Multi-line support with Reline (see IRB Ruby 2.7)

[svoop]

Ruby 2.7 IRB comes with very handy multi-line handling powered by Reline.

@kyrylo wrote on #1524

This looks exciting. Therefore, in order to stay on top of the game, we have to investigate this and make Pry support this. It will probably close this issue as well.

[zw963]

Yes, this feature is really nice when working on production use console try to repaste a big method,
for now, i have to copy/paste again and again.

[gmonein]

In Rails you can use edit command, this will open default editor (set by EDITOR env variable) for multiline script, or even paste in pry ;)

[fdr]

It's also very good for Ctrl-R reverse-i-search. This doesn't have a good workaround like "edit".

[andrehjr]

Closing this as a duplicate of #2063