I have vim 8.1 installed.
I want to use the help files translated into french.
The debian package vimhelp-fr is not maintained any more, the compressed tar is unavailable, so I installed the version 6.3 of the debian package.
The files are installed under /usr/share/vim/vim63/doc/ and their extention is .frx
I can't find a way to access them from :help
In /usr/share/vim/vim81/filetype.vim, I can read:
" Vim help file
au BufNewFile,BufRead $VIMRUNTIME/doc/*.txt setf help
So I tried to add the line
au BufNewFile,BufRead usr/share/vim/vim63/doc/*.frx setf help
in a file help-fr.vim under ~/vim/ftdetect/, and also directly in filetype.vim.
Then I tried to type
:help help.frx
and
:help /usr/share/vim/vim63/doc/help.frx
within vim.
No success.
How can access the french files using :help to see them like help files?