nvim: improve ToggleGutter to remove indent trace, diagnostics

So that it fulfills its intended purpose: making vim ready for terminal
level copying.

This removes the extra overlay'd text segments from the window

nvim/lua/psoxizsh/functions.lua

@@ -4,18 +4,22 @@ local M, S = {}, {}
 
 ---Toggle the line numbers and diagnostic gutter
 function M.ToggleGutter()
-  local o = vim.opt
+  local o, diagnostic = vim.opt, vim.diagnostic
 
   if o.number:get() then
     S.signcolumn = o.signcolumn:get()
     o.number = false
     o.relativenumber = false
     o.signcolumn = 'no'
+    diagnostic.enable(false)
   else
     o.number = true
     o.relativenumber = true
     o.signcolumn = S.signcolumn or 'yes:1'
+    diagnostic.enable(true)
   end
+
+  vim.cmd 'IBLToggle'
 end
 
 ---Open a float with your local config files