Devanagari: 3.11 Numbers, Dates - providing numbers and dates in Devanagari or Latin scripts should be handled by CLDR locales

[alolita]

https://w3c.github.io/iip/gap-analysis/deva-gap.html#devanagari_numerals

Handling numbers or dates in Devanagari should not be a requirement at the script layout level. Providing the ability to use numbers or dates in Devanagari should be at the locale level. Unicode CLDR locales http://www.unicode.org/reports/tr35/#Locale should be able to handle number_deva or date_deva with Devanagari script or Latin scripts.

We need to identify all use cases and corresponding real-life usage specimens for the following combinations:

1. number_deva or date_deva with
   a. Devanagari scripts text or input fields (e.g. drop down lists, calendar widgets)
   b. Latin scripts text or input fields
2. number_latn or date_latn with
   a. Devanagari scripts text or input fields (e.g. drop down lists, calendar widgets)
   b. Latin scripts text or input fields
3. Support for numbers and dates in multi-script text (multiple Indic scripts or combination of Indic and non-Indic scripts)

Further discussion needed by IIP workgroup and bugs reported upstream in CLDR.