On Fri, May 3, 2013 at 3:24 PM, "H. Özoguz" <h.oezoguz@mmnetz.de> wrote:

> Is it possible to define an automatic replacement?
>
> I want to replace every
>
> اللَّـه
> by
> اللهِ
>
> First is a combination of letters, second is the correct arabic one-symbol
> for the name "Allah". I know, I can do this in the editor, but would
> helpful, if it is possible in the compiling.
>
> Huseyin
>
>
\directlua{ local function replace_txt (buffer)
buffer=string.gsub(buffer,"A","BB") return buffer end
callback.register("process_input_buffer",replace_txt)
}

\starttext my text A \stoptext

copied & pasted in real time at 16:04 on friday May 3 from the Hans's talk
at bachotek 2013 about luatex and plain tex.
Please test with your characters.

--
luigi