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Just updating it: Yes, the issue is fixed. Thanks!

Part 2 (Message too long for forum?)

Here are some visual examples:

(Top: working example of quad working in latin languages. Middle: Same example on Arabic. Bottom: bold/color tags in the text.)

Is there I way I can DM or e-mail you privately to share more info/resources? For example I could share the semi-Fix for quad rendering in RTL, but it uses a completely different logic than the original FixTest function. I can't make that work on the pastebin code at all.

Thanks in advance!

Hi @Kai, thanks for the reply. Sorry for the delay. I did a ton of checking and testing.

To clear something: When I mentioned latest package I meant that I have the latest SuperTextMesh on Asset Store. The project was using some older version to stability (and safety) reasons, but I upgraded to the latest, to see if that made Arabic work properly.
--
So a quick rundown of what I tried on the last weeks: I tried said pastebin code from the beginning. It worked fine for single line text, and texts without tags.
To try to fix it, with help of an external developer* tried rewriting the whole FixText function to fix tags (and icons/quads) and multi-line text. I got quads somewhat working, but it is hit or miss. Multi-line text still completely broken.
--
Current state:
I tried again the pastebin code after your reply, and did a lot of testing and checking on the Super Text Mesh settings on the inspector. I got multi-line to work on dialogue box, yay. It needed rtl = true, and right alignment. For this specific piece of UI, this combo can work. But I can't support every text to be right alignment unfortunately, but I don't think it will be an issue for UI, single work texts.
But tags (color, bold, etc) and icons (quads) are still very broken. I think this is the last stuff that I  need to have a complete working solution.

Fully broken text when using color and bold tags. Bold only in a piece of text is broken too.

Expected (imagine that lorem ipsum = arabic text):

Welcome, lorem, ipsum ipsum <f=bold><c=teachers>LOREM IPSUM</c></f>.

Result:

Complete gibberish characters. Broken characters, on top of eachother. (See last text on the images

Fix Tags = true, Flip Curly Braces = false: text icon (quad) don't render at all

Fix Tags = true, Flip Curly Braces = true: text icon (quad) don't render at all

Fix Tags = false, Flip Curly Braces = false: استخدم <q=KeyboardQuad, 5, 2> للتحرك    (Tag/Quad render as text, with < > inverted ">q=KeyboardQuad, ,5,2<")

Fix Tags = false, Flip Curly Braces = true: استخدم <q=KeyboardQuad, 5, 2> للتحرك    (Tag/Quad render as text, with < > inverted ">q=KeyboardQuad, ,5,2<")

{Tried with either rtl true/false. Tried with all text alignments}

Hi, is there a working support for Arabic (RTL text)? I'm using the latest package version (and Unity 6.0).
I followed the recommended ArabicFixer script using ArabicSupport package. It works flawless for single line text. However multi-line text (aka Dialogues) it breaks completely.