[x]

1. x11_available
2. x_basename
3. x_error_handler
4. x_io_error_handler
5. xhdr_tab
6. xheader
7. xheader_list_append
8. xheader_list_destroy
9. xmouse_get_event
10. xstrtoumax
11. xtra_key_define_t
12. xx_lowerize_line
13. xx_strchr
14. xx_tolower