behavior: Wrap extract links script in anonymous namespace

Otherwise it may clash with symbols defined by the page.

2 files changed, 5 insertions, 2 deletions

diff --git a/crocoite/behavior.py b/crocoite/behavior.py
index c658699..95e8160 100644
--- a/crocoite/behavior.py
+++ b/crocoite/behavior.py
@@ -256,7 +256,8 @@ class ExtractLinks (Behavior):
     def onfinish (self):
         tab = self.loader.tab
         self.useScript (self.script)
-        self.links = list (set (tab.Runtime.evaluate (expression=self.script, returnByValue=True)['result']['value']))
+        result = tab.Runtime.evaluate (expression=self.script, returnByValue=True)
+        self.links = list (set (result['result']['value']))
 
 # available behavior scripts. Order matters, move those modifying the page
 # towards the end of available
diff --git a/crocoite/data/extract-links.js b/crocoite/data/extract-links.js
index 5199a63..4d1a3d0 100644
--- a/crocoite/data/extract-links.js
+++ b/crocoite/data/extract-links.js
@@ -1,6 +1,7 @@
 /*	Extract links from a page
  */
 
+(function () {
 /* --- copy&paste from click.js --- */
 /*	Element is visible if itself and all of its parents are
  */
@@ -31,4 +32,5 @@ for (let i=0; i < x.length; i++) {
 		ret.push (x[i].href);
 	}
 }
-ret; /* immediately return results, for use with Runtime.evaluate() */
+return ret; /* immediately return results, for use with Runtime.evaluate() */
+})();