Hi, I’ve seen a couple of pointers recently to using Org mode and tangle to write more literate Emacs configurations. I use Org+babel all the time to write “interactive” documents, so I thought I’d try out tangle from Org. I didn’t want to start with something as comlicated as my Emacs config :-) so I figured I’d kick the tires with a small python program. That did not end well. Consider: #+TITLE: Python literate programming #+OPTIONS: html-postamble:nil It starts off as a completely standard Python3 program. ---%<------------------------------------------------------ #+BEGIN_SRC python :tangle yes :weave no #!/usr/bin/env python3 #+END_SRC It defines ~a~. #+BEGIN_SRC python :tangle yes def a(): print("a") #+END_SRC And ~b~. #+BEGIN_SRC python :tangle yes def b(): print("b") #+END_SRC Now ~c~ is a little more complicated: #+BEGIN_SRC python :tangle yes def c(): print("c") #+END_SRC Not only does ~c~ print “c”, it calls ~a()~ and ~b()~. #+BEGIN_SRC python :tangle yes b() a() #+END_SRC Finally, make it importable. Not that you’d want to. #+BEGIN_SRC python :tangle yes if __name__ == "__main__": main() #+END_SRC --->%------------------------------------------------------ That’s the script. It weaves into HTML more-or-less ok (there’s a weird black box at the front of indented lines, but I can come back to that later). It’s a complete mess when tangled. The extra blank lines between functions (to make pylint happy with some PEP guideline) have disappeared. I guess I could live with that, but the complete failure to preserve indention in the penultimate code block is a show stopper: #!/usr/bin/env python3 def a(): print("a") def b(): print("b") def c(): print("c") b() a() if __name__ == "__main__": main() (Also, why is there an extra blank line before the incorrectly indented block?) Is this user error on my part somehow? I suppose I could write my own version of tangle, though I’m not clear if the whitespace is lost in the tangle function or in the Org mode data model. Thoughts? Be seeing you, norm -- Norman Walsh | We discover in ourselves what others http://nwalsh.com/ | hide from us, and we recognize in | others what we hide from | ourselves.--Vauvenargues