From 86e4f10b26be46b2160b344b48ab2776b54c0272 Mon Sep 17 00:00:00 2001
From: Thomas Buckley-Houston
Date: Mon, 12 Jun 2017 14:08:27 +0700
Subject: Millisecond delay before checking &buftype

Fixes bug where some buffers, well actually a lot of buffers, don't
immediately set their &buftype/&modifiable/&readonly state. Hopefully
now any buffer like NERD_Tree, Fugitive's GBlame, Vim-Plug's update
buffer, quicklist, location, etc, etc.

This has been a looooong standing bug. It makes me very hapy to fix
this.

I've set the delay to 1 millisecond, so be prepared that more is needed.
---
 autoload/novim_mode.vim | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/autoload/novim_mode.vim b/autoload/novim_mode.vim
index 0abe936..a8de55a 100644
--- a/autoload/novim_mode.vim
+++ b/autoload/novim_mode.vim
@@ -4,8 +4,6 @@ function! s:IsEditableBuffer()
   if &buftype ==# 'nofile'
      \|| !&modifiable
      \|| &readonly
-     \|| bufname('%') =~# 'NERD_tree_'
-     \|| bufname('%') =~# 'fugitiveblame'
     return 0
   else
     return 1
@@ -46,7 +44,10 @@ function! s:InsertAndSelectionBehaviour()
   " Intelligently set/unset insertmode
   augroup start_insertmode
     autocmd!
-    autocmd BufEnter * call s:InsertMode()
+    " The timer here delays the call to check whether the current buffer
+    " is an editable one. Without the delay, the check is often too early
+    " to correctly get the value of `&buftype`, etc.
+    autocmd BufEnter * call timer_start(1, {->execute('call s:InsertMode()')})
   augroup END
 
   " Mostly changes the way selection works.
-- 
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