extern void select_source_symtab (struct symtab *);
+extern char **default_make_symbol_completion_list_break_on
+ (char *text, char *word, const char *break_on);
extern char **default_make_symbol_completion_list (char *, char *);
extern char **make_symbol_completion_list (char *, char *);
extern char **make_symbol_completion_list_fn (struct cmd_list_element *,