bugFree UCS Outline Fonts - Bugs: bug #39998, Tamil: Request to add Classical...


bug #39998: Tamil: Request to add Classical Tamil ligatures

Submitted by:  Shree Devi Kumar <shree>
Submitted on:  Wed 11 Sep 2013 06:36:19 AM UTC  
Category:  individual character(s) Severity:  3 - Normal
Item Group:  glyph(s) missing Status:  Fix posted
Privacy:  Public Assigned to:  Steve White <Stevan_White>
Open/Closed:  Open Release:  development

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Sun 13 Aug 2017 06:28:07 PM UTC, comment #4:

I beg your pardon, Shree, this was shelved in a bad state. I vaguely remembered that more had to be done -- but why I didn't get back to it sooner, I can't explain. Mental block, maybe.

FreeSerif regular has been unusable for years, evidently because some tables were deleted or something -- and other tables didn't make sense.

In todays commit, I hope to improve that. I attach my latest test.

If you're still with me, your comments will be appreciated!

(file #41507)

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Thu 12 Sep 2013 02:56:17 PM UTC, comment #3:

Clarifying previous comment.

Ligatures with -ai are showing in classical form.

Ligatures with -aa are showing in modern form.

This is without any setting of stylesets or ligatures.

Shree Devi Kumar <shree>
Thu 12 Sep 2013 01:49:41 PM UTC, comment #2:

Please see attached tex and pdf files.

Only one set of ligatures has been changed for classical form.

(file #29122, file #29123)

Shree Devi Kumar <shree>
Wed 11 Sep 2013 03:02:59 PM UTC, comment #1:

Hi Shree!

Following your suggestions, I made some changes to Tamil, toward the Unicode Book description. Now in SVN.

1) altered ra in combination with pulli, i, and ii

2a) ligature of nna, nnna, rra with aa and o
2b) ligature of nna, nnna, la, and lla with vowel ai

3) special danda and double-danda

These ligatures may be un-done by enabling Style Set 07 "Tamil Reformed"

The altered ra may be un-done by enabling Character Variant 01

Let me know if I missed anything.

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Wed 11 Sep 2013 06:36:19 AM UTC, original submission:

Currently ணா னா றா / ணொ னொ றொ / ணோ னோ றோ / ணை னை லை ளை display without ligatures of vowel signs -aa and -ai. This is CORRECT behaviour in modern Tamil orthography but NOT in old Tamil.

Please see attached pdf with extract of relevant pages from Unicode Specs (http://www.unicode.org/versions/Unicode6.0.0/ch09.pdf) which displays the classical Tamil ligatures.

It would be good to add these as options in Freefont, similar to styles for old hindi, sanskrit etc for devanagari.

tamil-classical.tex file and pdf with unicode for these and display in 3 different fonts is also attached.

A sample in shreelipi tamil (non-unicode) font is also attached with shows the ligatures in use.

Shree Devi Kumar <shree>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #41507:  tamil-classical-new.pdf added by Stevan_White (17KiB - application/pdf)
file #29122:  tamil-classical-new.tex added by shree (3KiB - application/x-tex)
file #29123:  tamil-classical-new-comments.pdf added by shree (45KiB - application/pdf)
file #29095:  tamil-classical.tex added by shree (2KiB - application/x-tex)
file #29097:  tamil-classical.pdf added by shree (26KiB - application/pdf)
file #29098:  sample-tamil-classical.pdf added by shree (117KiB - application/pdf)


Depends on the following items: None found

Items that depend on this one: None found


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    Follow 11 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2017-09-20 Stevan_White StatusProceeding => Fix posted
    2017-08-13 Stevan_White Attached File- => Added tamil-classical-new.pdf, #41507
        StatusFix posted => Proceeding
    2013-09-12 shree Attached File- => Added tamil-classical-new.tex, #29122
        Attached File- => Added tamil-classical-new-comments.pdf, #29123
    2013-09-11 Stevan_White StatusNone => Fix posted
        Assigned toNone => Stevan_White
    2013-09-11 shree Attached File- => Added tamil-classical.tex, #29095
        Attached File- => Added The Unicode Standard, Version 6.0- ch09-Tamil-Classical.pdf, #29096
        Attached File- => Added tamil-classical.pdf, #29097
        Attached File- => Added sample-tamil-classical.pdf, #29098

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