Add prompt to help old-Thunderbird users find open-options menu item

README.md

@@ -178,16 +178,12 @@ See the [Compatibility wiki page](https://github.com/adam-p/markdown-here/wiki/C
 
 ## Building the Extension Bundles
 
-"Building" is really just zipping. Create all archives relative to the `src` directory.
-
-Before zipping, delete the `src/common/test` directory. This will prevent the autotests from ending up in the release.
-
-An important preparatory step is to remove any system-generated hidden files that shouldn't be included in the release file (like Windows' `desktop.ini` and OS X's `.DS_Store`, etc.). This shell command will delete those unwanted files:
-
 ```
-find . -name "desktop.ini" -or -name ".*" -and -not -name "." -and -not -name ".git*" -print0 | xargs -0 rm -rf
+cd utils
+node build.js
 ```
 
+
 ### Chrome and Opera extension
 
 Create a file with a `.zip` extension containing these files and directories:

src/common/options.js

@@ -71,6 +71,7 @@ function onLoad() {
   // Restore previously set options (asynchronously)
   //
 
+  var optionsGetSuccessful = false;
   OptionsStore.get(function(prefs) {
     cssEdit.value = prefs['main-css'];
     cssSyntaxEdit.value = prefs['syntax-css'];
@@ -93,6 +94,8 @@ function onLoad() {
 
     // Start watching for changes to the styles.
     setInterval(checkChange, 100);
+
+    optionsGetSuccessful = true;
   });
 
   // Load the changelist section
@@ -125,6 +128,17 @@ function onLoad() {
     }
   });
 
+  // Older Thunderbird may try to open this options page in a new ChromeWindow, and it
+  // won't work. So in that case we need to tell the user how they can actually open the
+  // options page. This is pretty ungraceful, but few users will encouter it, and fewer as
+  // time goes on.
+  setTimeout(function() {
+    if (!optionsGetSuccessful) {
+      alert('It looks like you are running an older version of Thunderird.\nOpen the Markdown Here Options via the message window Tools menu.');
+      window.close();
+    }
+  }, 500);
+
   loaded = true;
 }
 document.addEventListener('DOMContentLoaded', onLoad, false);