#include "stdc.h"
+/* Flag values for history_control */
+#define HC_IGNSPACE 0x01
+#define HC_IGNDUPS 0x02
+#define HC_ERASEDUPS 0x04
+
+#define HC_IGNBOTH (HC_IGNSPACE|HC_IGNDUPS)
+
extern int remember_on_history;
+extern int enable_history_list; /* value for `set -o history' */
+extern int literal_history; /* controlled by `shopt lithist' */
+extern int force_append_history;
extern int history_lines_this_session;
extern int history_lines_in_file;
extern int history_expansion;
extern int command_oriented_history;
extern int current_command_first_line_saved;
extern int hist_last_line_added;
+extern int hist_last_line_pushed;
# if defined (BANG_HISTORY)
extern int history_expansion_inhibited;