Diff output from a rewrite of a function

["Ilpo Järvinen" <ilpo.jarvinen@helsinki.fi>]

Hi,

I have a C source file in which couple of functions are fully rewritten 
(only a part of the file), almost no real similarities (block closing 
parents will obviously match still and couple of other keyword lines here 
and there). I wonder if there is way to produce diff that does not get 
confused by the empty lines / identical lines that are present in both 
original and the modified version. Default diff output is very bad looking 
(IMHO) because these identical lines cause a "synchronization point" to 
occur, that is, each identical line of the original is not considered as 
+/- but left as is. Thus I have something like 3-6 add+del blocks per 
function with a part of the change rather than e.g., one block per 
function or so... I found -B from man git-diff-files, but I guess 
"complete rewrite changes" means whole files as it did do anything.

Any ideas?

I'm currently using 1.4.2, if that's significant.

-- 
 i.

ps. Please cc me when replying.