Added code to limit command line length for very large mailboxes

Keywords: 


(jgoerzen@complete.org--projects/offlineimap--head--1.0--patch-4)

offlineimap/folder/IMAP.py

@@ -282,6 +282,12 @@ class IMAPFolder(BaseFolder):
         self.processmessagesflags('-', uidlist, flags)
 
     def processmessagesflags(self, operation, uidlist, flags):
+        if len(uidlist) > 101:
+            # Hack for those IMAP ervers with a limited line length
+            self.processmessagesflags(operation, uidlist[:100], flags)
+            self.processmessagesflags(operation, uidlist[100:], flags)
+            return
+        
         imapobj = self.imapserver.acquireconnection()
         try:
             try: