bzr+http fails when a redirect occurs

[Jakob]

This is yet another bug regarding redirection going wrong; it seems similar to at least #245964 and #265070 and probably to more.
When trying the following command:
  bzr revno bzr+http://www.astro.rug.nl/~jakobb/bzr_repos/repos1
The following error occurs:

  PathNotChild: Path "http://www.astro.rug.nl/%7Ejakobb/bzr_repos/repos1/.bzr/smart" is not a child of path "bzr+http://www.astro.rug.nl/%7Ejakobb/bzr_repos/repos1/": scheme mismatch

The full traceback is here: http://paste.ubuntu.com/47410/
This seems to be precisely the same problem that happens in #265070, where relpath() is not functioning right, except that now the scheme causes the error, instead of the user in the url. If I were to include the user here, you get - as expected:

  bzr: ERROR: bzrlib.errors.PathNotChild: Path "http://www.astro.rug.nl/%7Ejakobb/bzr_repos/repos1/.bzr/smart" is not a child of path "bzr+http://<email address hidden>/%7Ejakobb/bzr_repos/repos1/": scheme mismatch, user name mismatch

Note that this behaviour doesn't depend on the particular command. Any command that tries to access the remote branch will cause this behaviour. This is true for all versions of bzr at least >= 1.5
The significant part from bzr.log is here: http://paste.ubuntu.com/47414/

[Jakob (jakobsybren)]

Aaah, I forgot to mention. This problem occurs because all .astro.rug.nl-addresses are redirected to .intra.astro.rug.nl on systems inside the institute. Nevertheless, precisely the same problems occur when the http:// is redirected to a https://

[Jakob (jakobsybren)]

bug 129307 could be related as well?

[Vincent Ladeuil (vila)]

yes, bug #129307 is related.