On Fri, Oct 7, 2022 at 11:42 AM Enan Ajmain <3nan.ajm...@gmail.com> wrote:
>
> On Fri, 7 Oct 2022 11:13:27 +0200
> Tony Mechelynck <antoine.mechely...@gmail.com> wrote:
>
> > There are rare cases (which I won't describe here — if they applied to
> > you you would know it, and what to do) where it is worth setting $VIM
> > to some nondefault value.
>
> Thanks for the information. The thing is I knew all the things you
> explained (not a terribly new user here; been using for five years).
> Except the use case of $VIM. Which you "won't describe here." Any link
> where I can read up on it?
>
>
> --
> Enan
Well, the Vim executables I compile myself come with $VIM defaulted to
/usr/local/share/vim and $VIMRUNTIME set to
/usr/local/share/vim/vim90/. Those from my Linux distro have $VIM set
to /usr/share/vim and $VIMRUNTIME set to /usr/share/vim/vim90. The
"system vimrc" is at, respectively, $VIM/vimrc and /etc/vimrc but
neither of them exist. My vimrc sets $VIM to /usr/share/vim so that
they both will find my user-written scripts (at $VIM/vimfiles and
below) at a common location. I don't touch $VIMRUNTIME so each of them
uses its own "distribution" scripts. This way, in the rare case that I
have to use the distro's Vim rather than my own, it will work
identically apart from a difference in patchlevels and in featureset.
The following lines do that, at the very top of my vimrc:
let $VIM = '/usr/share/vim'
set
runtimepath=~/.vim,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,~/.vim/after
let $VIMSRC = expand('~/.build/vim/vim-hg/src', ':p')
The ":set runtimepath" statement is there to make sure that the new
value of $VIM is correctly taken up. $VIMRC is an environment variable
which I set within Vim to get easily at my Vim source.
Best regards,
Tony.
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