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diff --git a/src/math/ChangeLog b/src/math/ChangeLog
index 0c834cb0..c78f51a8 100644
--- a/src/math/ChangeLog
+++ b/src/math/ChangeLog
@@ -1,3 +1,21 @@
+Wed May  3 23:06:43 2006  Ben Pfaff  <blp@gnu.org>
+
+	Continue reforming procedure execution.  In this phase, get rid of
+	many global variables, consolidating procedure execution in
+	procedure.c.  Encapsulate transformations in new "struct
+	trns_chain".  Also, change implementation of N OF CASES, FILTER,
+	and PROCESS IF from special cases to transformations.
+	 
+	* sort.c: (prepare_to_sort_active_file) Don't run a procedure
+	here.
+	(sort_active_file_in_place) Rewrite to run a procedure, capture
+	the output, sort the output, and set that as the source for the
+	next procedure.
+	(struct sort_to_casefile_cb_data) New structure.
+	(sort_to_casefile_callback) New function.
+	(sort_active_file_to_casefile) Rewrite to use
+	multipass_procedure().
+
 Sat Apr 29 11:09:33 WST 2006 John Darrington <john@darrington.wattle.id.au>
 
 	* removed unused variable.