Zope changes

  This file contains change information for the current Zope release. 
  Change information for previous versions of Zope can be found in the
  file HISTORY.txt.

    Zope 2.2.4 beta 1

        - Zope 2.2.4 includes all of the 2.2.3 changes plus a fix 
          for a bug introduced while fixing another bug that caused 
          acquisition of permissions to fail (whew!). 

        - Fixed a bug in computation of object roles (from
          permissions) that could cause roles to come from
          non-containment context.

        - ImageFile objects (e.g. icons in the mgmt interface) did 
          not set or recognize HTTP caching headers, which caused 
          some browsers to never cache them.

        - The function rfc1123_date was mis-formatting http dates.

        - The registerHelp() method of ProductContext objects would 
          blow up if a product did not have a help directory.

    Zope 2.2.3

     Bugs fixed

        - Resolved known condition in the Catalog where objects are
          not guaranteed to be unindexed before indexing happens
	  again.  Now objects are guaranteed to be unindexed correctly
	  first.  This should resolve all outstanding KeyErrors with
	  Catalog, although currently broken Catalogs will require a
	  reindex to resolve them. 

        - Fixed a race condition and a possible memory leak in mounted
          databases.

        - Added the DTML Reference to the online help system.

        - Applied Toby Dickenson's patch that fixes aq_inContextOf.
          Now it is more thorough in discerning whether an object is in
          the context of another object.

        - Fixed keyword args for aq_acquire.

        - Plugged a memory leak that occurred when objects wrapped
          through acquisition but which do not have a "__call__"
          method are invoked.  The arguments passed to the call
          would be leaked.

        - DateTime did not recognize timezone strings like '+0200'.

        - Security for Images and Files could not be changed due to 
          an old name left in the permissions structure (__call__).

        - Removed some ancient references to Principia from the ZGadflyDA
          user interface.

        - Fixed bug in Client.py which opened filesystem file without
          using read-binary mode, which caused file corruption
          when uploading binary files using ZPublisher.Client
          from Windows NT.

        - The '_getOb' method of ObjectManagers did not correctly 
          restrict access to private attributes (beginning with an 
          '_').

        - The XML import/export machinery was fixed to properly deal
          with 'long' datatypes.

        - Uploading new contents for a File or Image object without a 
          content-type header caused the old (possibly now incorrect) 
          content_type attribute to be retained.

        - There was an extra slash in the rewrite rule for using PCGI
          in single-threaded mode in WEBSERVERS.txt

        - The PARENTS list passed to the validate method of User Folders 
          did not include the published object, which could lead to 
          incorrect security handling in certain cases (this was the 
          2000-10-02 Hotfix).

        - (Collector #1687) Products which register base classes
          for ZClasses typically defer creating them until product
          registration;  the derived ZClass needs them to be available
          immediately after import.  Deprecated
          'ProductContext.registerZClass' and
          'ProductContext.registerBaseClass' in favor of a new function,
          'ZClasses.createZClassForBase' (because none of the machinery
          needed a ProductContext instance anyway).  Update OFSP and
          ZCatalog products to use this machinery, instead of
          'registerBaseClass'.

        - The manage_edit of the Connection base class used by database 
          connection tried to coerce the connection string to an actual 
          string. This was problematic because some DAs (Sybase apparently) 
          store the connection string as an HTTPRequest.record object.

        - BASE tags generated by Zope were not XHTML compliant.

        - Part of the PropertyManager interface incorrectly assumed a 
          wrapped object.

        - HTTP date headers were generated by strftime in medusa; this 
          meant that using a different locale caused medusa to generate 
          invalide Date headers re: the RFC. The date header generation
          has been changed to use english even if a different locale is 
          in effect.

        - Dates generated by WebDAV code also used strftime and were 
          therefore made invalid when a non-english locale was in use.

        - Headings generated in HTML by StructuredText did not generate 
          a closing paragraph tag.

        - StructuredText did not recognize URLs with ampersands in them.

        - A bit of the SecurityManagement code expected threads to be 
          available, which broke the "single-threaded-mode" that some 
          folks use with pcgi.

        - DateTime arithmetic was broken if you tried to subtract a 
          DateTime from another DateTime where one of them was on 
          daylight savings time and the other was not.

        - The infamous "__call__" bug that could surface in situations 
          where documents called other documents has been stamped out. 
          And there was much rejoicing.

        - The redirect target after adding a ZSQLMethod had too many 
          path elements in it.