[Zope] dtml-var weirdness

[Joseph A Knapka]

Hi everyone,

Stupid question of the day:

Why might the following code result in a KeyError? It does
in some contexts under Zope 2.5.0.

<dtml-if expr="REQUEST.has_key('xyz')">
<dtml-else>
  <dtml-call expr="REQUEST.set('xyz','Hello world')">
</dtml-if>

Sometimes the next line results in a KeyError, value 'xyz':

<dtml-var name="xyz">

In such cases, this works fine:

<dtml-with REQUEST only>
  <dtml-var name="xyz">
</dtml-with>

Huh?

TIA,

-- Joe
"I should like to close this book by sticking out any part of my neck
 which is not yet exposed, and making a few predictions about how the
 problem of quantum gravity will in the end be solved."
 --- Physicist Lee Smolin, "Three Roads to Quantum Gravity"