I am trying Sublime Text 2 on Ubuntu 12.04 64-bit and started loving it, but when I use Telugu compound letters inside the editor, it displays little boxes with "25CC" written inside the boxes, making the text unreadable.
For example, the simple letter క displays fine, but the compund letter కు doesn't.
You can copy paste the కు into editor to see how it looks, comparing it to the letter showing here.
I wonder if the editor is trying to display a non-visual join code that may be present in a compound letter.
The other editors like gedit, geany do not have this issue.
Telugu is one of the Indian languages, but I guess this would be a problem with any languages that use compound letters with unicode.