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diff --git a/src/data/ChangeLog b/src/data/ChangeLog
index 9225fa00..396ef1ca 100644
--- a/src/data/ChangeLog
+++ b/src/data/ChangeLog
@@ -1,3 +1,51 @@
+2007-07-22  Ben Pfaff  <blp@gnu.org>
+
+	* sys-file-reader.c (read_variable_to_value_map): Use max_warnings
+	local variable instead of literal 5.
+	
+2007-07-22  Ben Pfaff  <blp@gnu.org>
+
+	Fix problems with uniqueness of short names in system files with
+	very long string variables.  Now a variable may have multiple
+	short names.
+	
+	* automake.mk (src_data_libdata_a_SOURCES): Add new files
+	short-names.c, short-names.h.
+
+	* dictionary.c (dict_clone): Clone all the short names.
+	(compare_strings): Move into short-names.c.
+	(hash_strings): Ditto.
+	(set_var_short_name_suffix): Ditto.
+	(dict_assign_short_names): Ditto, rename short_names_assign,
+	change to assign all short names.
+	
+	* por-file-writer.c (write_variables): Use short_names_assign
+	instead of dict_assign_short_names.
+
+	* short-names.c: New file.
+
+	* short-names.h: New file.
+
+	* sys-file-private.c (sfm_width_to_segments): New function.
+
+	* sys-file-reader.c (read_long_var_name_map): Save and restore all
+	the short names, not just the first one.
+	
+	* sys-file-writer.c (cont_var_name): Removed.
+	(sfm_open_writer): Use short_names_assign instead of
+	dict_assign_short_names.  Use unique short names assigned by
+	short_names_assign instead of those generated by cont_var_name.
+
+	* variable.c (struct variable): Remove `short_name' member,
+	replace by `short_names' and `short_name_cnt'.
+	(var_create) Initialize new members.
+	(var_get_short_name_cnt): New function.
+	(var_get_short_name): Now takes an index argument.  Changed most
+	callers to pass 0.
+	(var_set_short_name): Ditto.
+	(var_clear_short_name): Renamed var_clear_short_names, changed to
+	clear all short names.
+	
 2007-07-22  Ben Pfaff  <blp@gnu.org>
 
 	* variable.c (var_set_width): Use new var_set_width function.