Re: [Gnu-arch-users] Some issues

[Matthieu Moy]

Andrew Suffield <address@hidden> writes:

>> Well, xdelta ( http://www.xcf.berkeley.edu/~jmacd/xdelta.html )
>> already handles binary files rather well ... 
>
> Any idiot can write a diff, it's just an extension of the LCS
> algorithm - all you have to do is define the alphabet, then cut the
> code.
>
> The hard part is writing a patch. xdelta has no such equivalent. 

I  suppose you mean  "a patch  able to  apply a  patch to  a different
version of the original file". Clearly this is not a solved problem.

> The only thing it does is delta-compression. tla has no real use for
> that. 

If you have a 1MB binary file managed by arch, all revisions modifying
even a single bit of this  file will contain the full binary. You will
quickly end up with a 100Mb archive.

You may  not find usefull  to reduce the  size of your archive  and of
your changesets in this situation, but I do. 

-- 
Matthieu