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RE: Update to revision always updates externals to HEAD

From: Bruce J Clark <BJClark_at_metrol.co.uk>
Date: Fri, 2 Dec 2016 13:08:01 +0000


If neither revision is specified, it is effectively an operative revision of HEAD. In that case, the search starts with the HEAD of the repo, it THEN gets the path. If the path doesn't exist in the HEAD, it won't be found, resulting in a path not found error. The extern needs to start the search with a revision where the path existed - a peg revision can do just that.

I always set the peg revision for my externals to ensure that if I checkout a particular revision of the main repo, I'm always building the same code. Without a specified revision for the extern, checking out the same revision from the main repo at different times will generate different results (because the externs could be different).

As I said, the Subversion Red Book probably explains it better than me, and there's always the risk that I'm wrong. [However, it is based on having a similar issue and trying to overcome it.]


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-----Original Message-----
From: Olivier Sannier [mailto:obones_at_free.fr]
Sent: 02 December 2016 12:59
To: users_at_tortoisesvn.tigris.org
Subject: Re: Update to revision always updates externals to HEAD

Bruce J Clark wrote:
> Hi,
> That sounds like a classic Subversion issue, rather than an issue with TortoiseSVN. If so, the topic you want to research is Subversion peg and operative revisions. Try looking at the Subversion Red Book (http://svnbook.red-bean.com/en/1.7/svn.advanced.pegrevs.html).
Thanks for this, but none of the externals are tied to a particular revision, neither peg nor operative.
This is why I find this behavior quite surprising.


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Received on 2016-12-02 14:08:19 CET

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