For what it's worth, I fired up BBEdit (another popular commerical Mac code editor) and pasted in some Arabic text. It didn't behave remotely correctly -- the t

For what it's worth, I fired up BBEdit (another popular commerical Mac code editor) and pasted in some Arabic text. It didn't behave remotely correctly -- the text shifted around bizarrely as I moved the intertion point. I think it's entirely plausible that Panic also shipped a text-layout system without full bidi support -- maybe that's why theirs is faster and less buggy on LTR text. The left-to-right language market (English, Spanish, French, Russian, Chinese, Japanese, Korean...) is probably big enough to support a Mac app development studio on its own.