ra + uMatra रुपये रुजु एकरूप घाबरू रुपये रुजु एकरूप घाबरू रुपये रुजु एकरूप घाबरू
Some contextual iMatras: क्कि क्खि क्गि क्चि क्छि क्जि क्झि क्टि क्ठि क्डि क्ढि क्णि क्ति क्कि क्खि क्गि क्चि क्छि क्जि क्झि क्टि क्ठि क्डि क्ढि क्णि क्ति क्कि क्खि क्गि क्चि क्छि क्जि क्झि क्टि क्ठि क्डि क्ढि क्णि क्ति
Nukta for all consonants:
क़ ख़ ग़ घ़ ङ़ च़ छ़ ज़ झ़ ञ़ ट़ ठ़ ड़ ढ़ ण़ त़ थ़ द़ ऱ ल़ ऴ व़ श़ ष़ स़ क़ ख़ ग़ घ़ ङ़ च़ छ़ ज़ झ़ ञ़ ट़ ठ़ ड़ ढ़ ण़ त़ थ़ द़ ऱ ल़ ऴ व़ श़ ष़ स़

Nukta half-form ग़्क ग्क ग़्क ग्क

Mark positioning & half-form गङॢं झॣ गङॢं झॣ

Overlapping reph and chanda. They are allowed to touch and be placed in either order…
GS: The only way I see is to make a precomposed glyph. (10.09.14) र्ङॉ र्ङॉ र्ङॉ

rr-substitution does not work. The nukta position is not inherited from the ra-deva used as a compnent to make kh-deva. Reph should be positioned over the inherent vowel stem.
ऱ्त र्त र्ऱ्ख़ कार्रवाई ऱ्त र्त र्ऱ्ख़ कार्रवाई ऱ्त र्त र्ऱ्ख़ कार्रवाई
ऱ्त र्त र्ऱ्ख़ कार्रवाई ऱ्त र्त र्ऱ्ख़ कार्रवाई ऱ्त र्त र्ऱ्ख़ कार्रवाई

Virama positioning should be at ‘halant’ anchor, not ‘bottom’ anchor.
ढ़्क़ ढ़्क़ ढ़्क़

Should be m_ra-deva conjunct with a nukta on the ra, but because the ra has this nukta, the conjunct is not rendered.
GS: this does not work in any of the sample fonts. and it seems to be impossible. Rakar is placed instead of m_ra conjunct [14.09.14] म्ऱ म्र प्रमुख सक्रिय म्ऱ म्र प्रमुख सक्रिय
म्ऱ म्र प्रमुख सक्रिय

Rakar below: Mark positioning?
Rakar is not placed correctly (should use ‘rakar’ anchor) [15.09.14]
द्र द्र

Vowel deletion and half-forms do not work in Firefox when a language is set. Safari doesn’t work at all, and in Chrome vowel deletion does work, but the language-specific forms do not (see Sanskrit).

Hindi (effectively = no language set, since Hindi is never defined in the generated fonts)
व्रत अ ऋ ण झ ल श व्रत अ ऋ ण झ ल श Marathi
व्रत अ ऋ ण झ ल श व्रत अ ऋ ण झ ल श Nepali
व्रत अ ऋ ण झ ल श व्रत अ ऋ ण झ ल श Sanskrit
व्रत अ ऋ ण झ ल श व्रत अ ऋ ण झ ल श Kerning(?) issue when setting a language. Seems like the entire kerning feature is turned off when a text is tagged with a language (any language, except Hindi which is not used in the OT-features, hence a text tagged with ‘hi’ falls back to base-devanagari). This is only true for Devanagari, not the latin.

Also the calculation of Velanti (iMatra- and iiMatra ‘bows’) seems to be way off the mark (in general). Could be related to the missing kerning issue? [22.09.14]
Hindi ठीकाला Hindi ठीकाला
Marathi ठीकाला Marathi ठीकाला

Conjunct s_t_r_ya seems to work, but s_t_ra does not. [19.09.14]
स्त्र्य स्त्र स्त्र्य स्त्र

Conjunct b_ja + nukta = b_za but here the j is misplaced in Glyphs *AND* the b_za conjunct is not rendered in the HTML, rather the half-forms are. [15.09.14]
ब्ज ब़्ज वब्ज ब़्ज

v_ra conjunct not enabled somewhere in the OT-features? [15.09.14]
व्र व्र

Bindu+chanda not replaced with chandabindu [15.09.14]
शॅं शँ शॅं शँ