I will be greatful if I can know how many people have made a
code of vim (in the past and now).
I have found 23 names of persons in files, but I suppose that
there is more.
Well, as Vim is extensible, I suppose what you consider "vim"
will radically change that number. You can read a number of the
names under
:help credits
where you'll find His Vimness, Bram, along with 3
documentation-author credits, and 56 other names of contributors.
There may also be a number of uncredited patch contributors.
On top of that, in the Vim Tip and Vim Script collections of
vim-script code at www.vim.org, you'll find a number of add-ons
that folks have contributed. While not part of Vim-proper, they
are tidbits that folks have found helpful for making Vim do what
they want it to. I don't know of a good way to find how many
folks have contributed to that.
There are also various other contributers' names scattered
throughout the help files.
Lastly, there are a number of us folks who hang out on the
mailing list...basically free tech-support for vim. While there
might not be much code other than occasional one-liners or short
scripts, I'd consider the smart folks contributing on this list
one of Vim's best assets (in addition to being a killer text editor).
-tim