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Re: Coprocess terminated, pipe closed before I read the data out


From: Chet Ramey
Subject: Re: Coprocess terminated, pipe closed before I read the data out
Date: Thu, 14 Apr 2016 13:33:38 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.7.2

On 4/13/16 1:13 AM, George wrote:

> Users can work around this by duplicating the file descriptor:
> $ exec {fd_that_wont_vanish_on_me}<&${coproc[0]}-
> But it kind of negates the benefit of having coproc accept a name for
> the fd array if you just wind up having to re-bind it anyway. And the
> command could still fail if it's not run immediately after launching
> the coproc.
> 
> Thus, I think coproc shouldn't close its file descriptors or erase its
> environment variables.

This an interesting suggestion.  I will look at it for a future version.
You have to be careful with writing to a pipe where the reader has gone
away, though, since that will generate SIGPIPE.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/



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