1al_ustr_prev(3)                                                al_ustr_prev(3)
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NAME

6       al_ustr_prev - Allegro 5 API
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SYNOPSIS

9              #include <allegro5/allegro.h>
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11              bool al_ustr_prev(const ALLEGRO_USTR *us, int *pos)
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DESCRIPTION

14       Find the byte offset of the previous code point in string, before *pos.
15       *pos does not have to be at the beginning of  a  code  point.   Returns
16       true on success, and the value pointed to by pos will be updated to the
17       found offset.  Otherwise returns false if *pos was already at  the  end
18       of the string, and *pos is unmodified.
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20       This  function  just looks for an appropriate byte; it doesn't check if
21       found offset is the beginning of a valid code point.  If you are  work‐
22       ing  with  possibly  invalid UTF-8 strings then it could skip over some
23       invalid bytes.
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SEE ALSO

26       al_ustr_next(3)
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30Allegro reference manual                                       al_ustr_prev(3)