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Re: [STUMP] I cannot get the output of (ext:shell "ls ~") ?


From: Michael Raskin
Subject: Re: [STUMP] I cannot get the output of (ext:shell "ls ~") ?
Date: Tue, 16 Oct 2012 11:48:02 +0400

>When eval *standard-output*, it shows #<OUTPUT UNBUFFERED FILE-STREAM  
>CHARACTER #P"/dev/fd/1">. I have tried ext:run-program which cannot work  
>too.

The problem is whether writes go there directly or via *standard-output*

run-program could have :output keyword parameter to capture and redirect
output.

>在 Tue, 16 Oct 2012 15:19:45 +0800,Michael Raskin <address@hidden>  
>写道:
>
>>> The stumpwm is built using clisp-2.49. The stumpwm evaling can display  
>>> the
>>> result of the following function with the help of  
>>> "with-output-to-string":
>>> (Maybe i is better to hack stumpwm to do such a thing as clfswm does)
>>>
>>> (defun div618 (p1 p2)
>>>     (let ((ratio '(0. 0.191 0.236 0.382 0.5 0.618 0.809 1.))
>>>           (price #'(lambda (r) (if (<= p1 p2) (+ p1 (* (- p2 p1) r)) (-  
>>> p1
>>> (* (- p1 p2) r))))))
>>>         (with-output-to-string (*standard-output*)
>>>           (if (<= p1 p2)
>>>             (dolist (r (reverse ratio)) (format t "-------~3$
>>> ~$-------~%" r (funcall price r)))
>>>             (dolist (r ratio) (format t "-------~3$  ~$-------~%" r
>>> (funcall price r)))))))
>>>
>>> However, both slime and stumpwm evaling cannot display the result of
>>> (ext:shell "ls ~").
>>
>> ext:shell output goes to filedescriptor 1, not even to *standard-output*
>> and CLisp offers no way to redirect this. There are other way to call
>> external programs with more freedom.
>>
>>
>>
>
>
>-- 
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>






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