As some suggestions at the previous thread
, I creat this topic for you to ask questions regard adding characters supporting Vietnamese.
A guide for Vietnamese typography written by Donny Truong: http://vietnamesetypography.com
I'm a native Vietnamese speaker, a self-study type design, and I can (hopefully) answer the general questions you might have about designing typeface for Vietnamese, and/or extend your existing typeface so it can support Vietnamese. Nevertheless, you should read the above mentioned guide before asking questions, as it already covers the basics.
I'm also open for bussiness in extend your typeface for supporting Vietnamese. Thanks for reading!
I'll update the new questions answered at the top of this thread.