Right to left languages support in R, using Mac - r

Question

I am wondering if there is anyway to support right-to-left languages in R while using Mac
For instance suppose the following code:
x <- data.frame(a=runif(10),b=runif(10))
ggplot(x, aes(a,b)) + geom_point() + xlab("سلام")
Here is the result:
Here I tried to change the x-label as a Persian/Arabic word (سلام = Hello). While displayed correctly in the code (using R-Studio), in the graph the characters of سلام are displayed in the reverse order (left-to-right).
Also the linkage between two consecutive letters (i.e. س connected to ل would be سل) is broken.
Do you have any idea how to fix it?
Update
With the answer of #agstudy I found R under Ubuntu is perfectly OK. However I have no idea how to solve the problem in Mac (OS X 10.9.1) having updated version of R and R-Studio

Answer 1

It works fine for me. I just change the size of labels to better show it.
library(ggplot2)
x <- data.frame(a=runif(10),b=runif(10))
ggplot(x, aes(a,b)) +
geom_point()+ xlab('سلام') +
theme( axis.title=element_text(size=100,face="bold"))
I am using :
other attached packages:
[1] ggplot2_0.9.3.1
R version 3.0.2 (2013-09-25)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Also works fine under :
R version 3.0.3 (2014-03-06)
Platform: x86_64-pc-linux-gnu (64-bit)

Answer 2

I had the same problem with Hebrew letters, and I manage to work around it by reading the label from an Excel file instead of typing it directly into R studio. This method works as long as you don't need to mix letters with numbers, in that case things start to get messy.
for example:

Answer 3

I know this is an old question, but I recently wrote an R package to deal with it. It's a simple R wrapper around some python code, since this problem also occurs when using python in mac. The package reverses the Arabic string and then reconnects the letters correctly using Abdullah Diab's python-arabic-reshaper module.
My package is here.
Abdullah Diab's module (for python) is here.