Khmer and Lao fonts need special characters for OpenType layout

[GoogleCodeExporter]

Some Khmer fonts have ZWSP while others have ZWJ, ZWNJ. Still others have 
U+250C but most Khmer fonts do not U+250C (dotted circle). 

All fonts should have U+250C to represent a stand-alone combining mark. 

According to the following references, ZWJ, ZWNJ and ZWSP have to be present in 
Khmer fonts in addition to U+250C. 

http://www.microsoft.com/typography/otfntdev/khmerot/shaping.htm
http://goo.gl/RrNS7  (It's a SIL document in PDF)

Original issue reported on code.google.com by jungs...@google.com on 2 May 2013 at 5:42

[GoogleCodeExporter]

Original comment by roozbeh@google.com on 26 Dec 2013 at 9:01

[GoogleCodeExporter]

I just added a test for this in the tools. I'll see if I can borrow the glyphs 
from another noto font that has them.

Original comment by roozbeh@google.com on 11 Sep 2014 at 7:08

• Changed title: Khmer and Lao fonts need special characters for OpenType layout

[GoogleCodeExporter]

This issue was closed by revision 6d826a440527.

Original comment by roozbeh@google.com on 12 Sep 2014 at 12:42

• Changed state: Fixed