[svn:externals] directive is not being parsed correctly

[marijn]

How to Reproduce

While doing a GET operation on /browser, Trac issued an internal error.

I tried to map my svn:external definition to another trac browser with the following directive in trac.ini:

[svn:externals]
1 = http://svn.symfony-project.com http://trac.symfony-project.org/browser/$path?rev=$rev

This results in the error described below. The error only occurs if the repository external definition from trac.ini is found in the repository structure.

Request parameters:

{'path': '/'}

User Agent was: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10_4_11; en) AppleWebKit/525.18 (KHTML, like Gecko) Version/3.1.2 Safari/525.22

System Information

Trac	0.11.1
Python	2.4.3 (#1, May 24 2008, 13:47:28) [GCC 4.1.2 20070626 (Red Hat 4.1.2-14)]
setuptools	0.6c9
SQLite	3.3.6
pysqlite	1.1.7
Genshi	0.5.1
mod_python	3.2.8
Subversion	1.4.2 (r22196)
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/web/main.py", line 423, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/web/main.py", line 197, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/versioncontrol/web_ui/browser.py", line 359, in process_request
    node.get_properties()),
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/versioncontrol/web_ui/browser.py", line 548, in render_properties
    return filter(None, [self.render_property(name, mode, context, props)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/versioncontrol/web_ui/browser.py", line 560, in render_property
    rendered = renderer.render_property(name, mode, context, props)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/versioncontrol/svn_fs.py", line 315, in render_property
    return self._render_externals(props[name])
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/versioncontrol/svn_fs.py", line 358, in _render_externals
    remotepath = posixpath.join(*reversed(prefix))
TypeError: join() takes at least 1 argument (0 given)

[cboos]

I can't test the svn stuff at the moment, but could you please try the following patch?

trac/versioncontrol/svn_fs.py

@@ -355 +355 @@
                              url.startswith('https://')):
                 href = url.replace('%', '%%')
             if href:
-                remotepath = posixpath.join(*reversed(prefix))
+                remotepath = ''
+                if prefix:
+                    remotepath = posixpath.join(*reversed(prefix))
                 externals.append((localpath, revstr, base_url, remotepath,
                                   href % {'path': remotepath, 'rev': rev}))
             else:

[anonymous]

Thanks for the patch. this works for me.

[ebray]

Don't close the ticket if the fix hasn't been applied in the repository yet.

[cboos]

The fix will be applied after the 0.11.2.1 release.

[cboos]

Patch applied in r7723.