1970-01-01 00:00:00"<<. Of course, that will never change. If you use 's, then '$(date)' gets stored in PROMPT - just as you typed it, not evaluated. Now every time PROMPT is evaluated '$(date)' gets evaluated which gives you a brand new date every time your PROMPT is updated.
Greetings :)
next reply other threads:[~2011-09-20 0:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-19 23:42 fhml [this message]
2011-09-20 7:27 ` Daniel
2011-09-20 19:04 ` Julien Jehannet
2011-09-25 17:39 ` Bart Schaefer
-- strict thread matches above, loose matches on Subject: below --
2011-09-18 14:48 Daniel
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