Add ligature for દૃ (dṛ) in Sans Gujarati

[vizzmay]

• દૃ = દ (U+0AA6) + ૃ (U+0AC3)

Serif Gujarati has a ligature for દૃ while Sans Gujarati displays a regular combination of letter and matra.

• Left: Noto Sans Gujarati, version 2.001, no ligature
• Right: Noto Serif Gujarati, version 2.001, has ligature

[nizarsq]

This issue reproducible on NotoSansGujarati.

[simoncozens]

The strange thing is that both fonts have this syllable as a precomposed glyph; it is a ligature in both Sans and Serif, that the designer has drawn. They've just drawn it very differently. I wonder if there's some thinking that the Sans font should be more "regularised" or something?

@JelleBosmaMT, I know it was super long ago but can you remember the thinking here?

[JelleBosmaMT]

I found the oldest release from March 2013, which had the irregular variant. A couple of weeks later I changed it to the regular shape it currently has. I think the change is based on feedback, because I have a PDF showing some options of possible changes to some other conjuncts from the same time: which resulted in an update in July. At the end of the year there is another version, based on more feedback: so the current da-rvocalic has survived all reviews after the first.

[simoncozens]

Thanks - so it sounds like the fix here (if there is one) would be the other way around, i.e. to remove the "ligature" from Sans and make it consistent with the "regular" form in the Serif.

[JelleBosmaMT]

I suspect both are OK.