From lumimies@gmail.com

qx{} captures stderr as well as stdout, which it shouldn't be doing.

In p5​:
$ perl -E 'my $a = qx{echo woot 1>&2 }; say "|||$a|||"'
woot
||||||

In rakudo​:
$ perl6 -e 'my $a = qx{echo woot 1>&2 }; say "|||$a|||"'
|||woot
|||

From @ronaldxs

The program below prints the error output after during​: and it usually
shouldn't.

my $x = qqx[ nonesuch ]; print "before\nduring​: $x\nafter\n";

See also on IRC http://irclog.perlgeek.de/perl6/2012-04-29#i_5514465

From emile38@gmail.com

unsubscribe

On Sun, Apr 29, 2012 at 11​:55 AM, Ron Schmidt
<perl6-bugs-followup@​perl.org>wrote​:

# New Ticket Created by Ron Schmidt
# Please include the string​: [perl #​112680]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl6/Ticket/Display.html?id=112680 >

The program below prints the error output after during​: and it usually
shouldn't.

my $x = qqx[ nonesuch ]; print "before\nduring​: $x\nafter\n";

See also on IRC http://irclog.perlgeek.de/perl6/2012-04-29#i_5514465

The RT System itself - Status changed from 'new' to 'open'

From @usev6

Looks like this is still an issue with Rakduo on Parrot and on JVM​:

$ perl6-p -e 'my $a = qx{echo woot 1>&2 }; say "|||$a|||"'
|||woot
|||

$ perl6-j -e 'my $a = qx{echo woot 1>&2 }; say "|||$a|||"'
|||woot
|||

Moar gets it right​:
$ perl6-m -e 'my $a = qx{echo woot 1>&2 }; say "|||$a|||"'
woot
||||||

I don't know how to test this in a portable way. For Unix-like system a test could look like​:

use v6;

use Test;
use lib 't/spec/packages';
use Test​::Util;

plan 1;

is_run 'my $a = qx{echo woot 1>&2}; say "|||$a|||"',
  {
  out => "||||||\n",
  err => "woot\n",
  },
  'qx{} does only capture stdout but not stderr';

@usev6 - Status changed from 'new' to 'open'

From @donaldh

JVM backend fixed by Raku/nqp@4602aa52cb

From @usev6

After some tweaking I managed to make my test work on Windows as well. I added the test to S29-os/system.t with commit Raku/roast@0f4b5b6b49

The error was not fixed for Parrot, but since support for Parrot was suspended with Rakudo Star Release 2015.02, I'm closing this ticket as 'resolved'.

I'll add the ticket to a list of closed ticket living in the mu repository​: https://github.com/perl6/mu/blob/master/misc/rt.perl.org/tickets_closed_parrot_only.txt.

In case support for Parrot will be restored in some future release the listed tickets can be checked and re-opened as appropriate.

@usev6 - Status changed from 'open' to 'resolved'