on PC, I set an environment variable HOME=C:\Users\warwargr

I then create a .vimrc file in my %HOME% directory, and in this file I put

set viminfo=
let testvar="Thanks"
" :filetype off

" Make double-<Esc> clear search highlights
nnoremap <silent> <Esc><Esc> <Esc>:nohlsearch<CR><Esc>



(The " in .vimrc represents a comment)
(Uncomment the filetype line for type dependent editing)
you can then see this is working with the commands 

:echo testvar

:scriptnames




--------------------------

On PC :dig show digraphs
need to do 

:set fileencoding=latin1
:set encoding=latin1


<CTRL-K> Rg --> �  --> Unicode 174





* This gets three chars under the cursor and 
let x = strpart(getline("."), col(".") - 1, 3)
echo x

http://vimdoc.sourceforge.net/htmldoc/eval.html#functions



* ****************************************************
* I found out that file completion was not working

  I had to run

    complete -p vim

    complete -r vim


  Now it works file

* ****************************************************


To disable logging

echo "set viminfo=" >! .vimrc


This is equivalent to typing the command

:set viminfo=

in the editor itself



* use Shift-V to turn visual block on and off

  use "d" to delete a visual block


* Links

https://www.cs.swarthmore.edu/help/vim/searching.html

For using mac.exe macros with unicode chars
we do not want the file to be utf-8 encoded, because mac.exe
does not use that, so we want it to be latin1

:set fileencoding=latin1



Thus the full recommended .vimrc file is :

set viminfo=
set encoding=utf-8
set fileencoding=latin1


This will ensure that any file will be written in single bytes.

If a file is messed up, you may need to open it with vim, and then

:set fileencoding=latin1

and then write the file back out.