Noto Devanagari: there is a bug

[Abhay2Agarwal]

I was recently typing in Devanagari, and i encountered a bug, which i think is significant. The description is :

र + ् + [any character] + ो + र + े
र्रोरे

reph overlaps with matra e

I will attach some photos

A lot of fonts have this bug

I hope you will see it and fix this.

[Abhay2Agarwal]

This is evident while writing कार्पोरेशन बैंक. You can see "र्पोरे" reph & matra e do overlap

[simoncozens]

I agree that it overlaps - but I am not sure that it's a bug! Is it unreadable? Can it be confused for something else? As you say, it's something that happens with most Devanagari fonts - so maybe it's OK; maybe it's expected at this point.

I could add an alternate, steeper e-matra just for this case, but it's adding another glyph and rules to fix a rare corner case, so I'd like to make sure it's actually a problem first.

[Abhay2Agarwal]

I agree that it overlaps - but I am not sure that it's a bug! Is it unreadable? Can it be confused for something else? As you say, it's something that happens with most Devanagari fonts - so maybe it's OK; maybe it's expected at this point.

I could add an alternate, steeper e-matra just for this case, but it's adding another glyph and rules to fix a rare corner case, so I'd like to make sure it's actually a problem first.

Yes in smaller font sizes it is creating confusion and unreadable. Please fix this.

Maybe another way to get this better is modify either /both reph & matra e so they never lap.

I was recently writing a mail to the corporation bank (an indian bank) in Hindi and i myself got confused looking at the way we wrote कार्पोरेशन.

[Abhay2Agarwal]

This overlap will also happen on:

र्खरे र्गरे र्घरे ... र्शरे र्षरे र्सरे

Most of the alphabets in hindi.

I would gently urge you to modify reph a little :)

[MAZ06]

Worth mentioning is that this does not happen in Noto Serif Devanagari:

It seems that the reason why it doesn't happen is because Noto Serif Devanagari has two different glyphs probably for this exact situation:

I see no reason why Noto Sans Devanagari shouldn't have this feature as well. In fact, why doesn't Noto Sans Devanagari have it already?

[MAZ06]

Related:

र्परै

[Abhay2Agarwal]

Worth mentioning is that this does not happen in Noto Serif Devanagari:

It seems that the reason why it doesn't happen is because Noto Serif Devanagari has two different glyphs probably for this exact situation:

I see no reason why Noto Sans Devanagari shouldn't have this feature as well. In fact, why doesn't Noto Sans Devanagari have it already?

It does overlap in Noto Serif Devanaagari too in condensed and small font size.