visual tweaks, thin 80/120 lines, transarent bg

init.lua

@@ -284,6 +284,9 @@ require('lazy').setup({
   'tpope/vim-sleuth', -- Detect tabstop and shiftwidth automatically
   'tpope/vim-fugitive', -- git integration
   'jpalardy/vim-slime', -- for piping code into external service like a REPL
+  'godlygeek/tabular',
+  -- for showing the `colorcolumn` 80 and 120 reference lines as thin lines:
+  'xiyaowong/virtcolumn.nvim',
   'mbbill/undotree', -- recommended undo history system
   {
     'jpalardy/vim-slime', -- for piping code into external service like a REPL
@@ -929,6 +932,12 @@ require('lazy').setup({
       -- any other, such as 'tokyonight-storm', 'tokyonight-moon', or 'tokyonight-day'.
       vim.cmd.colorscheme 'tokyonight-night'
 
+      vim.cmd [[
+        highlight Normal guibg=none ctermbg=none
+        highlight NonText guibg=none ctermbg=none
+        highlight NormalNC guibg=none ctermbg=none
+      ]]
+
       -- You can configure highlights by doing something like:
       vim.cmd.hi 'Comment gui=none'
     end,