al_ustr_find_replace - Man Page

#include <allegro5/allegro.h>

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

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_cstr(3)

al_ustr_find_replace_cstr(3), al_ustr_find_str(3).