Added a comment about transaction internal use.

diff --git a/rsbac/transaction.py b/rsbac/transaction.py
index 9cf8e33..e41d8a9 100644 (file)
--- a/rsbac/transaction.py
+++ b/rsbac/transaction.py
@@ -80,6 +80,8 @@ def withTransaction( fun , uid = g_ALL_USERS , password = None , ttl = None ) :
         _with( CurrentTransaction( n ) , fun , ( Transaction( n ) , ) )
     finally :
         # If the transaction still exist, cancel it inconditionnaly.
+        # This assume that the behavior of forget() on a non-existing
+        # transaction is fine.
         lib.rsbac_list_ta_forget( n , password )
 
 def begin( uid = g_ALL_USERS , password = None , ttl = 0 ) :