John Hendy writes:
> There's no worg page for the shell language (surprised me!).
Several babel languages in core lack documentation on Worg in addition
to shell: calc, comint, coq, ebnf, emacs-lisp(!), forth, fortran,
haskell, io, java, javascript, objective caml, org(!!!), perl, plantuml,
proc
This is a known issue with diff, I think. Add a line containing ":" below, or
"echo" or "diff foo bar | cat".
https://stackoverflow.com/questions/27304469/capturing-the-output-of-diff-with-org-babel
I have
(setq org-babel-default-header-args:sh
'((:prologue . "exec 2>&1") (:epilogue . ":"))
