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From: Neil Jerram <neil@ossau.uklinux.net>
Cc: guile-user@gnu.org
Subject: Re: Setting the readline prompt ...
Date: 08 Jan 2003 21:11:17 +0000	[thread overview]
Message-ID: <m3bs2rfitm.fsf@laruns.ossau.uklinux.net> (raw)
In-Reply-To: <m3of6rikkh.fsf@multivac.cwru.edu>

>>>>> "Paul" == Paul Jarc <prj@po.cwru.edu> writes:

    Paul> rm@fabula.de wrote:
    >> just a quick question: how can i change the readline
    >> prompt (after readline is activated).
    >> I found (set-readline-prompt! prompt . prompt2) in
    >> 'ice-9 readline'

    Paul> AFAICT, set-readline-prompt! has no visible effect either in .guile or
    Paul> in the REPL.

It's a tricky business, prompting.

You can see the effect of set-readline-prompt! like this:

guile> (begin (set-readline-prompt! "1> " "2> ") (readline))
1> something
"something"
guile> (begin (set-readline-prompt! "1> " "2> ") (read))
2> something
something

The second case uses the secondary (continuation) prompt because the
(read) began by reading the trailing whitespace at the end of the
`(begin ...)' line.

So, in programs, you can use set-readline-prompt! to set whatever
prompt you like before reading some data.  It doesn't appear to work
at the REPL because the REPL itself does a set-readline-prompt! to set
the prompt to whatever was specified by the last set-repl-prompt!.

        Neil



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  reply	other threads:[~2003-01-08 21:11 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-07 18:42 Setting the readline prompt rm
2003-01-08 18:04 ` Paul Jarc
2003-01-08 21:11   ` Neil Jerram [this message]
2003-01-08 21:35     ` Neil Jerram
2003-01-08 21:47       ` Marius Vollmer
2003-01-08 23:52         ` Neil Jerram

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