use_copy         3410 src/diffviewer/ydiff.c     use_copy##n = 0; \
use_copy         3417 src/diffviewer/ydiff.c             use_copy##n = 1; \
use_copy         3419 src/diffviewer/ydiff.c                 use_copy##n = -1; \
use_copy         3428 src/diffviewer/ydiff.c     if (use_copy##n != 0) \
use_copy         3431 src/diffviewer/ydiff.c         if (use_copy##n > 0) \