use_copy         3483 src/diffviewer/ydiff.c     use_copy##n = 0; \
use_copy         3490 src/diffviewer/ydiff.c             use_copy##n = 1; \
use_copy         3492 src/diffviewer/ydiff.c                 use_copy##n = -1; \
use_copy         3501 src/diffviewer/ydiff.c     if (use_copy##n) \
use_copy         3504 src/diffviewer/ydiff.c         if (use_copy##n > 0) \