[z3-five] yet more ZCML / template binding trouble

[Rob Miller]

ugh, this is frustrating.  each time i think i'm going to get it 
working, another issue arises to thwart me.

after applying whit's TrustedExpression.py patch, i am able to load the 
plone main_template while rendering my fate:addform view.  however, i'm 
not able to fill any of the slots in main_template.  i'm not getting an 
error, it's just not rendering my code in the slots.  here's a summary 
of the setup:

- my custom product has a fate:addform directive in configure.zcml which 
registers an addform for my AT content type

- when i browse to this addform, it correctly pulls in and renders 
fate's add.pt template

- my product has a custom five_template, specified in overrides.zcml

- the add.pt template is correctly finding my custom five_template as 
its primary context... i can define slots in my five_template.pt, and i 
can fill those slots from add.pt.  when i roll-my-own lightweight "skin" 
within five_template.pt, the addform works perfectly, generating an 
input form based on the AT schema, and creating an instance of my 
content type upon submission

- when i modify my five_template.pt so that it contains a 
metal:use-macro="here/main_template/macros/master", the main_template is 
found and rendered... HOWEVER, none of my metal:fill-slot attributes are 
honored... i end up w/ a nice looking plone site wrapper, but with a 
completely empty central content area.  this is true even when i just 
stick some static text in there... once i call in the main_template, i 
no longer have the ability to change the output of the page at all

i've spent hours stepping through the code trying to figure out how this 
is all glued together.  the time hasn't been wasted; i know a lot more 
about the inner workings of interface and adapter bindings now, and 
about five's __bobo_traverse__ magic, etc., but i'm no closer to 
figuring out what the problem is.

any leads?

-r