Make editing same file in multiple vim instances seamless

ftdetect/polyglot.vim

@@ -8,6 +8,7 @@ if exists("did_load_polyglot")
   finish
 endif
 
+
 let did_load_polyglot = 1
 
 " Switch to compatible mode for the time being
@@ -3496,6 +3497,15 @@ if !has_key(s:disabled_packages, 'sensible')
   " Reload unchanged files automatically.
   set autoread
 
+  " Disable swap, it doesn't play well with autoread
+  set noswapfile
+
+  " Auto reload if file was changed somewhere else (for autoread)
+  augroup polyglot-sensible
+    au!
+    au CursorHold * checktime
+  augroup END
+
   " Enable highlighted case-insensitive incremential search.
   set incsearch
 

plugin/polyglot.vim

@@ -62,6 +62,11 @@ if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'sensible') == -
     set tabpagemax=50
   endif
 
+  " Reduce updatetime from 4000 to 300 to avoid issues with coc.nvim
+  if &updatetime == 4000
+    set updatetime=300
+  endif
+
   " Always save upper case variables to viminfo file.
   if !empty(&viminfo)
     set viminfo^=!