nvim: use tabs by default and use guess-indent.nvim to determine tabs vs spaces via statistics

chezmoi/private_dot_config/nvim/init.lua

@@ -37,7 +37,7 @@ end
 now(function()
     local opts = {
         -- tabs look like 4 spaces {
-        expandtab = true,
+        expandtab = false, -- use tabs by default
         tabstop = 4,
         shiftwidth = 4,
         softtabstop = 4,
@@ -60,6 +60,16 @@ now(function()
 end)
 -- }}} vim options
 
+-- {{{ automatically determine indentation via statistics
+now(function()
+    add({
+        source = 'nmac427/guess-indent.nvim'
+    })
+
+    require('guess-indent').setup()
+end)
+-- }}}
+
 -- {{{ color themes
 now(function()
     -- {{{ gruvbox