/* Likewise, except before POS rather than after POS. */
extern int region_cache_backward (struct buffer *buf, struct region_cache *c,
ptrdiff_t pos, ptrdiff_t *next);
/* Likewise, except before POS rather than after POS. */
extern int region_cache_backward (struct buffer *buf, struct region_cache *c,
ptrdiff_t pos, ptrdiff_t *next);