List2Dict(): Add `foldcase' argument. When true, coerce all elements

in the dict to lowercase (yes they must be strings).

1 files changed, 10 insertions, 7 deletions

diff --git a/Mailman/Utils.py b/Mailman/Utils.py
index 2a2bfc41e..5ffdb99c7 100644
--- a/Mailman/Utils.py
+++ b/Mailman/Utils.py
@@ -275,13 +275,16 @@ def GetPossibleMatchingAddrs(name):
 
 
 
-def List2Dict(list):
-    """List2Dict returns a dict keyed by the entries in the list
-    passed to it."""
-    res = {}
-    for item in list:
-        res[item] = 1
-    return res
+def List2Dict(list, foldcase=0):
+    """Return a dict keyed by the entries in the list passed to it."""
+    d = {}
+    if foldcase:
+        for i in list:
+            d[i.lower()] = 1
+    else:
+        for i in list:
+            d[i] = 1
+    return d
 
 
 def FindMatchingAddresses(name, dict, *dicts):