vim using line back in register

Question

I would like to register this:

a

b

So I typed : then let @c='a^Mb' and I tried also with \r and \n instead of ^M

When I type "cp vim do not consider this as a return to line but as chars.

Update:

I am running vim 7.4.52 on 3.16.0-38-generic #52~14.04.1-Ubuntu

Answer 1

:let @c="a\n\nb"

Seems to be working fine for me on vim7.4 on FreeBSD. (Double quotes instead of single quotes)

If it's not working, you might want to specify which platform and version of vim?