diff --git a/twander.py b/twander.py
index 73e6986..456b32a 100755
--- a/twander.py
+++ b/twander.py
@@ -6,7 +6,7 @@
 # Program Information
 
 PROGNAME = "twander"
-RCSID    = "$Id: twander.py,v 3.206 2006/12/18 22:02:25 tundra Exp $"
+RCSID    = "$Id: twander.py,v 3.207 2006/12/18 23:27:51 tundra Exp $"
 VERSION  = RCSID.split()[2]
 
 # Copyright Information
@@ -587,7 +587,8 @@
 #####
 
 ASSIGN     = "="               # Assignment for variable definitions
-ASSOCDFLT  = "*"               # Name for default association action
+ASSOCDFLT  = "*"               # Symbol for default association action
+ASSOCEXCL  = "-"               # Symbol for association exclusion action
 ASSOCIATE  = "ASSOC"           # Association keyword
 CONF       = ""                # Config file user selected with -c option
 COMMENT    = r"#"              # Comment introducer string
@@ -1161,7 +1162,7 @@
 
     # Cleanout any old configuration data
 
-    UI.Associations  = {}
+    UI.Associations  = {ASSOCEXCL:[]}
     UI.CmdTable      = {}
     UI.Commands      = []
     UI.ConfigVisited = []
@@ -1768,7 +1769,12 @@
             # Store associations for use at execution time
 
             if cmdkey == ASSOCIATE:
-                UI.Associations[cmdname] = cmd
+                if cmdname == ASSOCEXCL:
+                    for exclude in cmd.split():
+                        print cmdname
+                        UI.Associations[cmdname].append(exclude)
+                else:
+                    UI.Associations[cmdname] = cmd
                 return
 
             # Add the command entry to the command table.
@@ -3576,22 +3582,30 @@
 
         executable = os.stat(selected)[ST_MODE] & (S_IXUSR|S_IXGRP|S_IXOTH)
 
-        # Apply any relevant association information
+        # Apply any relevant association information, skipping types
+        # found in the exclusion list
         
+        excluded = False
+        for exclude in UI.Associations[ASSOCEXCL]:
+            if selected.endswith(exclude) or (OSPLATFORM == 'win32' and selected.lower().endswith(exclude.lower())):
+                excluded = True
+
         assocfound = False
-        for assoc in UI.Associations:
-            if selected.endswith(assoc) or (OSPLATFORM == 'win32' and selected.lower().endswith(assoc.lower())):
-                selected = UI.Associations[assoc]
+        if not excluded:
+            
+            for assoc in UI.Associations:
+                if selected.endswith(assoc) or (OSPLATFORM == 'win32' and selected.lower().endswith(assoc.lower())):
+                    selected = UI.Associations[assoc]
+                    assocfound = True
+
+            # If we did not find a file association and a default
+            # association is defined, apply it to everything
+            # except executable files.
+
+            if not assocfound and (ASSOCDFLT in UI.Associations) and not executable:
+                selected = UI.Associations[ASSOCDFLT]
                 assocfound = True
 
-        # If we did not find a file association and a default
-        # association is defined, apply it to everything
-        # except executable files.
-
-        if not assocfound and (ASSOCDFLT in UI.Associations) and not executable:
-            selected = UI.Associations[ASSOCDFLT]
-            assocfound = True
-
         
         # In the case of Unix-like OSs, if the file is non-executable
         # and has no association, this is an error and needs to
@@ -5129,7 +5143,7 @@
 
     debuginfo = []
     for assocname in UI.Associations:
-        debuginfo.append(PadString(assocname, dASSOCWIDTH) + UI.Associations[assocname])
+        debuginfo.append(PadString(assocname, dASSOCWIDTH) + str(UI.Associations[assocname]))
 
         debuginfo.sort()
     return debuginfo
@@ -5300,7 +5314,7 @@
 
 # Storage For Associations
 
-UI.Associations = {}
+UI.Associations = {ASSOCEXCL:[]}
 
 # Initialize list of all directories visited
 UI.AllDirs    = []