From: H. Peter Anvin <hpa@zytor.com>
Date: Mon, 21 Nov 2005 21:01:30 GMT
Subject: Re: Pure renames/copies
Message-ID: <438235AA.8070805@zytor.com>
In-Reply-To: <7vacfxrdao.fsf@assigned-by-dhcp.cox.net>

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