[jira] [Created] (SVN-4883) multi-wc-format

["Julian Foad (Jira)" <ji...@apache.org>]

Julian Foad created SVN-4883:
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             Summary: multi-wc-format
                 Key: SVN-4883
                 URL: https://issues.apache.org/jira/browse/SVN-4883
             Project: Subversion
          Issue Type: Improvement
    Affects Versions: 1.14.0
            Reporter: Julian Foad


Allow a new version of the Subversion client to work on a WC that uses an older format, without upgrading that WC to the newest format the client knows.

Concrete example (currently hypothetical):
 * if a v1.15 client were to support this feature, it could be made compatible with both the WC format used from Subversion 1.8 to 1.14 ("WC format 31") and a new format that would be introduced at the same time in 1.15 ("WC format 32").

This will allow the user to:
 * use the new client and an old client against the same (old-format) WC
 * use the new client's new features with a (new-format) WC

An implementation of this was recently merged into trunk. It was was developed on a branch named 'multi-wc-format'.

UI exposure of this feature includes:
 * 'svn checkout' and 'svn upgrade' default to the oldest compatible WC format.
 * 'svn checkout' and 'svn upgrade' accept an option such as '--compatible-version=1.15' to request a newer format.



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