[FOP-2355] Issues with stacking of diacritics while trying to render PDFs in Thai language

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.1, 2.5
• Component/s: font/unqualified, renderer/pdf
• Environment: Win 7, JDK1.6
• Assignee: Unassigned
• Reporter: Sougata Bhattacharya
• Created: 10/Mar/14 14:41
• Updated: 14/May/14 13:09

Description

Let us take 3 examples, where the first two are rendering ok in the PDF, whereas the 3rd is not.

1. ยี = ย + ี (consonant + vowel)

2. ยี่ = ย + ี + ่ (consonant + vowel + diacritic)

3. ย่ = ย + ่ (consonant + diacritic)

The third complex alphabet is showing ok when you see it in notepad/MSWord/webpage, etc. but in the PDF, it renders with a vertical space in between the diacritic and the consonant, as if a vowel is missing.

Though this does not alter the meaning of the script, it looks unprofessional.

Details on how i want the characters to be rendered in the PDF, can be found in the 2nd example of the link: http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&item_id=CmplxRndExamples

Fonts used: PSL096pro.ttf, PSL095pro.ttf, PSL094pro.ttf, PSL053pro.ttf, PSL052pro.ttf, PSL051pro.ttf, PSL050pro.ttf, etc..