org-babel--shell-command-on-region

org-babel--shell-command-on-region is a compiled Lisp function in `ob-eval.el'.

(org-babel--shell-command-on-region START END COMMAND ERROR-BUFFER)

Execute COMMAND in an inferior shell with region as input.

Stripped down version of shell-command-on-region for internal use
in Babel only. This lets us work around errors in the original
function in various versions of Emacs.