chore: replace vim.opt with vim.o

In contrast to vim.opt, vim.o opens the documentation on hover,
and provides type hints which will be useful for beginners (and also experts who are just lazy ;).

In addition it is more intuitive to get the value of the option
(e.g. vim.bo.modifiable instead of vim.opt_local.modifiable:get()).

The main downside is that it is less convenient in the cases where
vim.opt provides a table (This is tracked in neovim/neovim#20107).
So for now I left vim.opt.listchars and vim.opt.rtp unchanged.

nvim-lua@c92ea7c

Author: nickgnd

init.lua

@@ -94,72 +94,77 @@ vim.g.maplocalleader = ' '
 vim.g.have_nerd_font = true
 
 -- [[ Setting options ]]
--- See `:help vim.opt`
+-- See `:help vim.o`
 -- NOTE: You can change these options as you wish!
 --  For more options, you can see `:help option-list`
 
 -- Make line numbers default
-vim.opt.number = true
+vim.o.number = true
 -- You can also add relative line numbers, to help with jumping.
 --  Experiment for yourself to see if you like it!
-vim.opt.relativenumber = true
+vim.o.relativenumber = true
 
 -- Enable mouse mode, can be useful for resizing splits for example!
-vim.opt.mouse = 'a'
+vim.o.mouse = 'a'
 
 -- Don't show the mode, since it's already in the status line
-vim.opt.showmode = false
+vim.o.showmode = false
 
 -- Sync clipboard between OS and Neovim.
 --  Schedule the setting after `UiEnter` because it can increase startup-time.
 --  Remove this option if you want your OS clipboard to remain independent.
 --  See `:help 'clipboard'`
 vim.schedule(function()
-  vim.opt.clipboard = 'unnamedplus'
+  vim.o.clipboard = 'unnamedplus'
 end)
 
 -- Enable break indent
-vim.opt.breakindent = true
+vim.o.breakindent = true
 
 -- Save undo history
-vim.opt.undofile = true
+vim.o.undofile = true
 
 -- Case-insensitive searching UNLESS \C or one or more capital letters in the search term
-vim.opt.ignorecase = true
-vim.opt.smartcase = true
+vim.o.ignorecase = true
+vim.o.smartcase = true
 
 -- Keep signcolumn on by default
-vim.opt.signcolumn = 'yes'
+vim.o.signcolumn = 'yes'
 
 -- Decrease update time
-vim.opt.updatetime = 250
+vim.o.updatetime = 250
 
 -- Decrease mapped sequence wait time
-vim.opt.timeoutlen = 300
+vim.o.timeoutlen = 300
 
 -- Configure how new splits should be opened
-vim.opt.splitright = true
-vim.opt.splitbelow = true
+vim.o.splitright = true
+vim.o.splitbelow = true
 
 -- Sets how neovim will display certain whitespace characters in the editor.
 --  See `:help 'list'`
 --  and `:help 'listchars'`
-vim.opt.list = true
+--
+--  Notice listchars is set using `vim.opt` instead of `vim.o`.
+--  It is very similar to `vim.o` but offers an interface for conveniently interacting with tables.
+--   See `:help lua-options`
+--   and `:help lua-options-guide`
+vim.o.list = true
 vim.opt.listchars = { tab = '» ', trail = '·', nbsp = '␣' }
 
 -- Preview substitutions live, as you type!
-vim.opt.inccommand = 'split'
+vim.o.inccommand = 'split'
 
 -- Show which line your cursor is on
-vim.opt.cursorline = true
+vim.o.cursorline = true
 
 -- Minimal number of screen lines to keep above and below the cursor.
-vim.opt.scrolloff = 10
+vim.o.scrolloff = 10
 
 -- if performing an operation that would fail due to unsaved changes in the buffer (like `:q`),
 -- instead raise a dialog asking if you wish to save the current file(s)
 -- See `:help 'confirm'`
-vim.opt.confirm = true
+vim.o.confirm = true
 
 -- [[ Basic Keymaps ]]
 --  See `:help vim.keymap.set()`
@@ -256,8 +261,11 @@ if not (vim.uv or vim.loop).fs_stat(lazypath) then
   if vim.v.shell_error ~= 0 then
     error('Error cloning lazy.nvim:\n' .. out)
   end
-end ---@diagnostic disable-next-line: undefined-field
-vim.opt.rtp:prepend(lazypath)
+end
+
+---@type vim.Option
+local rtp = vim.opt.rtp
+rtp:prepend(lazypath)
 
 -- [[ Configure and install plugins ]]
 --
@@ -328,7 +336,7 @@ require('lazy').setup({
     event = 'VimEnter', -- Sets the loading event to 'VimEnter'
     opts = {
       -- delay between pressing a key and opening which-key (milliseconds)
-      -- this setting is independent of vim.opt.timeoutlen
+      -- this setting is independent of vim.o.timeoutlen
       delay = 0,
       icons = {
         -- set icon mappings to true if you have a Nerd Font

lua/kickstart/plugins/lint.lua

@@ -52,7 +52,7 @@ return {
           -- Only run the linter in buffers that you can modify in order to
           -- avoid superfluous noise, notably within the handy LSP pop-ups that
           -- describe the hovered symbol using Markdown.
-          if vim.opt_local.modifiable:get() then
+          if vim.bo.modifiable then
             lint.try_lint()
           end
         end,