Here is the complete minimal example, as the HTML exported version of the email
did not include org markup:
Tangling a source block that contains a variable from another source block
results in an additional incorrect new line at the end of the variable value in
the tangled output file, /only/ when source block output type is set to
'drawer'.
Here is a minimal example comparing regular source block output (correct)
versus drawer output (error), tested with emacs -Q, GNU Emacs 31.0.50 (build 1,
x86_64-pc-linux-gnu, GTK+ Version 3.24.33, cairo version 1.16.0) of 2025-05-27
and Org 9.7.11:
* Allow org blocks to evaluate shell code
#+begin_src elisp :tangle no :results output none
(org-babel-do-load-languages
'org-babel-load-languages
'((shell . t)))
#+end_src
* Tangle code block with variable input from other source block
** Using regular source block output
*** Source block that generates the variable
#+name: my_temp_dir1
#+begin_src bash :tangle no
echo "/example/path"
#+end_src
#+RESULTS: my_temp_dir1
: /example/path
*** Source block that takes in the variable and which gets tangled
#+begin_src sh :var idir=my_temp_dir1 :tangle test_default.sh
echo "${idir}"
#+end_src
*** Display the tangled block
#+begin_src sh :tangle no :results output drawer
cat test_default.sh
#+end_src
#+RESULTS:
:results:
idir='/example/path'
echo "${idir}"
:end:
Looks okay!
** Using drawer source block output
*** Source block that generates the variable
#+name: my_temp_dir2
#+begin_src bash :tangle no :results output drawer
echo "/example/path"
#+end_src
#+RESULTS: my_temp_dir2
:results:
/example/path
:end:
*** Source block that takes in the variable and which gets tangled
#+begin_src sh :var idir=my_temp_dir2 :tangle test_drawer.sh
echo "${idir}"
#+end_src
*** Display the tangled block
#+begin_src sh :tangle no :results output drawer
cat test_drawer.sh
#+end_src
#+RESULTS:
:results:
idir='/example/path
'
echo "${idir}"
:end:
We have a problem: the closing quote starts on a new line.
Best,
Vincent
On 2025-08-08 at 15:20 -06, Vincent Koppelmans <[email protected]>
wrote...
> Hello org mode developers and experts,
>
> I encountered the following issue which I believe may be an org mode bug:
>
> Tangling a source block that contains a variable from another source block
> results in an additional incorrect new line at the end of the variable value
> in the tangled output file, /only/ when source block output type is set to
> 'drawer'.
>
> Here is a minimal example comparing regular source block output (correct)
> versus drawer output (error), tested with emacs -Q, GNU Emacs 31.0.50 (build
> 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.33, cairo version 1.16.0) of
> 2025-05-27 and Org 9.7.11:
>
>
> Allow org blocks to evaluate shell code
> =======================================
>
> ,----
> | (org-babel-do-load-languages
> | 'org-babel-load-languages
> | '((shell . t)))
> `----
>
>
> Tangle code block with variable input from other source block
> =============================================================
>
> Using regular source block output
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Source block that generates the variable
> ----------------------------------------
>
> ,----
> | echo "/example/path"
> `----
>
>
> Source block that takes in the variable and which gets tangled
> --------------------------------------------------------------
>
> ,----
> | echo "${idir}"
> `----
>
>
> Display the tangled block
> -------------------------
>
> ,----
> | cat test_default.sh
> `----
>
> Looks okay!
>
>
> Using drawer source block output
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Source block that generates the variable
> ----------------------------------------
>
> ,----
> | echo "/example/path"
> `----
>
>
> Source block that takes in the variable and which gets tangled
> --------------------------------------------------------------
>
> ,----
> | echo "${idir}"
> `----
>
>
> Display the tangled block
> -------------------------
>
> ,----
> | cat test_drawer.sh
> `----
>
> We have a problem: the closing quote starts on a new line.
>
> Best,
>
> Vincent
