try/except so we need to explicitly check.

for Python 2.2.  This avoids a warning that can be issued during the initial
startup.

- don't pretend directories inside packages are themselves packages if
  they aren't; list them using the "data_files" keyword (this avoids
  noisy warnings for installation and out-of-place building)

together; this matches the way the new-install-branch does this.

and the version being used in the new-install-branch.

avoid disclosing the recipients.

acquisition wrappers, but this time the bugfix is clearer.  The second
argument to an index constructor is usually not "caller"; it's usually
"ignore_ex", which gets stored as a meaningless attribute and ignored.

The bugfix builds upon the ugly code that's already there.  Ugly code
begets ugly code, unfortunately.

        results of a callable.  Do not attempt to index None.

encapsulation the storage lock file.

cleanly.  Backported from ZODB4.

used with Python 2.3.

Python 2.3.

will generate a PendingDeprecationWarning in Python 2.3.

en traversing from a non-mapping object, rather than an obscure AttributeError o
n __getitem__

evaluates to "True". Correct usage is "if find(...) >= 0".

       calling object. This caused caller.getPhysicalPath() to fail for
       indexes depending on this information.

information don't get out of sync.

a bit more readable

        Zope logfiles)

empty lead to an empty index.

     - Collector #816: dtml-sendmail corrupted header if message was
       left blank.

       IISet. This should result in less memory usage.