[Libreoffice-bugs] [Bug 134193] sm Formula editor does not support RTL-CTL localized presentation markup, just content markup of formulas

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=134193

--- Comment #4 from libre officer <smartazaiz at gmail.com> ---
(In reply to V Stuart Foote from comment #3)
> Our native StarMath, and MathML in general, provide limited support for
> Presentation Markup of Arabic mathematical notation. Only the Content Markup
> needed for standard mathematical notation.
> 
> ICU libs Unicode bidi is functional for literal strings, but literal
> formulas as in OP simply need to be entered in line with text in the module
> in use.
> 
> Would require dev effort to refactor the sm Formula editor to provide logic
> needed to handle localized literal formula input and localized Presentation
> martup of formulas.
> 
> =-ref-=
> 
> https://www.w3.org/TR/2006/NOTE-arabic-math-20060131/

I see that the complex formula are difficult to reimplement, but at least for
primary and secondary schools, you mostly need the ability to be able to render
the unicode bidirectional characters (specially: LRE, RLE, PDF, RLM, LRM, etc.)
in the output window.

At this moment, this is ignored in the output window, but supported in the
command window (however, it should have the right/left alignment).

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