[babel] Executing source block which includes another block

[babel] Executing source block which includes another block

[Francesco Pizzolante]

Hi,

Here's a small example where I'm interested both in tangling source blocks and
executing sources blocks in my org buffer:

--8<---------------cut here---------------start------------->8---
* Test

** Common part

#+srcname: common
#+begin_src sh :exports none :results silent
   VAR=ThisIsATest
#+end_src

** My shell script

#+srcname: script
#+begin_src sh :exports results :tangle my-script
   <<common>>
   date
   echo $VAR
#+end_src
--8<---------------cut here---------------end--------------->8---


When I tangle the script block, I correctly get the following my-script.sh
file:

--8<---------------cut here---------------start------------->8---
#!/usr/bin/env sh
# generated by org-babel-tangle
# [[id:a0232b32-0b2c-4105-94ae-8c0f1ca67101][script]]
VAR=ThisIsATest
date
echo $VAR
# script ends here
--8<---------------cut here---------------end--------------->8---


When I try to execute (C-cC-c) the same script block I get the following
result:

--8<---------------cut here---------------start------------->8---
#+results: script
| "sh:" | "line" | "6:" | "syntax"       | "error" | "near" | "unexpected" | "token" | "`newline'" |
| "sh:" | "line" | "6:" | "`<<common>>'" | ""      | ""     | ""           | ""      | ""          |
--8<---------------cut here---------------end--------------->8---

The included <<common>> block should also be executed when executing the
<<script>> block.

Is there another way of doing?

Thanks,
Francesco


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Re: [babel] Executing source block which includes another block

[Dan Davison]

Francesco Pizzolante <fpz@missioncriticalit.com> writes:

> Hi,
>
> Here's a small example where I'm interested both in tangling source blocks and
> executing sources blocks in my org buffer:
>
> * Test
>
> ** Common part
>
> #+srcname: common
> #+begin_src sh :exports none :results silent
>    VAR=ThisIsATest
> #+end_src
>
> ** My shell script
>
> #+srcname: script
> #+begin_src sh :exports results :tangle my-script
>    <<common>>
>    date
>    echo $VAR
> #+end_src
>
>
> When I tangle the script block, I correctly get the following my-script.sh
> file:
>
> #!/usr/bin/env sh
> # generated by org-babel-tangle
> # [[id:a0232b32-0b2c-4105-94ae-8c0f1ca67101][script]]
> VAR=ThisIsATest
> date
> echo $VAR
> # script ends here
>
>
> When I try to execute (C-cC-c) the same script block I get the following
> result:
>
> #+results: script
> | "sh:" | "line" | "6:" | "syntax"       | "error" | "near" | "unexpected" | "token" | "`newline'" |
> | "sh:" | "line" | "6:" | "`<<common>>'" | ""      | ""     | ""           | ""      | ""          |
>
> The included <<common>> block should also be executed when executing the
> <<script>> block.
>
> Is there another way of doing?

Hi Francesco,

Thanks for the very clear example. I believe that adding the :noweb
header argument as below solves your problem. I'm sorry that this is not
yet documented.

Dan

-------------------------------------------------------------------
* Test

** Common part

#+srcname: common
#+begin_src sh :exports none :results silent
   VAR=ThisIsATest
#+end_src

** My shell script

#+srcname: script
#+begin_src sh :exports results :noweb :tangle my-script
   <<common>>
   date
   echo $VAR
#+end_src

#+results: script
| "Thu"         | "Dec" | 10 | "11:15:57" | "EST" | 2009 |
| "ThisIsATest" | ""    | "" | ""         | ""    |   "" |
-------------------------------------------------------------------



>
> Thanks,
> Francesco
>
>
> _______________________________________________
> Emacs-orgmode mailing list
> Please use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode

Re: [babel] Executing source block which includes another block

[Francesco Pizzolante]

Hi Dan,

> Thanks for the very clear example. I believe that adding the :noweb
> header argument as below solves your problem. I'm sorry that this is not
> yet documented.

Indeed, the :noweb header argument solves my problem.
Thanks for the hint.

For my understanding, does it mean that the :noweb header argument is aimed at
doing noweb block replacements when _executing_ source blocks? Is this its
definition?

While this header argument is not needed to do noweb block replacements when
_tangling_. Is this correct?

Thanks.

Francesco


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