[XeTeX] RTL paragraphs with XeTeX?

[Jonathan Kew]

On 1 Jul 2011, at 17:20, Petr Tomasek wrote:
>> So, try:
>> 
>> \noindent \beginR \indent Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris luctus accumsan vulputate. Vivamus vel lacus nunc, a dictum lacus. Duis rutrum, odio blandit dapibus facilisis, ipsum neque vestibulum ligula, ut vulputate leo nisl eget dolor. Donec luctus consequat porta. Duis tristique elit in sapien vulputate non pulvinar felis interdum. Praesent auctor eleifend sollicitudin. In hac habitasse platea dictumst. Donec congue congue interdum. Suspendisse vel dictum nulla. Nullam sit amet mi ut libero blandit scelerisque.\par
>> 
>> Or just precede a series of paragraphs with:
>> 
>> \everypar={\setbox0=\lastbox \beginR \box0 }
> 
> Ok, thank a lot!
> Don't I need to put \endR somewhere so that it's balanced?
> Perhaps that's what puzzled me...

No. See the e-TeX documentation for more details about \beginR, etc.

> 
>> for automatic RTL-ness. (Explanation: \lastbox is used to retrieve the box that was inserted for the original automatic (LTR) paragraph indent; then after switching directionality, we put it back again so as to get the indent at the right end.)
> 
> Ok, that's clear. Will \leftskipt and \rightskipt then be quasi switched too?

Not if I recall correctly - left is still left, and right is still right.

JK