Philipp von Weitershausen wrote at 2008-5-28 21:52 +0200:
Dieter Maurer wrote:
2008-05-24T09:31:32 ERROR Zope.SiteErrorLog http://myurl/error_log/manage_main Traceback (innermost last): Module ZPublisher.Publish, line 119, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 42, in call_object Module Shared.DC.Scripts.Bindings, line 313, in __call__ Module Shared.DC.Scripts.Bindings, line 350, in _bindAndExec Module Products.PageTemplates.PageTemplateFile, line 129, in _exec Module Products.PageTemplates.PageTemplate, line 89, in pt_render Module zope.pagetemplate.pagetemplate, line 117, in pt_render Module zope.tal.talinterpreter, line 271, in __call__ Module zope.tal.talinterpreter, line 346, in interpret Module zope.tal.talinterpreter, line 379, in do_startEndTag Module zope.tal.talinterpreter, line 412, in do_startTag TypeError: len() of unsized object ... As far as I can tell, the code in zope.pagetemplate and zope.tales still has the same traceback information that Products.PageTemplate had. zope.tal, which contains the TAL interpreter, doesn't have any traceback supplements, but then again, Zope 2's TAL package doesn't either.
To conclude, I don't think there's a "step backward" at all.
The Zope 2.9 code had traceback support in "PageTemplate.pt_render" which told us which template was affected. As you can see in the traceback above, at least this traceback support is lost in Zope 2.10. To conclude: "no step backward at all" is incorrect. Looking at Zope 2.11, the traceback support above seems to have been resurrected. Furthermore, I could not find the equivalent of the transback support which formerly was in "Expressions.py" (I found the one corresponding to "TALES" and "PythonExpr"). -- Dieter