+2008-05-15 Ben Pfaff <blp@gnu.org>
+
+ Patch #6512.
+
+ * evaluate.c (expr_evaluate): Use gsl_finite instead of finite, as
+ a stopgap measure for portability until appropriate gnulib modules
+ are available.
+
+ * helpers.h (copy_string): Ditto.
+
+2007-10-12 Ben Pfaff <blp@gnu.org>
+
+ Patch #6224.
+
+ * helpers.c: Don't need our own trunc function implementation
+ anymore, since we now use the one from gnulib.
+
+2007-07-17 Ben Pfaff <blp@gnu.org>
+
+ Patch #19335. Reviewed by John Darrington.
+
+ * evaluate.h.pl: Use strict and all warnings. Fix warnings that
+ this triggers.
+
+ * evaluate.inc.pl: Ditto.
+
+ * generate.pl: Ditto.
+
+ * operations.h.pl: Ditto.
+
+ * optimize.inc.pl: Ditto.
+
+ * parse.inc.pl: Ditto.
+
+2007-04-15 Ben Pfaff <blp@gnu.org>
+
+ * parse.c (expr_get_function): New function.
+ (expr_get_function_cnt): New function.
+ (expr_operation_get_name): New function.
+ (expr_operation_get_prototype): New function.
+ (expr_operation_get_arg_cnt): New function.
+
+Thu Feb 1 06:59:27 2007 Ben Pfaff <blp@gnu.org>
+
+ * parse.c (parse_function): Accept TO in any case for use with
+ n-ary functions. Fixes bug #18923. Thanks to John Darrington for
+ reporting this bug.
+
+Sat Dec 16 12:20:14 2006 Ben Pfaff <blp@gnu.org>
+
+ * operations.def: Reverse order of arguments to DATEDIFF, for
+ compatibility. Thanks to Daniel Williams
+ <Daniel.E.Williams@state.or.us> for reporting this bug.
+
+Wed Dec 13 19:30:26 2006 Ben Pfaff <blp@gnu.org>
+
+ Implement support for DATESUM, DATEDIFF expression functions. See
+ patch #5637.
+
+ * helpers.c (enum date_unit): New enum.
+ [!HAVE_TRUNC] (trunc): New function.
+ (recognize_unit): New function.
+ (year_diff): New function.
+ (month_diff): New function.
+ (quarter_diff): New function.
+ (date_unit_duration): New function.
+ (expr_date_difference): New function.
+ (enum date_sum_method): New function.
+ (recognize_method): New function.
+ (add_months): New function.
+ (expr_date_sum): New function.
+
+ * operations.def: Implement DATESUM, DATEDIFF functions. Mark
+ VALUELABEL no_abbrev.
+
+Sun Dec 10 16:49:33 2006 Ben Pfaff <blp@gnu.org>
+
+ * operations.def: Implement VALUELABEL function. Add DATEDIFF,
+ DATESUM unimplemented stubs.
+
+ * parse.c (type_coercion_core): Add support for OP_var type, which
+ is a name for a numeric or string variable.
+ (is_compatible) New function.
+ (check_operator) Only require values to be compatible with their
+ expected types, not identical.
+ (is_valid_node) Ditto.
+ (compare_names) Always return mismatch if the command name can't
+ be abbreviated.
+ (lookup_function_helper) Pass the new OPF_NO_ABBREV flag to the
+ comparison function.
+
+ * generate.pl (init_all_types): Add support for a type just called
+ "var" that may be a numeric or string variable name. Also, add a
+ no_abbrev option that prevents a function name from being
+ abbreviated (in case of naming conflict otherwise).
+
+ * parse.inc.pl: Output OPF_NO_ABBREV flag.
+
+ * private.h: Add OPF_NO_ABBREV flag.
+
+Wed Jul 12 21:03:17 2006 Ben Pfaff <blp@gnu.org>
+
+ * evaluate.c (cmd_debug_evaluate): Don't try to resize a null
+ case.
+
+Fri Jun 9 13:59:15 2006 Ben Pfaff <blp@gnu.org>
+
+ Reform string library.
+
+ * generate.pl (init_all_types): `struct fixed_string' is now
+ `struct substring'.
+
+Sun May 7 10:05:42 WST 2006 John Darrington <john@darrington.wattle.id.au>
+
+ * evaluate.c: Removed call to copy_mangle, and replaced with the
+ original buf_copy_rpad.
+
Mon May 1 15:11:48 2006 Ben Pfaff <blp@gnu.org>
Prohibit LAG following TEMPORARY. This both matches SPSS behavior