+ * Revision 1.21 1996-10-29 14:00:03 adam
+ * Page size given by DICT_DEFAULT_PAGESIZE in dict.h.
+ *
+ * Revision 1.20 1996/03/20 09:35:16 adam
+ * Function dict_lookup_grep got extra parameter, init_pos, which marks
+ * from which position in pattern approximate pattern matching should occur.
+ *
+ * Revision 1.19 1996/02/02 13:43:50 adam
+ * The public functions simply use char instead of Dict_char to represent
+ * search strings. Dict_char is used internally only.
+ *
+ * Revision 1.18 1996/02/01 20:39:52 adam
+ * Bug fix: insert didn't work on 8-bit characters due to unsigned char
+ * compares in dict_strcmp (strcmp) and signed Dict_char. Dict_char is
+ * unsigned now.
+ *
+ * Revision 1.17 1995/12/06 17:48:30 adam
+ * Bug fix: delete didn't work.
+ *
+ * Revision 1.16 1995/10/09 16:18:31 adam
+ * Function dict_lookup_grep got extra client data parameter.
+ *
+ * Revision 1.15 1995/09/04 12:33:31 adam
+ * Various cleanup. YAZ util used instead.
+ *
+ * Revision 1.14 1994/10/04 17:46:55 adam
+ * Function options now returns arg with error option.
+ *
+ * Revision 1.13 1994/10/04 12:08:05 adam
+ * Some bug fixes and some optimizations.
+ *
+ * Revision 1.12 1994/10/03 17:23:03 adam
+ * First version of dictionary lookup with regular expressions and errors.
+ *
+ * Revision 1.11 1994/09/28 13:07:09 adam
+ * Use log_mask_str now.
+ *
+ * Revision 1.10 1994/09/26 10:17:24 adam
+ * Minor changes.
+ *
+ * Revision 1.9 1994/09/22 14:43:56 adam