use_copy         3418 src/diffviewer/ydiff.c     use_copy##n = 0; \
use_copy         3425 src/diffviewer/ydiff.c             use_copy##n = 1; \
use_copy         3427 src/diffviewer/ydiff.c                 use_copy##n = -1; \
use_copy         3436 src/diffviewer/ydiff.c     if (use_copy##n != 0) \
use_copy         3439 src/diffviewer/ydiff.c         if (use_copy##n > 0) \