Re: [PATCH] count-delta.c: Match the delta data semantics change in version 3.

[Nicolas Pitre <nico@cam.org>]

On Thu, 9 Feb 2006, Nicolas Pitre wrote:

> On Thu, 9 Feb 2006, Junio C Hamano wrote:
> 
> > Junio C Hamano <junkio@cox.net> writes:
> > 
> > > The bit is however _already_ looked at by the count_delta(),
> > > to assess the extent of damage, IIRC.  Should we be
> > > futureproofing that bit as well?
> > 
> > Something like this?
> 
> Right.

I'm not sure to fully understand what you meant in the comment below. 
but if it was related to the removed code, maybe this patch would make 
sense:

diff --git a/count-delta.c b/count-delta.c
index 978a60c..058a2aa 100644
--- a/count-delta.c
+++ b/count-delta.c
@@ -16,11 +16,7 @@
  *
  * Number of bytes that are _not_ copied from the source is deletion,
  * and number of inserted literal bytes are addition, so sum of them
- * is the extent of damage.  xdelta can express an edit that copies
- * data inside of the destination which originally came from the
- * source.  We do not count that in the following routine, so we are
- * undercounting the source material that remains in the final output
- * that way.
+ * is the extent of damage.
  */
 int count_delta(void *delta_buf, unsigned long delta_size,
 		unsigned long *src_copied, unsigned long *literal_added)