From 3dcaed0edeb451586b0c32db93818899f6e91734 Mon Sep 17 00:00:00 2001
From: Mathieu PATUREL <australie.p@gmail.com>
Date: Sat, 7 Jan 2017 16:09:36 +1100
Subject: [PATCH] small optimisation, working

---
 MarkdownLivePreview.py | 6 ++++--
 README.md              | 2 +-
 functions.py           | 2 ++
 sample.md              | 3 +--
 4 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/MarkdownLivePreview.py b/MarkdownLivePreview.py
index 824fe2a..da0ed57 100644
--- a/MarkdownLivePreview.py
+++ b/MarkdownLivePreview.py
@@ -12,11 +12,13 @@ from .functions import *
 class MarkdownLivePreviewListener(sublime_plugin.EventListener):
 
     def on_modified(self, view):
-        window = view.window()
+        if not is_markdown_view(view):
+            return
+
         vsettings = view.settings()
         if vsettings.get(PREVIEW_ENABLED):
             id = vsettings.get(PREVIEW_ID)
-            preview = get_view_from_id(window, id)
+            preview = get_view_from_id(view.window(), id)
             if id is None or preview is None:
                 preview = create_preview(view)
                 sublime.set_timeout_async(lambda: show_html(view, preview), 1000)
diff --git a/README.md b/README.md
index 0729496..fc0b67d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# MarkdownLivePreview
+# MarkdownLivePreview 
 
 This is a sublime text **3** plugin that allows you to preview your markdown instantly *in* it!
 
diff --git a/functions.py b/functions.py
index 93a05ec..04490be 100644
--- a/functions.py
+++ b/functions.py
@@ -75,6 +75,8 @@ def get_view_content(view):
     return view.substr(sublime.Region(0, view.size()))
 
 def get_view_from_id(window, id):
+    if not isinstance(id, int):
+        return
     for view in window.views():
         if view.id() == id:
             return view
diff --git a/sample.md b/sample.md
index ffae9c9..16aef8a 100644
--- a/sample.md
+++ b/sample.md
@@ -6,6 +6,5 @@ Hope you'll enjoy using MarkdownLivePreview!
 
 ![image](https://forum.sublimetext.com/uploads/st-forum-wide.png)
 
-![GitHub](https://octodex.github.com/images/jetpacktocat.png)
+[GitHub](https://octodex.github.com/images/jetpacktocat.png)
 
-This is a test, and it's still loading.