[Bug 1608268] [NEW] exported bash functions cannot be executed from perl

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This fails when using the perl version distributed with Ubuntu 16.04.1
LTS:

    myfunc() { echo OK $*; }
    export -f myfunc
    seq 3 | perl `which parallel` myfunc

giving:

    /bin/bash: myfunc: command not found
    /bin/bash: myfunc: command not found
    /bin/bash: myfunc: command not found

(parallel = GNU Parallel)

This fails when using the perl version distributed with Ubuntu 16.04.1
LTS:

    myfunc() { echo OK $*; }
    export -f myfunc
    perl `which parallel` myfunc ::: 1 2 3

giving:

    OK 1  (Surprisingly it works for the first job!?!)
    /bin/bash: myfunc: command not found
    /bin/bash: myfunc: command not found

It works as expected on the perl version distributed with Ubuntu 14.04.4 LTS,
Debian 7.8, Redhat 9, Centos 5, MacOS X.

I downloaded and compiled the pristine source for
perl-5.18.4  perl-5.20.3  perl-5.22.2  perl-5.24.0
on Ubuntu 16.04.1 LTS. Then this works:

    myfunc() { echo OK $*; }
    export -f myfunc
    seq 3 | PERL5LIB=lib ./perl `which parallel` myfunc
    PERL5LIB=lib ./perl `which parallel` myfunc ::: 1 2 3

All of this leads me to believe that a bug has been introduced in the
58 patches.

Failing perl version:

    $ perl --version

    This is perl 5, version 22, subversion 1 (v5.22.1) built for x86_64-linux-gnu-thread-multi
    (with 58 registered patches, see perl -V for more detail)

** Affects: perl (Ubuntu)
     Importance: Undecided
         Status: New

-- 
exported bash functions cannot be executed from perl
https://bugs.launchpad.net/bugs/1608268
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