Merge pull request #205 from neilmacintyre/master

Fix blacklist - fixes issue #204

Author: neilmacintyre

book/tutorial/blacklist.md

@@ -1,7 +1,5 @@
 # Blacklist
 
- ** Warning: if you have a trailing comma after you last regular expression all webistes will be blacklisted **
-
 Sometimes you may perfer to use a website's default shortcuts without having to first enter [pass mode](https://key.saka.io/tutorial/pass_keys); if this is the case you can blacklist the website. When a url is blacklisted the page will behave as though Saka Key is disabled.
 
 ## Navigating to Blacklist

src/client/modes.js

@@ -170,8 +170,10 @@ export function changeMode (modeChangeEvent) {
   let patterns = modeChangeEvent.options.blacklist
     .split(',')
     .map(patternStr => {
-      patternStr = patternStr.trim()
-      return new RegExp(patternStr)
+      if (patternStr !== '') {
+        patternStr = patternStr.trim()
+        return new RegExp(patternStr)
+      }
     })
   if (enabled) {
     if (anyMatch(patterns, window.location.href) === true) {