A bit more of Mutopia statistics: 4157 .ly files on Mutopia don't use << \\ >> 1130 .ly files on Mutopia do 307 of the latter have only one \\, so the can't be affected by a change The other 823 possible could be affected but most of them use only two voices in one construct but several such constructs.
By the way, the top position with 369 double backslashes is this piece: https://github.com/MutopiaProject/MutopiaProject/blob/master/ftp/BachJS/BWV830/BWV-830/BWV-830-lys/BWV-830.ly Here is the full statistics: #\\ #files 0 4157 1 307 2 178 3 87 4 72 5 54 6 51 7 30 8 40 9 29 10 28 11 14 12 19 13 14 14 21 15 4 16 17 17 10 18 8 19 8 20 12 21 12 22 4 23 3 24 4 25 10 26 7 27 5 28 4 29 5 30 1 31 5 32 3 33 3 34 2 35 3 36 6 37 2 38 1 39 1 40 2 41 1 42 1 45 1 46 1 47 5 48 1 49 1 50 1 52 2 53 2 54 3 55 1 56 1 57 1 61 1 62 3 70 1 72 1 76 1 88 1 93 1 96 1 103 1 107 1 114 1 116 1 119 1 121 1 140 1 151 1 153 1 171 1 218 1 369 1 Sum 5287 _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user