* call by name

#+name: echo-input
#+begin_src sh :var input="original"
  echo "input=$input"
#+end_src

#+RESULTS: echo-input
: input=original

#+name: echo-new
#+call: echo-input("new")

#+RESULTS: echo-new
: input=new

#+begin_src sh :var input=echo-new()
  echo "this=$input"
#+end_src

#+RESULTS:
: this=input=new