then checking whether it is true.  (Should be slightly faster.)

- Use getAttributeNodeNS() to check for z:omit="" properly.

- The DOMVisitor class is simplified a bit; it doesn't visit
  attributes for you and it doesn't define endVisitElement().

- The CopyingDOMVisitor class is fixed to cope with this; instead of
  endVisitElement() it defines and uses backUp(), with the same
  purpose.  It defines and uses copyAllAttributes() and
  copyAttribute() to deal with attributes.

- The TALVisitor class is refactored so that the processing of METAL
  and TAL attributes is done more orderly (I discovered
  getAttributeNS() :-).

- Used a different way to split parts into semicolon-separated parts
  with doubling used to quote semicolons.

- Sped up the macro indexer by using a recursive function with an
  explicit argument rather than a visitor class.

- Added a slot indexer that works the same way.  (The macro and slot
  indexers have a lot in common, but they're still so small that I
  didn't bother factoring it out.  Later.)

- The runtest.sh script now takes optional command line arguments
  (full pathnames of testfiles) to specify a set of tests to run.

- The timer.py script was adapted to use the new macroIndexer().

returns a tuple (doc, localName) where doc is a DOM tree, or None if
the current DOM tree should be searched, and localName is the name of
the macro inside that tree.

a simple regression test.

I chose semantics that make all variables defined in outer scopes
(including globals) visible as locals, unless overridden by assignment
in inner scope.

http://dev.zope.org/Wikis/DevSite/Projects/ZPT/FrontPage

Added check for 'FORCE_PRODUCT_LOAD' to bits which try to detect whether we're a ZEO client or not in order not to skip product-loading tasks.  This has the consequence that a ZEO client with the "ZEO_CLIENT" env var set will cause product loading tasks to occur iff his "FORCE_PRODUCT_LOAD" environment var is set as well.

a bug that caused ExtensionClasses with __call_method__ hook to fail
to call unbound CMethods.  Thanks!