Re: processing a literal example line by line in a shell source block?

[Max Nikulin <manikulin@gmail.com>]

On 03/11/2022 01:17, Greg Minshall wrote:
> hi.  i have a text in a named #+begin_example ... #+end_example block.
> i would like to process this text line by line in a shell (bash, say)
> code block.  but, it appears that the individual lines are not
> separated, but passed as one long string to the source block.  (example
> below.)
> 
> #+name: lbl
> #+begin_example
> line 1
> line 2
> #+end_example

You may use :stdin instead of :var, see 
https://orgmode.org/worg/org-contrib/babel/languages/ob-doc-shell.html

#+begin_src bash :stdin lbl
   while read -r -a arr ; do
       printf 'value\t%s\n' "${arr[1]}"
   done
#+end_src

#+RESULTS:
| value | 1 |
| value | 2 |

> #+begin_src bash :var input=lbl :var in2='("first" "second")
>    echo ${#input[@]}
>    echo ${#in2[@]}
>    echo ${input}
> #+end_src

There is a nice tool: shellcheck. It should not be difficult to define a 
function that feeds current source block to it. The only point is to 
specify shell type since shebang is missed. In some cases even bash -n 
before running a script may save some time during debugging.