Dieter Maurer wrote:
Giampiero Benvenuti wrote at 2008-5-24 11:47 +0200:
... after the upgrade from zope2.9.7 to 2.10.6 i get this error in the event log:
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
Looks as if the Zope 2.10 PageTemplate implementation made a big step backward with respect to quality of traceback information :-((
As far as I can see, traceback information was never added within the TAL interpreter but always for TALES expression evalutation. The traceback above seems to be about something going wrong within the TAL interpreter which is probably why we don't see any further traceback info.
Shane had added lots of "__traceback_info__" and "__traceback_supplement__" declarations to the older code such that the tracebacks were very informative.... ... unlike the traceback above.
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.