From @masak

$ perl6 -v
This is perl6 version 2015.03-170-g143f621 built on MoarVM version
2015.03-49-gce786a1

$ perl6 -e '$_ = "5 breads and 2 fish"; s[(\d)] = "{$0 * 10}"; .say'
50 breads and 2 fish

$ cat input
5 breads and 2 fish
$ perl6 -pe 's[(\d)] = "{$0 * 10}"' < input
use of uninitialized value of type Nil in numeric context in block
<unit> at -e​:1

0 breads and 2 fish

Expectation​: that `s[(\d)] = "{$0 * 10}"` statement shouldn't give a
warning about $0 being Nil, just because I'm in -p

From @skids

On Mon, 06 Apr 2015 07​:22​:19 -0700, masak wrote​:

$ perl6 -v
This is perl6 version 2015.03-170-g143f621 built on MoarVM version
2015.03-49-gce786a1

$ perl6 -e '$_ = "5 breads and 2 fish"; s[(\d)] = "{$0 * 10}"; .say'
50 breads and 2 fish

$ cat input
5 breads and 2 fish
$ perl6 -pe 's[(\d)] = "{$0 * 10}"' < input
use of uninitialized value of type Nil in numeric context in block
<unit> at -e​:1

0 breads and 2 fish

Expectation​: that `s[(\d)] = "{$0 * 10}"` statement shouldn't give a
warning about $0 being Nil, just because I'm in -p

$ echo 5 breads and 2 fish | perl6 -pe 's[(\d)] = "{$0 * 10}"'
50 breads and 2 fish

Seems to have been resolved at some point.
Tests added to S19-command-line-options/03-dash-p.t

Marking ticket resolved.

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

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