[cairo] Another Pango AttributesList question

[Travis Griggs]

Toying around with setting attributes for Layout objects, I see some  
interesting behavior.

If I do (in psuedocode) something like this:

make layout
set text/markup
create attributes array
create new attribute (foreground color for example)
add new attribute to attributes array
set layout's attributes
display layout

All will be as expected. I can also do something like:

make layout
set text/markup
create attributes array
set layout's attributes
create new attribute (foreground color for example)
fetch attributes array from layout and add new attribute to it
display layout

That works too. But what doesn't seem to work is:

make layout
set text/markup
create attributes array
set layout's attributes
display layout
create new attribute (foreground color for example)
fetch attributes array from layout and add new attribute to it
display layout again

The second display show's no differences. Something happens after  
displaying that seems to make any subsequent adjustment to the  
attributes array ignored.

I tried a context_changed, but that has the effect of blowing all of  
the attributes. I must be missing something about the lifecycle/ 
relationship between layouts and attribute arrays. Any help, hints,  
appreciated.

--
Travis Griggs
tgriggs at cincom.com
"The dissenter is every human being at those moments of his life when  
he resigns momentarily from the herd and thinks for himself." - 
Archibald MacLeish, poet and librarian