BUF_COMPACT       611 src/buffer.c     BUF_COMPACT (b) = 1;
BUF_COMPACT      1807 src/buffer.c         && (BUF_COMPACT (buffer) != BUF_MODIFF (buffer)))
BUF_COMPACT      1828 src/buffer.c         BUF_COMPACT (buffer) = BUF_MODIFF (buffer);