Org Babel Bash With Noop Lines

Fleeting

After make org-babel-sh-evaluate handle no newline input lines correctly and make org-babel-sh-evaluate handle noop lines, there have been works on org-mode that supposedly fixed sole issues. Yet some still remain.

When using a session, org mode keeps a comint buffer open, sends the input to it and gets its output.

When you interact with a repl, it

prints the prompt,
meaning wait for input (ending with a newline character),
the input line
the output
therefore, go back to printing the prompt,

Inside the comint buffer, because it basically is just a wrapper around a repl, all the lines are sent and the code tries hard to get rid of the prompt that gets intertwined with the output.

ob-shell does this is looking for prompts a beginning of line, with a regexp like ^\\$¹ and getting rid of it.²

This works right when all the lines generate some output and end with a newline.

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the actual regexp is

(setq-local comint-prompt-regexp
            (concat "^" (regexp-quote org-babel-sh-prompt)
                    " *"))

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this is done by org-babel-comint-with-output

                              (replace-regexp-in-string
                               comint-prompt-regexp
                               ,org-babel-comint-prompt-separator
                               text))))

... then later

         (delete "" (split-string
                     string-buffer
                     ,org-babel-comint-prompt-separator))))))

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