从org-mode Babel导出时包含'$'符号？

Question

I am writing a tech book using org-mode. I want to export to markdown (GitHub Flavored) code and results and it works fine. But I also want to export the $ or whatever comes before (eg (venv) $ when I type something in the terminal.

Now I have this:

#+BEGIN_SRC sh :exports both
  python --version
#+END_SRC

#+RESULTS:
: Python 3.6.2

Which gets exported into this:

python --version
Python 3.6.2

And what I want is this:

$ python --version

Python 3.6.2

Any ideas?

Answer 1

For HTML output you could add an export filter like

(defun my-html-dollar-sign-filter (text backend info)
  "Add a $ sign to the beginning of code blocks"
  (when (org-export-derived-backend-p backend 'html)
        (replace-regexp-in-string
         "\\(<pre class=\"src src-sh\">\\)" "\\1$ " text)))

(add-to-list 'org-export-filter-src-block-functions
             'my-html-dollar-sign-filter)

which workes sinces <pre class="src src-sh">python --version</pre> identifies the command pretty unambiguously in the HTML output. Unfortunately the Latex exporter wraps both code and result in a verbatim environment which makes it impossible to only put a dollar sign in front of the code this way.