From 9eac227835317d2fad9ae9b816590ce33a3ab7c4 Mon Sep 17 00:00:00 2001
From: Shougo Matsushita <Shougo.Matsu@gmail.com>
Date: Tue, 17 May 2016 20:50:40 +0900
Subject: [PATCH] Fix #343 check modifiable

---
 autoload/neosnippet/handlers.vim | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/autoload/neosnippet/handlers.vim b/autoload/neosnippet/handlers.vim
index 78a813e..db27759 100644
--- a/autoload/neosnippet/handlers.vim
+++ b/autoload/neosnippet/handlers.vim
@@ -60,6 +60,10 @@ function! neosnippet#handlers#_cursor_moved() abort "{{{
 endfunction"}}}
 
 function! neosnippet#handlers#_all_clear_markers() abort "{{{
+  if !&l:modifiable
+    return
+  endif
+
   let pos = getpos('.')
 
   try