[Ecls-list] run-program with :error :stream?

Pascal J. Bourguignon pjb at informatimago.com
Tue Jan 20 01:07:02 UTC 2015

> On 20 Jan 2015, at 01:48, Jared C. Davis <jared.c.davis at gmail.com> wrote:
> Hi,
> I'm new to ECL.  I have some questions about the ext:run-program.
> According to the documentation at:
>    http://ecls.sourceforge.net/new-manual/rn01re63.html <http://ecls.sourceforge.net/new-manual/rn01re63.html>
> It sounds as though run-program can take :error :stream.  However, when I try
> to run:
>    (ext:run-program "echo" (list "hello")
>                     :input :stream
>                     :output :stream
>             :error :stream)
> I seem to hit an error:
>    Debugger received error of type: SIMPLE-ERROR
>    Invalid :ERROR argument to EXT:RUN-PROGRAM:
>    :STREAM
> Is there some other command I should use besides ext:run-program that might
> allow me to get all three stdin/out/err streams?
> I'm using x86-64 Linux with the ECL 13.5.1 release from the sourceforge project
> page.  Perhaps I should use a newer version of ECL from Git?

If you type M-. on ext:run-program, you will see in the source of the function, and that the error parameter can be T or :OUTPUT, not :STREAM.

(I've got ecl from git, commit d1725e193059e98567d3c7dababf4643a9a347b8).
__Pascal J. Bourguignon__

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