Re: Mercurial vs Updated git HOWTO for kernel hackers

[Andrew Thompson]

Petr Baudis wrote:
> > Mercurial's undo is taking a snapshot of all the changed file's repo file length
> > at every commit or pull.  It just truncate the file to original size and undo 
> > is done.
>
> "Trunactes"? That sounds very wrong... you mean replace with old
> version? Anyway, what if the file has same length? It just doesn't make
> much sense to me.

I believe this works because the files stored in a binary format that 
appends new changesets onto the end. Thus, truncating the new stuff from 
the end effectively removes the commit.

--
Andrew Thompson
http://aktzero.com/
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