refactor: unify syntax langs

lua/config/keymaps.lua

@@ -50,9 +50,9 @@ end
 map('n', ']b', cmd('bnext'))
 map('n', '[b', cmd('bprevious'))
 map('n', '<leader>bl', cmd('ls'))
-map('n', '<leader>bb', '<C-^>') -- toggle between buffers
-map('n', '<leader>bd', cmd('bdelete'))
+map('n', '<leader>bd', cmd(':bp | bd #'))
 map('n', '<leader>bo', cmd('%bd|e#')) -- close all except current
+map('n', '<leader>bb', '<C-^>') -- toggle between buffers
 
 -- Terminal
 map('n', '<leader>xx', cmd('TermDefault'))

lua/config/options.lua

@@ -87,3 +87,25 @@ vim.opt.timeout = true
 vim.opt.ttimeout = true
 vim.opt.timeoutlen = 500
 vim.opt.ttimeoutlen = 10
+
+vim.keymap.set('n', '<leader>d', vim.diagnostic.open_float, { noremap = true, silent = true })
+vim.diagnostic.config({
+  update_in_insert = false,
+  virtual_text = {
+    prefix = '', -- remove annoying ▎ etc
+    format = function(diagnostic)
+      if diagnostic.source then
+        return string.format('[%s] %s', diagnostic.source, diagnostic.message)
+      end
+      return diagnostic.message
+    end,
+  },
+  float = {
+    border = 'rounded',
+    source = true, -- show source in floating window too
+  },
+  severity_sort = true,
+})
+
+vim.opt.foldmethod = 'expr'
+vim.opt.foldexpr = 'nvim_treesitter#foldexpr()'