Default to last URL checked in GUI.

doc/changelog.txt

@@ -14,6 +14,11 @@ Fixes:
   Closes: SF bug #3377193
 - checking: Ignore attribute errors when printing the Qt version.
 
+Changes:
+- gui: Default to last URL checked in GUI (if no URL is given as
+  commandline parameter).
+  Closes: SF bug 3311271
+
 Features:
 - checking: New option --user-agent to set the User-Agent header
   string sent to HTTP web servers. Note that this does not change

linkcheck/gui/__init__.py

@@ -117,6 +117,8 @@ class LinkCheckerMain (QtGui.QMainWindow, Ui_MainWindow):
         self.urlinput.setModel(self.recent)
         if url:
             self.urlinput.setText(url)
+        elif documents:
+            self.urlinput.setText(documents[0])
 
     def init_app (self):
         """Set window size and position, GUI options and reset status."""