Already there is a bug related to this topic here: - https://phabricator.wikimedia.org/T21412

For Kannada many template reporting this issue were fixed by applying the solution mentioned in the thread. 

Check the comment by :bzimport 
===

As long as {{#time}} supplies you with Kannada digits, you need to use {{format:KANNADA_INTEGER|R}} (note "R" argument). For example, you can use this to fix the issue:

{{#ifexpr:{{formatnum:{{#time:t|{{{year|2000}}}-{{{month|jan}}}}}|R}}>28|29}}

===


On Wed, Dec 16, 2015 at 11:51 AM, Tito Dutta <trulytito@gmail.com> wrote:
Perhaps related to calc or parser function?
https://en.wikipedia.org/wiki/User:Titodutta/sandbox8
AFAIK, Indian numerals can not be used in calculations


On 16 December 2015 at 03:44, Asaf Bartov <abartov@wikimedia.org> wrote:
Thanks, Ashwin!

Manoj, thanks for bringing up this need.  It won't make it into this round of prioritization, but it can be added to the backlog.  I would happily create a Phabricator ticket on your behalf, but I need to better understand the need you describe.  Where would you like to use Indic numerals, exactly?  In template parameters, for example? (i.e. instead of the 1 and 2 in: {{some_template|1=this|2=that}}?)

Could you give some examples of what you meant?

Thanks,

    A.

On Tue, Dec 15, 2015 at 7:48 AM, Ashwin Baindur <ashwin.baindur@gmail.com> wrote:
Asaf, thanks to you, I got alerted and could support whatever seemed
worthwhile to me in the context of English Wikimedia projects :)
Thanks

On Tue, Dec 15, 2015 at 8:07 PM, Niharika Kohli
<niharikakohli29@gmail.com> wrote:
> Hi Manoj,
>
> Unfortunately it’s a little too late to propose new projects in the survey.
> :( Sorry.
>
> We did publicize the survey on all village pumps and on
> Wikimedia-l/Wikitech-l. Please let us know a better way to publicize the
> survey next time so that you don’t miss it again. We’ll be holding it
> periodically (every year).
>
> Thanks.
> Niharika
>
> On Dec 15, 2015, at 8:10 AM, Manoj Khurana <hello@manojkhurana.com> wrote:
>
> Hi Asaf,
> Sorry for pitching in late. Can you please take up a project with concerned
> teams to address a very big concern of Hindi Wikipedia, and I assume this
> must be the issue in all other indic wukis too.
>
> Can we have some arrangement where indic numerics are accepted in all
> functions and templates for carrying out calculations just like normal
> numbers?
>
> Presently indic numerics are treated by software as mere symbols and can not
> be used for calculations. This is creating huge problems for us in
> maintenance tasks.
>
> I am not from any technical background, so I have highlighted the problem in
> layman's language. I do hope our friends with software background will help
> in defining the issue in technical terms.
>
> Regards,
> Manoj.
>
> On Dec 15, 2015 12:10 AM, "Asaf Bartov" <abartov@wikimedia.org> wrote:
>>
>> Hello, everyone.
>>
>> Here is a link to the Community Tech Wishlist survey that has been going
>> on for several weeks now.  I have heard today from some Indian Wikimedians
>> that they were not aware of the survey or its importance.  This determines
>> what the Community Tech engineers at WMF will work on next!
>>
>> Please do go here:
>> https://meta.wikimedia.org/wiki/2015_Community_Wishlist_Survey
>>
>> Click one or more of the categories and express support (or oppose)
>> whatever you want.
>>
>> The survey ends in just over 12 hours!
>>
>>    A.
>> --
>>     Asaf Bartov
>>     Wikimedia Foundation
>>
>> Imagine a world in which every single human being can freely share in the
>> sum of all knowledge. Help us make it a reality!
>> https://donate.wikimedia.org
>>
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--
Warm regards,

Ashwin Baindur
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--
    Asaf Bartov
    Wikimedia Foundation

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