Re: Mercurial vs Updated git HOWTO for kernel hackers

Petr Baudis wrote:

quoted

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/