how can I access the current selected text within the :rubydo command?
The current line is accessible by the $_ global variable, but I was
not able to find such a variable for the current visual selection.

Many thanks,
mkorfmann

To overwrite the selection with the contents of the variable new_text,
I've done:

old_x=VIM.evaluate("@x")
VIM::evaluate("setreg('x',\"#{new_text.vim_escape}\")")
VIM::command(":normal vgv\"xP")
VIM::evaluate("setreg('x',\"#{old_x.vim_escape}\")")

Where vim_escape is defined as follows:

   class String
      #escapes a string so it can be concatenated into
      #a call to VIM.evaluate
      def vim_escape
         result=dup
         result.gsub!("\\",'\\\\\\\\')
         result.gsub!('"','\"')
         result
      end
   end

--
Chanoch (Ken) Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/

Thank you, any help with vimscript is highly appreciated . Today I wasted 2
hours, figuring out why I couldn't access a function's parameter :) .
Do you know a good tutorial, which walks you through the editor api ?
Probably discussing things like how one can replace text or how one can get
the character under the cursor ?

Many thanks .