[HarfBuzz] Regression test for Khmer(0.9.5 VS 0.9.14)

[datao zhang]

Hi : If there are no zwnj before triisap, it should display as your description, but when there are a zwnj before, the behavior is different. I think 0.9.5 and windows 7 are right, 0.9.14 is wrong. Br,Dean
 Date: Tue, 7 May 2013 15:22:20 +0700
Subject: Re: [HarfBuzz] Regression test for Khmer(0.9.5 VS 0.9.14)
From: nirvn.asia at gmail.com
To: dataozhang at hotmail.com
CC: harfbuzz at lists.freedesktop.org

One comment r first line in your attached km_test.png: 0.9.14 actually has it right while both 0.9.5 and windows 7 are wrong. I would actually tend to believe the two other cases are also better in my view under 0.9.14. The sign ៊ when applied following an upper vowel (like ិ ី etc.) is shifted below the consonant and looks like ុ 


I however believe there are currently two schools of thought on this in Cambodia. Language experts are weighting in on both sides :)

M




On Tue, May 7, 2013 at 3:17 PM, datao zhang <dataozhang at hotmail.com> wrote:




Hi all:
 
Test font: Khmer OS.ttf, please refer to attachment.
 
After compared two version, The new version can't handle consonant register shift correctly when combine with zwnj:

 
1.

 
 
 

  ហ្វ‌៊ីតូអេសស្ត្រូចេន
  ha,coeng,vo,zwnj,triisap,_ii,ta,_uu,qa,_e,sa,sa,coeng,ta,coeng,ro,_uu,ca,_e,no

 

 
 
 

  ប៉ូលីហ្វ‌៊ីណូល
  ba,muusikatoan,_uu,lo,_ii,ha,coeng,vo,zwnj,triisap,_ii,nno,_uu,lo

 
 
when zwnj is before triisap or muusikatoan, the shift should keep it as it should be, not changed it to vowel u. please refer to attachment.
 
2.


 
 
 

  អ៊‍ឹកធឹក
  qa,triisap,zwj,_y,ka,tho,_y,ka

 
I can't find any proof how to handle register shift when combine with zwj, maybe it should handled similar as zwnj. I have no idea about this. Maybe we can refer to uniscribe.
 
 
Br,
Dean

 		 	   		  

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