Re: Pure renames/copies

["H. Peter Anvin" <hpa@zytor.com>]

Junio C Hamano wrote:
> Linus Torvalds <torvalds@osdl.org> writes:
> 
> 
>>Of course, arguably "-M100" should really do this optimization for you. 
>>Junio?
> 
> 
> Probably something like this would suffice.
> 
> -- >8 --
> Subject: rename detection with -M100 means "exact renames only".
> 
> When the user is interested in pure renames, there is no point
> doing the similarity scores.  This changes the score argument
> parsing to special case -M100 (otherwise, it is a precision
> scaled value 0 <= v < 1 and would mean 0.1, not 1.0 --- if you
> do mean 0.1, you can say -M1), and optimizes the diffcore_rename
> transformation to only look at pure renames in that case.
> 

Any reason we can't make it take an actual decimal number, like -M1.0 or 
-M0.345?  It seems odd and annoying to invent our own notation for 
floating-point numbers, especially in userspace.

	-hpa