[Orgmode] org-babel-tangle indentation
Hi, I've been using org-babel for a couple of weeks now and I really like it for programming. One thing I've noticed, though, is that source blocks are not indented when they are output by org-babel-tangle. This makes the output source hard to read, and incorrect for languages where indentation is important. For example, the following bit of python does not compile when tangled. --8---cut here---start-8--- * Introduction This is some intro text. #+srcname: the first block #+begin_src python :tangle foo :exports none print '1 + 1' if 1 + 1 == 2: print 'oh no' else: # do the other thing #+end_src Some more text. #+srcname: do the other thing #+begin_src python :tangle no :exports none print 'oh yes' #+end_src --8---cut here---end---8--- My preference would be for source blocks to be indented to the level of the comment that caused them to be inserted. Cheers, Chris ___ Emacs-orgmode mailing list Remember: use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode
Re: [Orgmode] org-babel-tangle indentation
Hi Chris, You have touched upon a true limitation in the current tangle functionality. I think this issue has two parts (one of which you address below). 1) it is impossible to specify a piece of heavily indented code in a source-code block. For example --8---cut here---start-8--- #+begin_src python 9 #+end_src --8---cut here---end---8--- will always be exported as --8---cut here---start-8--- 9 --8---cut here---end---8--- because Org-babel strips off any leading spaces. This problem is exacerbated by the fact that C-' org-edit-special also strips off leading spaces. 2) There is no way to specify the level at which the contents of a source block should be indented. You provided a good solution to this second issue below, and I'm adding it to the org-babel task stack. Thanks -- Eric Chris Gray chrismg...@gmail.com writes: Hi, I've been using org-babel for a couple of weeks now and I really like it for programming. One thing I've noticed, though, is that source blocks are not indented when they are output by org-babel-tangle. This makes the output source hard to read, and incorrect for languages where indentation is important. For example, the following bit of python does not compile when tangled. * Introduction This is some intro text. #+srcname: the first block #+begin_src python :tangle foo :exports none print '1 + 1' if 1 + 1 == 2: print 'oh no' else: # do the other thing #+end_src Some more text. #+srcname: do the other thing #+begin_src python :tangle no :exports none print 'oh yes' #+end_src My preference would be for source blocks to be indented to the level of the comment that caused them to be inserted. Cheers, Chris ___ Emacs-orgmode mailing list Remember: use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode ___ Emacs-orgmode mailing list Remember: use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode
Re: [Orgmode] org-babel-tangle indentation
Chris, Eric -- Coincidentally, I think the email I just sent to the list provides a solution to these issues. I've also been using org-babel-tangle to write a python program this week. I've been finding it very helpful merely using basic org mode features such as folding and restructuring to organise and navgigate the code (same with my emacs config files). See below for notes on tangling your python example. Eric Schulte schulte.e...@gmail.com writes: Hi Chris, You have touched upon a true limitation in the current tangle functionality. I think this issue has two parts (one of which you address below). 1) it is impossible to specify a piece of heavily indented code in a source-code block. For example #+begin_src python 9 #+end_src will always be exported as 9 because Org-babel strips off any leading spaces. This problem is exacerbated by the fact that C-' org-edit-special also strips off leading spaces. With org-src-preserve-indentation set to t, the leading spaces are removed neither by C-c ' nor during org-babel-tangle. org-src-preserve-indentation can be set globally or as a buffer local variable. 2) There is no way to specify the level at which the contents of a source block should be indented. You provided a good solution to this second issue below, and I'm adding it to the org-babel task stack. With org-src-preserve-indentation, as long as the indentation is correct in the org file, it will be correct in the tangled output. So in order to produce correct python code from Chris's example, it has to have the correct indentation in the org buffer, i.e. --8---cut here---start-8--- * Introduction This is some intro text. #+srcname: the first block #+begin_src python :tangle foo :exports none print '1 + 1' if 1 + 1 == 2: print 'oh no' else: # do the other thing #+end_src Some more text. #+srcname: do the other thing #+begin_src python :tangle no :exports none print 'oh yes' #+end_src --8---cut here---end---8--- Chris, I have not implemented your suggestion regarding the indentation of noweb referenced blocks, but I think it would be sensible behaviour when org-src-preserve-indentation is nil. Dan For example, the following bit of python does not compile when tangled. * Introduction This is some intro text. #+srcname: the first block #+begin_src python :tangle foo :exports none print '1 + 1' if 1 + 1 == 2: print 'oh no' else: # do the other thing #+end_src Some more text. #+srcname: do the other thing #+begin_src python :tangle no :exports none print 'oh yes' #+end_src My preference would be for source blocks to be indented to the level of the comment that caused them to be inserted. Cheers, Chris ___ Emacs-orgmode mailing list Remember: use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode ___ Emacs-orgmode mailing list Remember: use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode ___ Emacs-orgmode mailing list Remember: use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode
