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Re: svnmucc: new commands: add and modify/update

From: sebb <sebbaz_at_gmail.com>
Date: Thu, 23 Jul 2020 11:30:24 +0100

On Thu, 23 Jul 2020 at 00:59, Daniel Shahaf <d.s_at_daniel.shahaf.name> wrote:
>
> sebb wrote on Wed, 22 Jul 2020 22:44 +0100:
> > The SVN put command can add a new file or update an existing one.
> >
> > As part of a batch update it may be necessary to ensure that a
> > particular file will be created and not updated - or vice versa.
> > That is currently not at all easy to do, which is a shame as svnmucc
> > is otherwise very useful for writing atomic updates that are not
> > possible with the svn client.
>
> What can svnmucc(1) do that svn(1) can't?

Atomic updates.

AIUI an svnmucc script only succeeds if all the individual commands succeed.

To do that with single commands would require reversion and/or retries.

If the reason for an svn client failure is a network or server issue,
it's going to be very difficult to tidy up.

> > Would there be any support for extending svnmucc to add these operations?
> > Either as options to put, or as separate commands.
>
> The standard solutions for your situation are:
>
> 1.
> - Get HEAD's value as an integer
> - Check file existence/inexistence in that revision
> - Run 'svnmucc -r'
>
> 2.
> svn co --depth=empty $URL wc
> svn up --set-depth=infinity wc/foo
> ⋮
> # (as posted in https://mail-archives.apache.org/mod_mbox/subversion-users/202007.mbox/%3C20200712142604.128f80eb%40tarpaulin.shahaf.local2%3E)
>
> In what ways do they fall short?
>
Received on 2020-07-23 12:30:48 CEST

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