must chomp input files (was Re: processing a file in chunks)

[yary]

It seems that *ARGFILES is opened with :chomp=True, so adding :!chomp to
the lines call is too late.

$ perl6 -e "say 11; say 22; say 33;" | perl6 -e '.say for lines(:chomp)'

*11*

*22*

*33*

$ perl6 -e "say 11; say 22; say 33;" | perl6 -e '.say for lines(:!chomp)'

*11*

*22*

*33*

-y