How to get Vim to use a local spell-file in the current directory?

Question

I undestand Vim can do spell-check, and it can modify a spell-file inside ~/.vim to keep words flagged as good.

I'd like to keep a "local" spell-file in the same directory as a file I'm editing, so that if I'm in different directories editing different files, different spell-files would be used.

How would I set up Vim to do this?

Answer 1

Vim's own help is usefull here:

:help spellfile

    Name of the word list file where words are added for the 
    zg and zw commands.  It must end in ".{encoding}.add". 
    You need to include the path, otherwise the file is placed
    in the current directory. 

More detailed information: https://web.archive.org/web/20200808224256/http://thejakeharding.com/tutorial/2012/06/13/using-spell-check-in-vim.html Separate Vim spellfile for custom words

So:

:set spellfile=./en.utf-8.add

hth