some config changes

init.lua

@@ -120,7 +120,8 @@ end)
 
 -- Enable break indent
 vim.opt.breakindent = true
-
+vim.opt.wrap = false
+vim.opt.sidescroll = 1
 -- Save undo history
 vim.opt.undofile = true
 
@@ -156,6 +157,14 @@ vim.opt.cursorline = true
 
 -- Minimal number of screen lines to keep above and below the cursor.
 vim.opt.scrolloff = 10
+vim.opt.sidescrolloff = 16
+
+-- personalise default tab width
+vim.opt.softtabstop = 4
+vim.opt.shiftwidth = 4
+
+-- set column guide
+vim.opt.colorcolumn = '80'
 
 -- [[ Basic Keymaps ]]
 --  See `:help vim.keymap.set()`
@@ -165,7 +174,8 @@ vim.opt.scrolloff = 10
 vim.keymap.set('n', '<Esc>', '<cmd>nohlsearch<CR>')
 
 -- Diagnostic keymaps
-vim.keymap.set('n', '<leader>q', vim.diagnostic.setloclist, { desc = 'Open diagnostic [Q]uickfix list' })
+vim.keymap.set('n', '<leader>eq', vim.diagnostic.setloclist, { desc = 'Expand diagnostic [Q]uickfix list' })
+vim.keymap.set('n', '<leader>ef', vim.diagnostic.open_float, { desc = 'Expand diagnostic [F]loat' })
 
 -- Exit terminal mode in the builtin terminal with a shortcut that is a bit easier
 -- for people to discover. Otherwise, you normally need to press <C-\><C-n>, which
@@ -325,6 +335,7 @@ require('lazy').setup({
       spec = {
         { '<leader>c', group = '[C]ode', mode = { 'n', 'x' } },
         { '<leader>d', group = '[D]ocument' },
+        { '<leader>e', group = '[E]xpand diagnostic' },
         { '<leader>r', group = '[R]ename' },
         { '<leader>s', group = '[S]earch' },
         { '<leader>w', group = '[W]orkspace' },
@@ -656,6 +667,9 @@ require('lazy').setup({
       local ensure_installed = vim.tbl_keys(servers or {})
       vim.list_extend(ensure_installed, {
         'stylua', -- Used to format Lua code
+        'clangd',
+        'gopls',
+        'pyright',
       })
       require('mason-tool-installer').setup { ensure_installed = ensure_installed }
 
@@ -927,11 +941,11 @@ require('lazy').setup({
   --  Here are some example plugins that I've included in the Kickstart repository.
   --  Uncomment any of the lines below to enable them (you will need to restart nvim).
   --
-  -- require 'kickstart.plugins.debug',
-  -- require 'kickstart.plugins.indent_line',
+  require 'kickstart.plugins.debug',
+  require 'kickstart.plugins.indent_line',
   -- require 'kickstart.plugins.lint',
   -- require 'kickstart.plugins.autopairs',
-  -- require 'kickstart.plugins.neo-tree',
+  require 'kickstart.plugins.neo-tree',
   -- require 'kickstart.plugins.gitsigns', -- adds gitsigns recommend keymaps
 
   -- NOTE: The import below can automatically add your own plugins, configuration, etc from `lua/custom/plugins/*.lua`
@@ -939,7 +953,7 @@ require('lazy').setup({
   --
   --  Uncomment the following line and add your plugins to `lua/custom/plugins/*.lua` to get going.
   --    For additional information, see `:help lazy.nvim-lazy.nvim-structuring-your-plugins`
-  -- { import = 'custom.plugins' },
+  { import = 'custom.plugins' },
 }, {
   ui = {
     -- If you are using a Nerd Font: set icons to an empty table which will use the