extern const char git_more_info_string[];
extern void list_common_cmds_help(void);
-extern void help_unknown_cmd(const char *cmd);
+extern const char *help_unknown_cmd(const char *cmd);
extern void prune_packed_objects(int);
extern int read_line_with_nul(char *buf, int size, FILE *file);
extern int fmt_merge_msg(int merge_summary, struct strbuf *in,
struct strbuf *out);
extern int commit_tree(const char *msg, unsigned char *tree,
struct commit_list *parents, unsigned char *ret);
+extern int check_pager_config(const char *cmd);
extern int cmd_add(int argc, const char **argv, const char *prefix);
extern int cmd_annotate(int argc, const char **argv, const char *prefix);