RFC: Support for v:vim.opt dictionary to access vim options

[Yegappan Lakshmanan]

Hi all,

Currently Vim options can be accessed from a Vim script by prefixing the
option name with a '&':

let &shiftwidth = 2
let oldval = &shiftwidth

The Python Vim interface supports a dictionary for accessing the Vim options
https://vimhelp.org/if_pyth.txt.html#python-options

The Lua Vim interface in Neovim support this:
https://github.com/neovim/neovim/blob/master/runtime/doc/lua.txt#L1022

But this is currently not supported by Vim script.

What do you think about adding support for a v:vim.opt dictionary to
read/modify Vim options:

let v:vim.opt.shiftwidth = 2
let oldval = v:vim.opt.shiftwidth
echo has_key(v:vim.opt, 'newopt')
echo keys(v:vim.opt)
echo items(v:vim.opt)

The changes to support this are available at:
https://github.com/yegappan/vim/commit/52beff56044e93c7bb982243ff593b461cd649c2

Regards,
Yegappan

[Maxim Kim]

&sw = 1
var old_sw = &sw
echo exists('&newopt')
echo getcompletion('', 'option') # this might be capped though, at least for other completions it is
for opt in getcompletion('', 'option')
    echo opt
endfor
for opt in getcompletion('', 'option')
    if !empty(opt)
       exe "set " .. opt .. "?"
    endif
endfor

And there is also buffer local options, are you about to have 2 dictionaries?

понедельник, 24 января 2022 г. в 09:38:27 UTC+3, yega...@gmail.com:

[Bram Moolenaar]

I do not see the advantage. It's extra code, more choices for a script
writer, thus there needs to be a good justification.

--
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