warn if alreaday subscribed to a feed

CHANGELOG

@@ -1,7 +1,9 @@
 # Offpunk History
 
 ## 0.5 - Unreleased
+- Improving subscriptions with more feedback and better detection
 - Avoid deprecated SSL methods (thanks Phoebos for the report)
+- Fixed multiple crashes
 
 ## 0.4 - Feb 21st 2022
 UPGRADE: Users who subscribed to pages before 0.4 should run once the command "list subscribe subscribed". Without that, the subscribed list will be seen as a normal list by sync.

offpunk.py

@@ -2921,7 +2921,14 @@ To unsubscribe, remove the page from the "subscribed" list."""
         counter = 0
         for l in subs:
             link = self.gi.absolutise_url(l[0])
+            already = []
+            for li in self.list_lists():
+                if self.list_is_subscribed(li):
+                    if self.list_has_url(link,li):
+                        already.append(li)
             stri += "[%s] %s [%s]\n"%(counter+1,link,l[1])
+            if len(already) > 0:
+                stri += "\t -> (already subscribed through lists %s)\n"%(str(already))
             counter += 1
         stri += "\n"
         stri += "Which feed do you want to subsribe ? > "