Re: Feature Request: Allow Tangling Named INCLUDEs

[Eric Schulte <schulte.eric@gmail.com>]

Nick Daly <nick.m.daly@gmail.com> writes:

> Hi folks, I have a situation where I have many named code snippets
> currently available in external files, and would like to tangle them
> into an Org mode file.  Is it currently possible to tangle included
> files?  If not, could that feature be added to a new version of Org
> mode?  I've looked through the mailing list history a bit and couldn't
> find this specific request.
>
> - What exactly did you do? :: I created the three files shown below.
>      I then tangled the searches.org file (~C-c C-v C-t~).
>
>      For convenience, all three files can be created by tangling this
>      email.
>
> - What did you expect to happen? :: I expected the contents of the files
>      searchItems(8|12).m to appear in lines [[search-08][(search-08)]]
>      and [[search-12][(search-12)]].
>
> - What happened instead? :: The templates on lines
>      [[search-08][(search-08)]] and [[search-12][(search-12)]] were
>      empty.
>

The following function works for me on a simple example file.

    ;; -*- emacs-lisp -*-
    (defun trial-expand-and-tangle ()
      (interactive)
      (save-window-excursion
        (let ((text (buffer-string))
              (org-babel-pre-tangle-hook nil))
          (unwind-protect
              (progn
                (org-export-expand-include-keyword)
                (org-babel-tangle))
            (delete-region (point-min) (point-max))
            (goto-char (point-min))
            (insert text)))))

I'm not sure if this is common enough to have functionality added to the
core.  Maybe adding a `with-expanded-includes' macro would be useful
though.

Best,

>
> Thanks for your time,
> Nick
>
> ----
>
> If you don't understand the code below, that's because it's MUMPS.  Be
> happy that you don't understand.
>
> #+begin_src org :noweb tangle :tangle searches.org -s -n :padline no
>   ,# -*- mode: org -*-
>   ,* Searches
>
>   ,#+name: search-main
>   ,#+begin_src text :noweb tangle :tangle searchAllItems.m
>   ,  searches(pId)
>   ,    n pDate,i08,i12
>   ,    f  pDate=$$idForwardDate(pId,pDate) q:pDate=""  d
>   ,    . <<searchItem08>>          ; (ref:search-08)
>   ,    . <<searchItem12>>          ; (ref:search-12)
>   ,    . ; and about 30 more of these named searches.
>   ,#+end_src
>
>   ,#+name: searchItem08
>   ,#+INCLUDE: "searchItem08.m" src text
>
>   ,#+name: searchItem12
>   ,#+INCLUDE: "searchItem12.m" src text
>
> #+end_src
> #+begin_src text :tangle searchItem08.m :padline no
>   s i08=$$zgetnp(pId,pDate,08) i i08="" d LogIcErr("i08",i08)
> #+end_src
> #+begin_src text :tangle searchItem12.m :padline no
>   s i12=$$zgetnp(pId,pDate,12) i $$zgetnp(pId,pDate,$$zgetnp(pId,pDate,i12))'=i12 d LogIcErr("i12",i12)
> #+end_src

-- 
Eric Schulte
https://cs.unm.edu/~eschulte
PGP: 0x614CA05D