int al_ustr_find_set(const ALLEGRO_USTR *us, int start_pos,
   const ALLEGRO_USTR *accept)
Introduced in 5.0.0

This function finds the first code point in us, beginning from byte offset start_pos, that matches any code point in accept. Returns the position if a code point was found. Otherwise returns -1.

See also: al_ustr_find_set_cstr, al_ustr_find_cset

Examples: ex_utf8

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