Re: fn prompt and readline

Re: fn prompt and readline

[Chet Ramey]

> If i define...
> 
> fn prompt {echo -n $HOSTNAME^'$'}
> prompt=''
> 
> ...I get...
> 
> <machine>$
> 
> ...for prompt.
> The Problem:
> Using readline to step back in history, the prompt disappears after
> a few steps. Is this a bug in readline or rc? What can I do to avoid it?

readline is called as readline(prompt_string) so that moving backwards and
forwards in the history will end up redrawing the screen to look right.
In your case, readline is being called with a null prompt, so nothing is
printed.

(Forgive me, I don't know the rc syntax very well, but wouldn't this or
something like it work?
	p1=`{echo -n $HOSTNAME^'$'}
	p2=';'
	prompt=( $p1^' ' $p2^' ' )

I'd better quit before I get confused...)

Chet


--
``Teach them politics and war so their sons may study medicine and mathematics
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Chet Ramey, CWRU  Inet: chet@po.CWRU.Edu   NeXT Mail: chet@macbeth.INS.CWRU.Edu

Re: fn prompt and readline

[Palmer Davis]

[Chet]
>(Forgive me, I don't know the rc syntax very well, but wouldn't this or
>something like it work?

From my .rcrc, before I got sick of it and switched back to a bare semicolon:

#fn prompt { prompt=(`{whoami}^'@'`{hostname}^':'^`{pwd}^'; ' '' ); stty sane }

(It's "prompt", not "ps1"....)

Palmer Davis, CWRU INS Mac/UNIX Guy <davis@usenet.ins.cwru.edu>  Life is short.

fn prompt and readline

[d0asta]

If i define...

fn prompt {echo -n $HOSTNAME^'$'}
prompt=''

...I get...

<machine>$

...for prompt.
The Problem:
Using readline to step back in history, the prompt disappears after
a few steps. Is this a bug in readline or rc? What can I do to avoid it?

I haven't found this in 'rc-list', so hopefully it hasn't been
discussed yet (orelse flame me). :-)

Homann
-- 
	Magnus Homann			"The future is so bright,
	d0asta@dtek.chalmers.se		   you gotta wear shades..."