escape font names

Steve Edson · Steve Edson · commit 11fbc00e34fd · 2018-06-19T12:40:10.000+01:00
diff --git a/src/SteveEdson/BitBar.php b/src/SteveEdson/BitBar.php
@@ -235,7 +235,7 @@ public function format() {
                 $this->usedPipe = true;
             }
 
-            $string .= ' font=' . $this->fontFace;
+            $string .= ' font=\'' . $this->fontFace . '\'';
         }
 
         if ($this->colour) {
