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diff --git a/src/libpspp/ChangeLog b/src/libpspp/ChangeLog
index 2dc9e0ba..88955ac4 100644
--- a/src/libpspp/ChangeLog
+++ b/src/libpspp/ChangeLog
@@ -1,3 +1,60 @@
+Sun Apr 16 20:43:35 2006  Ben Pfaff  <blp@gnu.org>
+
+	Continue reforming error message support.  In this phase, we
+	divide the classification of messages along "category" and
+	"severity" axes.
+
+	* message.h: (enum msg_class) Named this set of enumerations.
+	(enum msg_category) New enum: MSG_GENERAL, MSG_SYNTAX, MSG_DATA.
+	(enum msg_severity) New enum: MSG_ERROR, MSG_WARNING, MSG_NOTE.
+	(msg_class_to_category) New inline function.
+	(msg_class_to_severity) New inline function.
+	(msg_class_from_category_and_severity) New inline function.
+	(struct error) Removed `class' member, added `category',
+	`severity'.  Updated all users of this struct to use the new
+	members.
+
+Sun Apr 16 20:33:19 2006  Ben Pfaff  <blp@gnu.org>
+
+	* str.c (ds_vprintf): Don't try to write into the string if it is
+	null.
+
+Sun Apr 16 18:52:41 2006  Ben Pfaff  <blp@gnu.org>
+
+	GNU standards require "file name" instead of "filename" in
+	documentation.  It's nice for our code to follow the convention
+	too.
+	
+	* message.h: (struct file_locator) Rename filename member to
+	file_name.  Updated all references.
+
+Sun Apr 16 16:05:43 2006  Ben Pfaff  <blp@gnu.org>
+
+	Continue reforming error message support.  In this phase, we get
+	rid of VM() and the other msg() support for "verbosity", replacing
+	it by a new function verbose_msg().
+
+	* message.h: (enum ERR_CLASS_COUNT) Renamed ERR_CLASS_CNT.
+	(enum ERR_CLASS_MASK) Removed.
+	(enum ERR_VERBOSITY_SHIFT) Removed.
+	(enum ERR_VERBOSITY_MASK) Removed.
+	(macro VM) Removed.
+
+Sun Apr 16 11:48:07 2006  Ben Pfaff  <blp@gnu.org>
+
+	Start reforming error message support.  In this phase, we get rid
+	of "installation errors" and change all uses of msg() in the
+	output drivers to uses of error() or error_at_line().
+
+	* message.h: Remove IE, IS enums.
+
+Mon Apr  3 11:10:21 2006  Ben Pfaff  <blp@gnu.org>
+
+	* str.c: (ds_separate) Change interface for cleanliness and
+	consistency with ds_tokenize(), and rewrite to shorten and
+	simplify.  Updated all callers.
+	(ds_tokenize) New function.
+
 Fri Mar 31 10:38:46 2006  Ben Pfaff  <blp@gnu.org>
 
 	Add freaderror() analogous to fwriteerror() in gnulib.