refactor(nvim): Remove autoload

- Migrated trailing space trim and write+execute to Lua
- Drop `has_lsp` left over from Lightline config
- Drop unused `Redir` and `Pcol` functions

.config/nvim/lua/zeroknight/config/keymaps.lua

@@ -96,7 +96,7 @@ wk.register({
     L = { vim.diagnostic.setloclist, 'Dump diagnostics to location list' },
     Q = { vim.diagnostic.setqflist, 'Dump diagnostics to quickfix list' },
   },
-  wx = { '<Cmd>call zeroknight#util#save_and_exec()<CR>', 'Write and Execute' },
+  wx = { '<Cmd>write | source %<CR>', 'Write and Execute' },
   y = { '"+y', 'Yank to clipboard', mode = { 'n', 'v' } },
   Y = { '"+Y', 'Yank til EOL to clipboard' },
 }, { prefix = '<Leader>' })
@@ -106,7 +106,7 @@ wk.register({
 wk.register({
   K = { 'K', 'Run keywordprg on word' },
   r = {
-    s = { '<Cmd>call zeroknight#util#TrimTrailingSpace()<CR>', 'Trim trailing spaces' },
+    s = { util.trim_whitespace, 'Trim trailing spaces' },
     w = { ':%s/\\<<C-r><C-w>\\>//gI<Left><Left><Left>', 'Substitute cursor word' },
     W = { ':%s/\\<<C-r><C-a>\\>//gI<Left><Left><Left>', 'Substitute cursor WORD' },
   },

.config/nvim/lua/zeroknight/util/init.lua

@@ -115,6 +115,15 @@ function M.toggle_background()
   end
 end
 
+-- Trim trailing whitespace in buffer while preserving state/position
+function M.trim_whitespace(buffer)
+  buffer = buffer or 0
+  local trimmed = vim.tbl_map(function(x)
+    return x:gsub('%s+$', '')
+  end, vim.api.nvim_buf_get_lines(buffer, 0, -1, true))
+  vim.api.nvim_buf_set_lines(buffer, 0, -1, true, trimmed)
+end
+
 -- From LazyVim
 -- returns the root directory based on:
 -- * lsp workspace folders