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diff --git a/src/ChangeLog b/src/ChangeLog
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--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,14 @@
+Wed Apr 26 12:58:46 2006  Ben Pfaff  <blp@gnu.org>
+
+	Improve the way we handle the various parsing "states".  Until now
+	we've hard-coded the state transitions in the command definition
+	file, but that's error-prone and, worse, it's redundant--we can
+	figure out what state we're in anyhow.  We can cleanly handle
+	INPUT PROGRAM and FILE TYPE with a nested command-processing loop.
+	
+	* procedure.c (case_source_is_complex): Removed.
+	(discard_variables) No need to set pgm_state anymore.
+
 Tue Apr 25 11:06:49 2006  Ben Pfaff  <blp@gnu.org>
 
 	Finish reforming error message support.  In this phase, move