Walter's patch for ipapi.py & hooks.py: TryNext exception can now

have arguments that alter the values passed for the second hook
(and thus enable using hooks as filters)

IPython/hooks.py

@@ -32,7 +32,7 b" ip.set_hook('editor', calljed)"
 You can then enable the functionality by doing 'import myiphooks'
 somewhere in your configuration files or ipython command line.
 
-$Id: hooks.py 1214 2006-03-16 17:22:15Z vivainio $"""
+$Id: hooks.py 1274 2006-04-26 14:01:37Z vivainio $"""
 
 #*****************************************************************************
 #       Copyright (C) 2005 Fernando Perez. <[e-mail]>
@@ -130,8 +130,10 b' class CommandChainDispatcher:'
             try:
                 ret = cmd(*args, **kw)
                 return ret
-            except ipapi.TryNext:
-                pass
+            except ipapi.TryNext, exc:
+                if exc.args or exc.kwargs:
+                    args = exc.args
+                    kw = exc.kwargs
                 
     def __str__(self):
         return str(self.chain)

IPython/ipapi.py

@@ -66,9 +66,15 b' class TryNext(Exception):'
      
      Raise this in your hook function to indicate that the next
      hook handler should be used to handle the operation.
+     If you pass arguments to the constructor those arguments will be
+     used by the next hook instead of the original ones.
     """
- 
-   
+
+    def __init__(self, *args, **kwargs):
+        self.args = args
+        self.kwargs = kwargs
+
+
 # contains the most recently instantiated IPApi
 _recent = None