On Thu, 16 Mar 2017, John Hasler wrote:
Richard Owlett writes:
I require two things:
1. a search and replace which can include a "newline" in new string.
2. display/edit 2 files simultaneously *side by side*
Emacs.
In case OP decides to install emacs, given his previously expressed
appreciation of fine documentation, I recommend installing also (for
the chosen version NN of emacs) the emacsNN-common-non-dfsg package
from the non-free repository.
This is the simplest way of installing the info pages for emacs.
That they happen to reside in non-free is conceivably unexpected, so
it bears special mention.