Fwd: New Thread - FVS Assignment MisMatch

---------- Forwarded message ----------
From: Erdenechimeg Myatav <erdeely@gmail.com>
Date: Sun, Aug 2, 2015 at 9:16 PM
Subject: Re: New Thread - FVS Assignment MisMatch
To: Greg Eck <greck@postone.net>


Hi Greg,

A few comments on some of the issues you raise and some of the
discrepancies between the various fonts.

U+1820 - A

Re point 3, the glyph at I+FVS1 (and M+FVS2 in NSM font)  is only used
after NNBSP, i.e. it is always the first letter of a word suffix/case.
Teachers of Mongolian script always refer to this as initial form, which is
the basis for the coding at I+FVS1. However, in the Unicode standard the
decision was made to code it as a middle form (basically because it appears
in the middle of the word), which is why it appears at M+FVS2 in some
fonts.

I think the M+FVS2 combination could be omitted, as is done in BS.

U+1828 - NA

The glyph at M+FVS2 was defined as a middle form in Unicode for the same
reason as given above for U+1820-A - i.e. because it appears in the middle
of the word. However, this form only occurs immediately before MVS, and as
such teachers of Mongolian script refer to it as the "dotted final form".
So in my view it makes more sense for it to be coded as F+FVS1 rather than
as M+FVS2.

Regarding the forms at M and M+FVS1, the dotted form is used before a
vowel, whereas the non-dotted form is used before a consonant. The letter
NA is almost always followed by a vowel, so the dotted form is by far the
more common. So I think it makes most sense for the dotted form to be the
basic form and the non-dotted form to be the variant, as in NSM and BS.


U+182C - QA

As far as I understand, the dotted forms are archaic forms and are not used
in modern Mongolian. So it certainly makes sense for the non-dotted forms
to be the default forms.

Regarding the feminine forms at I+FVS1 and M+FVS1 in NSM and BS, the
feminine form always forms a ligature with the following vowel. But there
is (at least) one word in which the feminine initial QA is followed by a
consonant - in fact by another QA in the example I can think of: U+182C
U+182C U+1822 U+1837 (XXIR) - and in this word the glyph for the initial QA
is the one shown at I+FVS1 in NSM and BS.

U+182D - GA

Re point 1, this double dotted glyph only occurs immediately before MVS
(analogously to the dotted glyph of NA; see comment above), and again
teachers of Mongolian script refer to it as a final form rather than a
middle form. So I think it makes more sense for it to be represented as a
final form variant rather than a middle form variant.

Regarding the forms at M and M+FVS1, as for NA the dotted form is used
before a vowel, whereas the non-dotted form is used before a consonant and
GA is almost always followed by a vowel, so the dotted form is by far the
more common. So again I think it makes most sense for the dotted form to be
the basic form and the non-dotted form to be the variant, as in NSM and BS.


Thanks,
Erdenechimeg





On Sun, Aug 2, 2015 at 5:14 PM, Greg Eck <greck@postone.net> wrote:

> We are winding down on the NNBSP discussion.
>
>
>
> Let’s go ahead with another topic as attached dealing with 6 FVS
> assignments. The basic issue is that the current specification says to make
> the assignment at one position whereas the glyph is processed by OT rulings
> at another position.
>
>
>
> Greg
>