X-PTS_FILT
Arguments: exp &optional c-imp vmapupper vmaplower vmapinternal cmapupper cmaplower cmapinternal [generic-function]
Filtering sequences of selected points in objects. Constrains a given points in consecutive objects to match
a given pattern.
For example, interpreting objects as chords, the expression (0_5 (u (not (or (60 ? 65) (72 77 72))))) constraints the
first six chords so that the upper voice never contains pitches 60 and 65
separated by some other pitch, neither the sequence of pitches 72 77 72
first six chords so that the upper voice never contains pitches 60 and 65
separated by some other pitch, neither the sequence of pitches 72 77 72
