basics

plugin/options.lua

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+-- Hint: use `:h <option>` to figure out the meaning if needed
+vim.opt.clipboard = 'unnamedplus'   -- use system clipboard 
+vim.opt.completeopt = {'menu', 'menuone', 'noselect'}
+vim.opt.mouse = 'a'                 -- allow the mouse to be used in Nvim
+
+-- Tab
+local tabstops = 4
+vim.opt.tabstop = tabstops          -- number of visual spaces per TAB
+vim.opt.softtabstop = tabstops      -- number of spacesin tab when editing
+vim.opt.shiftwidth = tabstops       -- insert 4 spaces on a tab
+vim.opt.expandtab = true            -- tabs are spaces, mainly because of python
+
+-- UI config
+vim.opt.number = true               -- add numbers to each line on the left side
+vim.opt.relativenumber = true       -- show relative numbers
+vim.opt.cursorline = true           -- highlight cursor line underneath the cursor horizontally
+vim.opt.splitbelow = true           -- open new vertical split bottom
+vim.opt.splitright = true           -- open new horizontal splits right
+vim.opt.termguicolors = true        -- enabl 24-bit RGB color in the TUI
+vim.opt.showmode = true             -- we are experienced,we know we need the "-- INSERT --" mode hint
+
+-- Searching
+vim.opt.incsearch = true            -- search as characters are entered
+vim.opt.hlsearch = true             -- highlight matches
+vim.opt.ignorecase = true           -- ignore case in searches by default
+vim.opt.smartcase = true            -- but make it case sensitive if an uppercase is entered