al_ustr_find_replace - Allegro 5 API

       Replace  all occurrences of find in us with replace, beginning at byte offset start_pos.  The find string
       must be non-empty.  Returns true on success, false on error.

       al_ustr_find_replace - Allegro 5 API

al_ustr_find_replace_cstr(3alleg5)

Allegro reference manual                                                           al_ustr_find_replace(3alleg5)

              #include <allegro5/allegro.h>

              bool al_ustr_find_replace(ALLEGRO_USTR *us, int start_pos,
                 const ALLEGRO_USTR *find, const ALLEGRO_USTR *replace)