error messages when backend is not found or if it does not implement

ICapMessagesReply

scripts/monboob

@@ -29,7 +29,7 @@ import time
 import re
 import sys
 
-from weboob.capabilities.messages import ICapMessages
+from weboob.capabilities.messages import ICapMessages, ICapMessagesReply
 from weboob.tools.application import ConsoleApplication
 from weboob.tools.misc import html2text
 
@@ -77,24 +77,19 @@ class Monboob(ConsoleApplication):
         content = content.split(u'\n-- \n')[0]
 
         bname, id = reply_to.split('.', 1)
-        backend = self.weboob.backends[bname]
+        try:
+            backend = self.weboob.backends[bname]
+        except KeyError:
+            print >>sys.stderr, 'Backend %s not found' % bname
+            return 1
+
+        if not backend.has_caps(ICapMessagesReply):
+            print >>sys.stderr, 'The backend %s does not implement ICapMessagesReply' % bname
+            return 1
 
         thread_id, msg_id = id.rsplit('.', 1)
         backend.post_reply(thread_id, msg_id, title, content)
 
-    MAIL_REGEXP = re.compile('(.*) <(.*)@(.*)>')
-    def get_mail(self, text):
-        if not text:
-            return None
-
-        m = self.MAIL_REGEXP.match(text)
-        if not m:
-            to = text.split('@')[0]
-        else:
-            to = m.group(2)
-
-        return to
-
     @ConsoleApplication.command("run daemon")
     def command_run(self):
         self.weboob.repeat(self.config.get('interval'), self.process)