[stringtemplate-interest] Problem in multivalued attribute handling?

[Colin Bean]

Hi Praki,

I noticed a similar issue recently; I hadn't gotten around to looking
at it in depth (I also hadn't verified it in 2.2 yet, but sounds like
its still there).  As far as I know, PyST won't render any attribute
(that's passed as an int or float) with a value of zero.  I haven't
looked at the source code, but I assume that somewhere there's a
conditional that checks for the value/existence of an attribute, then
checks it in such a way that a 0 evaluates to false and ST doesn't
think that the attribute exists.  If you're passing integer values
into a template, casting them to a string before passing them causes
all zero values to render correctly (that's the workaround I've been
using for now, anyway).

So I haven't verified if this is expected behavior or if this is
unique to the python implementation, but I've noticed the same
behavior.   I'm on vacation this weekend, so I don't have any ST code
near at hand, but when I get back I'll verify the above assumptions
and report back ;)

Anyone else?  Is this a feature or a bug?

Thanks,
-Colin

On 7/6/06, Praki Prakash <praki.prakash at gmail.com> wrote:
> Hi,
>
> While using the Python version of StringTemplate, I noticed that my
> multivalued attribute was missing all the zero values. The following snippet
> demonstrates the problem. I am using version 2.2. Is this a bug? Is there a
> workaround?
>
> >>> import stringtemplate
> >>> st=stringtemplate.StringTemplate("$[0,1,0,1]:{$it$}$")
> >>> print st
> 11
>
> Thanks
> Praki
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