From cbb65c137e969cae4d442411c6796a6027316a2e Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Sun, 8 Jul 2018 17:24:41 +1200
Subject: Move shebang updating into filetype.vim

Much more logical location.
---
 vim/filetype.vim | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'vim/filetype.vim')

diff --git a/vim/filetype.vim b/vim/filetype.vim
index ad2545a0..bda01984 100644
--- a/vim/filetype.vim
+++ b/vim/filetype.vim
@@ -42,6 +42,13 @@ function! s:StripRepeat()
 
 endfunction
 
+" Check if the first line is a shebang
+function! s:CheckShebang()
+  if line('''[') == 1 && stridx(getline(1), '#!') == 0
+    doautocmd filetypedetect BufRead
+  endif
+endfunction
+
 " Use our own filetype detection rules
 augroup filetypedetect
   autocmd!
@@ -508,4 +515,10 @@ augroup filetypedetect
         \|  runtime scripts.vim
         \|endif
 
+  " If supported, on leaving insert mode, check whether the first line was "
+  " changed and is a shebang format, and if so, re-run filetype detection
+  if v:version > 700
+    autocmd InsertLeave * call s:CheckShebang()
+  endif
+
 augroup END
-- 
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