[perl #128995] Environment variables are not always propagated tosub-process

# New Ticket Created by  Cherio 
# Please include the string:  [perl #128995]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=128995 >


Environment variables with '.' (dot character) are not always passed to the
child process.
In the following example 'test.variable' will ne be available to the child
process when it starts:

$ENV{'test.variable'} = 'Hello kitty';
system("'/bin/program' 'arg1' 'arg2'");

However a slightly modified version of the same code works and
'test.variable' is available in the child program

$ENV{'test.variable'} = 'Hello kitty';
system('/bin/program', 'arg1', 'arg2');

This is a regression. It worked both ways in Perl 5.18

• [perl #128995] Environment variables are not always propagated tosub-process by Cherio
• Re: [perl #128995] Environment variables are not always propagatedto sub-process by Dave Mitchell
• Re: [perl #128995] Environment variables are not always propagatedto sub-process by Dennis Kaarsemaker
• Re: [perl #128995] Environment variables are not always propagatedto sub-process by Zefram