Re: Reverse patching

On Fri, 2009-12-04 at 14:34 +1100, Martin Pool wrote:
> 2009/12/4 Afsheen Ghorashy <[email protected]>:
> > Hello,
> > I'm trying to apply rdiff (a very impressive program, so far) to a
> > certain situation and I have some questions about its use and functioning:
> > 1) Is there anyway to 'reverse-patch'.  If I produce a delta for file1
> > to file2, I know I can apply the delta to file1 to obtain file2; can I
> > also apply the delta, in some way, to file2 to get file 1? (similar to
> > "patch -R")
> 
> No.

The reason why makes it obvious... the patch includes any extra data
found in file2 that is not found in file1... it does not include any
data that is found in file1 that is not in file2.

-- 
Donovan Baarda <[email protected]>
http://minkirri.apana.org.au/~abo/


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