How to support the deva:reph glyph?

[LettError]

These glyphs have no unicode value so they're not generated, but they are needed for proper shaping and input.

We have these:
deva:ra 0930 Lo
deva:virama 094D Mn

R + shapes:

deva:ra + deva:virama + consonant or vowel -> consonant or vowel + deva:reph as a combining shape.

Shapes + R

consonant or vowel + deva:virama + deva:ra -> consonant or vowel + deva:rakaar as a combining shape.

Adobe's AGD appears to have PUA values assigned:

dvReph
	fin: uni0930094D
dvRakar
	fin: uni094D0930

[LettError]

Maybe more an issue for https://github.com/LettError/glyphBrowser

[lianghai]

Some ideas—

For reph, as in र्ट:

• Systematic name: deva:rasignabove (or deva:rasignabovebaseleading, depending on how far you want it to be explicit… As above- and pre-base signs seem to by default signify leading consonants, the leading part is probably necessary only for below- and post-base signs, such as knda:rasignpostbaseleading.)
• Generic name: deva:reph or deva:rasignreph

For rakār, as in ट्र:

• Systematic name: deva:rasignbelow (or deva:rasignbelowbasetrailing)
• Generic name: deva:rakar (or none, as I don’t think deva:rasignbelow is special enough to deserve a special generic name, when examining from a generalized, multi-script point of view.)

See also the so-called eyelash reph, as in ऱ्य, which structurally is not typical reph (that is, a phonetically cluster-initial consonant r being written in a way different from other cluster-initial consonants):

• Systematic name: deva:rasignpre (or deva:rasignprebaseleading)
• Generic name: deva:rasignhalf (or deva:eyelash, but it’s probably not special enough to deserve one.)

[pauldhunt]

FYI: the AGD values are not PUA, they follow the naming conventions recommended in the AGL specification:

The name ‘uni20AC0308’ has a single component, which is mapped to the string U+20AC U+0308.

Following this formatting, uni0930094D maps to the string U+0930 U+094D.

[lianghai]

What is AGD again?

[pauldhunt]

@lianghai AGD = Adobe Glyph Dictionary, it is a resource distributed with the Adobe Font Development Kit for OpenType (FDK). It is a repository for glyph names that Adobe has used for its own font development projects:
https://github.com/adobe-type-tools/afdko/blob/develop/python/afdko/resources/AGD.txt