- added a test to proove that the 1.0.5 release breakage as of

  https://bugs.launchpad.net/zc.buildout/+bug/239212 is indeed solved
  in trunk

- fixed the test for the += -= syntax change.

CHANGES.txt

@@ -7,6 +7,14 @@ Change History
 1.0.6 (unreleased)
 ==================
 
+- fixed the test for the += -= syntax in buildout.txt as the test
+  was actually wronng. The original implementation did a split/join
+  on whitespace, and later on that was corrected to respect the original
+  EOL setting, the test was not updated, though. (seletz)
+
+- added a test to verify against https://bugs.launchpad.net/zc.buildout/+bug/239212
+  in allowhosts.txt (seletz)
+
 - further fixes for """AttributeError: Buildout instance has no 
   attribute '_logger'""" by providing reasonable defaults 
   within the Buildout constructor (related to the new 'allow-hosts' option)

src/zc/buildout/allowhosts.txt

@@ -106,4 +106,32 @@ Now we can run the buildout and make sure all attempts to dist.plone.org fails::
     Error: Couldn't find a distribution for 'kss.core'.
     <BLANKLINE>
 
+Test for issues
+---------------
 
+Test for 1.0.5 breakage as in https://bugs.launchpad.net/zc.buildout/+bug/239212::
+
+    >>> write(sample_buildout, 'buildout.cfg',
+    ... '''
+    ... [buildout]
+    ... parts=
+    ...     python
+    ...      
+    ... foo = ${python:interpreter}
+    ...      
+    ... [python]
+    ... recipe=zc.recipe.egg
+    ... eggs=ipython
+    ... interpreter=python
+    ... ''')
+    >>> print system(buildout)
+    Unused options for buildout: 'foo'.
+    Installing python.
+    Getting distribution for 'ipython'.
+    Got ipython 0.8.3.
+    Generated script 'bin/ipython'.
+    Generated script 'bin/pycolor'.
+    Generated interpreter 'bin/python'.
+    <BLANKLINE>
+
+The bug 239212 above would have got us an *AttrubuteError* on *buildout._allow_hosts*.

src/zc/buildout/buildout.txt

@@ -1018,7 +1018,7 @@ Verify option values.
     ... """)
 
     >>> print system(os.path.join('bin', 'buildout')),
-    ['a1/na2/na3/na4/na5', 'b4', 'c1/nc2/nc3/nc4/nc5', 'h1 h2']
+    ['a1 a2/na3 a4/na5', 'b1 b2 b3 b4', 'c1 c2/nc3 c4 c5', 'h1 h2']
     Develop: '/sample-buildout/demo'
 
 Cleanup.