unibi_add_ext_bool, unibi_add_ext_num, unibi_add_ext_str - add extended
capabilities to a terminal object
#include <unibilium.h>
size_t unibi_add_ext_bool(unibi_term *ut, const char *t, int b);
size_t unibi_add_ext_num(unibi_term *ut, const char *t, int v);
size_t unibi_add_ext_str(unibi_term *ut, const char *t, const char *s);
Add an extended boolean, numeric, or string capability with the specified name
and value.
Note that these functions simply store any pointers they are
given. They will not free t or s or copy any strings.
The return value is the index of the new capability, which can be used in
unibi_get_ext_bool(3), unibi_set_ext_bool(3), etc. If an error
occurs, "SIZE_MAX" is returned.
unibilium.h(3), unibi_del_ext_bool(3),
unibi_del_ext_num(3), unibi_del_ext_str(3)