Redirecting guile's output to more/less

Redirecting guile's output to more/less

[Brett Viren]

Hello again,

I have a C library which has functions that print to stdout, sometimes
filling several screens.  I would like to somehow redirect this output
temporarily to whatever is in the PAGER env. var.  After the PAGER
quits, then regular interactive guile output should continue to go to
stdout.  

Is it possible?

-Brett.

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Re: Redirecting guile's output to more/less

[Christopher Cramer]

On Mon, Mar 25, 2002 at 05:08:37PM -0500, Brett Viren wrote:
> I have a C library which has functions that print to stdout, sometimes
> filling several screens.  I would like to somehow redirect this output
> temporarily to whatever is in the PAGER env. var.  After the PAGER
> quits, then regular interactive guile output should continue to go to
> stdout.  
> 
> Is it possible?

It's possible. What you would do is, dup stdout, open a pipe to less,
dup2 it to stdout, wait for less to exit, dup2 the old stdout back.

The default output port for Guile doesn't necessarily have to be stdout,
by the way.

-- 
Christopher Cramer <crayc@pyro.net> <http://www.pyro.net/~crayc/>
Quoi que vous fassiez, écrasez l'infâme, et aimez qui vous aime.
	-- Voltaire

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