Feature #21263: eval-after-require hook

• Status: Open
• Assignee: -
• Target version: -

[znz (Kazuhiro NISHIYAMA)]

I want to register hook after require.
But I have no idea how to write it.

Expected use cases:

1. Load related things after require.
   For example, IRB load related RBS after require something.
2. Soft dependency.
   For example, mashalling libraries load codes supporting bigdecimal, date, or some optional data types after require them only.