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Re: feature request: append to last commit

From: <holger.engels_at_mercatis.com>
Date: 2006-10-14 18:46:45 CEST

Ben,

thanks for your reply. I was aware of the potential consistency
problem, that'd occur, if sombody "did an 'svn update' to r90 during
that two-minute window". Thus I'd proposed to allow it only, if there
was no read access meanwhile.

However, you're right. Branching is an alternative!

Regards,

Holger

Quoting Ben Collins-Sussman <sussman@red-bean.com>:

> Unfortunately, this proposal goes against a fundamental design
> principle of subversion -- tha revisions are immutable.
>
> Suppose you commit revision 90, and then do a 'amendatory' commit to
> revision 90 a couple of minutes later. But suppose somebody else did
> an 'svn update' to r90 during that two-minute window. Now their
> client has a different definition of r90 than somebody who runs 'svn
> update' *after* the ammendatory commit. The former working copy is
> going to get a big checksum error when the try to update to r91 later
> on.
>
> If you're really worried about having the code always be in 'perfect'
> state, then use branches. That's what they're for. Let the trunk be
> unstable, and then port ranges of commits to a 'stable' branch
> whenever the trunk is consistent. This guarantees that the branch
> will *always* be stable.

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Received on Sat Oct 14 18:47:07 2006

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