use_copy         3414 src/diffviewer/ydiff.c     use_copy##n = 0; \
use_copy         3421 src/diffviewer/ydiff.c             use_copy##n = 1; \
use_copy         3423 src/diffviewer/ydiff.c                 use_copy##n = -1; \
use_copy         3432 src/diffviewer/ydiff.c     if (use_copy##n != 0) \
use_copy         3435 src/diffviewer/ydiff.c         if (use_copy##n > 0) \