There don't seem to be that many that work on text streams, which is what I was referring to. The ones I am aware of are awk, shell scripting languages(bash, zsh, ksh, etc.), and the ed like DSLs( sed, ed, sam, etc.). I think there are others that are not as widely used.

If you google stream processing language you will also get a whole bunch that are not text specific. They are definitely worth looking at if you are interested in building any kind of stream based language.