This one goes back to commit ab6f8ca19 and was originally meant to provide compatibility with perl 5.004. There is no point in this now that we use three-arg open and 'no warnings' unconditionally elsewhere.
[ ] This set of changes requires a perldelta entry, and it is included.
[ ] This set of changes requires a perldelta entry, and I need help writing it.
[x] This set of changes does not require a perldelta entry.
This one goes back to commit ab6f8ca19 and was originally meant to provide compatibility with perl 5.004. There is no point in this now that we use three-arg open and 'no warnings' unconditionally elsewhere.