feedback on v 0.6b

[Mathieu Lacage]

hi,

Being close to start a new project, I thought it was time for me to see
if I could go shopping for a new SCM. So far, mercurial seems to be
doing pretty much what I need so I will try to setup a real server to
use it soon. Thanks for this nice piece of software. 

However, here are a few things I found out about mercurial using while
using it for 1h.

1) history
"hg -v history" does the same thing as "hg history -v"
I would much prefer the former to be rejected.

2) tagging
"hg tag existing-tag" seems to succeed and replace the previous tag with
the same name. It might make sense to report an error to the user.

3) if you try to use v0.6b on a repository created with v0.6, most
operations are really really slow. I settled for doing a clone of my
previous v0.6 repository with hg v0.6b and then wiping out the v0.6
repository and replacing it with the cloned version.

regards,
Mathieu
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