* optwin
* synchronize with Vim

Problem: Cannot use positional arguments for printf()
Solution: Support positional arguments in string formatting

closes: vim/vim#12140

https://github.com/vim/vim/commit/0c6181fec4c362eb9682d5af583341eb20cb1af5

Co-authored-by: Christ van Willegen <cvwillegen@gmail.com>

Farewell to Bram and dedicate upcoming Vim 9.1 to him (vim/vim#12749)

https://github.com/vim/vim/commit/e978b4534a5e10471108259118c0ef791106fd92

Also update the header for the following files that were converted to Vim9
script upstream:

- autoload/ccomplete.lua (vim9jitted)
- ftplugin.vim
- ftplugof.vim
- indent.vim
- indent/vim.vim
- makemenu.vim

This also updates the "Last Change" dates, even if some changes (due to rewrites
to Vim9 script) were not ported.

There's still a few other places where Bram is still mentioned as a maintainer
in the files we and Vim have:

- ftplugin/bash.vim
- indent/bash.vim
- indent/html.vim
- indent/mail.vim
- macros/accents.vim
- macros/editexisting.vim
- syntax/bash.vim
- syntax/shared/typescriptcommon.vim
- syntax/tar.vim
- syntax/typescript.vim
- syntax/typescriptreact.vim
- syntax/zimbu.vim

Maybe future patches will address that.

Also exclude changes to .po files that didn't apply automatically (the
`:messages` maintainer string isn't used in Nvim anyway).

Co-authored-by: Christian Brabandt <cb@256bit.org>

Problem:    Checking translations gives an error for using two messages with
            ngettext() that differ in "%" items.
Solution:   Adjust the check script to tolerate omitting one "%" item.

https://github.com/vim/vim/commit/78ee62563ea940086f094150f0356e38f780c580

Co-authored-by: Bram Moolenaar <Bram@vim.org>

Using :CheckHealth invokes an error, and many of the features from :checkhealth
doesn't even work such as calling only a specific check. Users should use
:checkhealth instead.

- Remove unused code
- Use consistent casing. Variable names such as LibLuV_LIBRARIES is
  needlessly jarring, even if the name might be technically correct.
- Use title casing for packages. find_package(unibilium) requires the
  find_module to be named "Findunibilium.cmake", which makes it harder
  to spot when scanning the files. Instead, use "Unibilium".

Only the most important variables should be shown by default.

This makes it easier to see that -D is referring to the entire
"<variable>=<value>", rather than only <variable>. It also help syntax
highlighters highlight built-in variables.

Include version number in the translated message so that the word order
can be changed.
Also do not translate URL.