Re: [vim/vim] Feature Request: can use setbufvar() to set window options before buffer has a window (Issue #21089)

h-east left a comment (vim/vim#21089)

> The docuement states that window "variable" can't be changed. 'number' is
> an "option".

You are right, my quote was misleading. The documentation of `setbufvar()` is
inaccurate here and I will fix it: setting a window option only works when a
window in the current tab page displays the buffer. Otherwise the temporary
autocommand window is used and the value is dropped. 'buftype' worked because
it is a buffer option, and replacing `curbuf` is enough for that. As for
`getbufvar()`, it returns the current window's value, so it does not show that
the buffer holds a window option.

What makes this more than a small addition is where the values live.
Window-local options are stored in wininfo entries per (window, buffer) pair,
not per buffer. A buffer that was never displayed has no entry and gets the
global window values on first display. So `setbufvar()` would need a new
per-buffer pending value, plus a rule for which one wins when a wininfo entry
also exists.

For the use case, a buffer-local autocommand applies the options at the moment
the buffer gets a window:

```vim
autocmd BufWinEnter <buffer=N> setlocal nonumber
```

Once the window exists, `setwinvar()` or `win_execute()` is the direct way.

-- 
Reply to this email directly or view it on GitHub:
https://github.com/vim/vim/issues/21089#issuecomment-5352400045
You are receiving this because you are subscribed to this thread.

Message ID: <vim/vim/issues/21089/[email protected]>

-- 
-- 
You received this message from the "vim_dev" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php

--- 
You received this message because you are subscribed to the Google Groups "vim_dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
To view this discussion visit https://groups.google.com/d/msgid/vim_dev/vim/vim/issues/21089/5352400045%40github.com.