svn:externals: same relative path to different repository

[Tyler Mace <tw...@thermoanalytics.com>]

As a previous CVS outfit, we've used the cvs2svn to bring all our 
modules to SVN. We did this 4 or so years ago, and we've been chuging 
along with SVN ever since.

But using the old metaphore of different CVS modules to achieve a 
similar product, we've had to parallel-branch, using svn:externals 
definitions. We find this work to be more than it's worth, and when 1.5 
came out with relative paths in svn-externals definitions, we were 
excited about what was coming.

The release fell far short. I was hoping to define an svn:externals to 
say, "use the same relative path to this URL in a different repository." 
For example, if my "foo" trunk had an externals defined to the "bar" 
repository, I'd like to branch both "foo" and "bar",  and when I check 
out "foo" I want the "bar" reference to use the relative path that was 
assigned to "foo."

I hear echos of this same desire at the bottom of bug 1336.

Here's my suggestion, in the form of shell text. I just used a "$" 
symbol below to define that "same relative path..." This "$" is to 
compare with the ^ used for the beginning of a URL definition.
> twm@twmpc 146 /work/foo-repo> svn propset svn:externals 
> "svn://gauss/bar-repo/$ bar" .
> property 'svn:externals' set on '.'
>
> twm@twmpc 147 /work/foo-repo> svn ci
> Sending        .
>
> Committed revision 15.
> twm@twmpc 149 /work/foo-repo> svn copy svn://gauss/foo-repo/trunk 
> svn://gauss/foo-repo/branches/foo -m "This is designed for testing"
>
> Committed revision 16.
> twm@twmpc 150 /work/foo-repo> svn copy svn://gauss/bar-repo/trunk 
> svn://gauss/bar-repo/branches/foo -m "This is designed for testing"
>
> Committed revision 77.
> twm@twmpc 151 /work/foo-repo> svn switch svn://gauss/foo-repo/branches/foo
> At revision 16.
> twm@twmpc 152 /work/foo-repo> svn up
> svn: warning: Error handling externals definition for 'bar':
> svn: warning: URL 'svn://gauss/bar-repo/$' at revision 77 doesn't exist
> At revision 16.

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