There seems to be some limitation (or bug) in right-to-left (r2l) alignment,
when used alongside linenumbering. Consider the following:
> \setuppapersize[A6]
> \starttext \showframe
>
> \section{Incorrect}
> \startlinenumbering
> \startalignment[r2l]
> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque
> molestie dictum quam non congue. Integer ut dolor vel mi vestibulum molestie
> vel et nulla.
> \stopalignment
> \stoplinenumbering
>
> \section{Correct}
> \startalignment[r2l]
> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque
> molestie dictum quam non congue. Integer ut dolor vel mi vestibulum molestie
> vel et nulla.
> \stopalignment
>
> \stoptext
The RTL alignment works correctly on its own. However, when you introduce
another factor — here, linenumbers — the RTL alignment is ignored.
Perhaps this linked to the problem with of RTL footnotes being discussed here:
gmane.comp.tex.context/92113
<http://article.gmane.org/gmane.comp.tex.context/92113>?
Best wishes,
Talal
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