Re: mergeinfo on all root files and folders

On Tuesday 26 October 2010, James French wrote:
> We always do merges from the root of the repository.

Sounds weird, how do you do that? This means that either the source and target
URL are the same, which makes this a no-op (unless perhaps when
reverse-merging etc), or the source URL is a child of the target URL, which
means the whole repository root contains itself as a child, i.e. an
infinitely recursive tree.

> When these merges are done svn always marks up the mergeinfo on all first
> level files and folders as well as the root folder itself. Is this working
> as intended? We have had a practice for quite a while, dating back to buggy
> releases where we periodically delete all mergeinfo except for the root of
> the repository.

I have never merged to the repository root, but only to the roots of what we
define here as projects, which use the normal trunk/tags/branches system.

That said, once a child has an explicit mergeinfo, it keeps it during further
merges, which is the reason we only merge to the root of a project. Also note
that the handling of mergeinfo changed in the not-so-recent past, so you
might want to
 * check the versions of all(!) clients and the server
 * check the versions or date of svnadmin used to create the repository
 * check the release info for mergeinfo handling between those versions

At the very least share those versions with us, maybe that would explain
everything already to some of the people here.

> I'm wondering whether I should amend the script to leave the first level
> files and folders intact as it seems that it is impossible to reintegrate a
> branch without these files and folders having the same mergeinfo as the
> root of the repository and in the past I have had to patch in the mergeinfo
> to get reintegrate to work.

You shouldn't have to touch the mergeinfo at all! What you do seems like
workaround that isn't making things better, let alone fixing the actual
problem.

Uli

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