[BUG] Problems with ':exports result' for shell and plantuml blocks [9.6-pre (release_9.5.5-995-g4b9aef @ /home/dzu/.emacs.d/straight/build/org-mode/)]

[Detlev Zundel]

Hi list,

I am having problems with exporting code blocks to pdf or html
documents.  I noticed the problem with a PlantUML block that I use for
inline diagrams.  As I only want the diagram in the output, I use
':exports result' in the header of the block.  My main target is PDF
output and the PDF looks fine, although I get errors in the '*Org PDF
LaTeX Output*' buffer: 'Error: no lexer for alias 'plantuml' found'.

Looking at the intermediate LaTeX buffer, the code block indeed is also
there, but because of the error does not produce any output in the PDF.

So I tried to shrink the problem down to reproduce the error and there I
found another thing that I do not understand.  To proove that ':exports
result' works, I added two one line shell calls, but to my amazement,
calling 'pwd' also exports the code, but not calling 'date'.  To me
things look identical, so I have no idea why this would happen.

The problems also show when exporting to html, so they seem to be
somewhere in the inner workings of org mode.

Please find attached a short test case showing the problem.  It requires
PlantUML to generate the diagram, but the shell blocks also show a
problem that should be easy to reproduce.

Am I doing something terribly stupid?  How can I make things work, like
I would expect them to?  Any hint greatly appreciated!

Thanks
  Detlev


----8<----------
Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

     https://orgmode.org/manual/Feedback.html#Feedback

Your bug report will be posted to the Org mailing list.
------------------------------------------------------------------------

Emacs  : GNU Emacs 30.0.50 (build 3, x86_64-pc-linux-gnu, GTK+ Version 3.24.36, 
cairo version 1.16.0)
 of 2023-01-31
Package: Org mode version 9.6-pre (release_9.5.5-995-g4b9aef @ 
/home/dzu/.emacs.d/straight/build/org-mode/)

current state:
==============
(setq
 org-link-elisp-confirm-function 'yes-or-no-p
 org-html-table-caption-above nil
 org-ditaa-jar-path "/usr/share/ditaa/ditaa.jar"
 org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn 
ENTRY)"]
 org-babel-after-execute-hook '(org-redisplay-inline-images)
 org-persist-after-read-hook '(org-element--cache-persist-after-read)
 org-export-before-parsing-hook '(org-attach-expand-links)
 org-cycle-tab-first-hook '(org-babel-hide-result-toggle-maybe 
org-babel-header-arg-expand)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-odt-format-inlinetask-function 'org-odt-format-inlinetask-default-function
 org-edit-src-content-indentation 0
 org-ascii-format-drawer-function #[771 "\207" [] 4 "\n\n(fn NAME CONTENTS 
WIDTH)"]
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-show-empty-lines
                  org-cycle-optimize-window-after-visibility-change)
 org-persist-before-read-hook '(org-element--cache-persist-before-read)
 org-mode-hook '(#[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook org-fold-show-all append 
local] 5]
                 #[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook org-babel-show-result-all 
append local] 5]
                 org-babel-result-hide-spec org-babel-hide-all-hashes
                 #[0 "\301\211\207" [imenu-create-index-function 
org-imenu-get-tree] 2]
                 flymake-languagetool-load)
 org-babel-load-languages '((ditaa . t) (dot . t) (emacs-lisp . t) (gnuplot . 
t) (lilypond . t)
                            (plantuml . t) (shell . t) (sparql . t))
 org-latex-format-drawer-function #[514 "\207" [] 3 "\n\n(fn _ CONTENTS)"]
 org-latex-format-headline-function 'org-latex-format-headline-default-function
 org-confirm-shell-link-function 'yes-or-no-p
 org-html-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"]
 outline-isearch-open-invisible-function 'outline-isearch-open-invisible
 org-latex-classes '(("beamer" "\\documentclass[presentation]{beamer}" 
("\\section{%s}" . "\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     ("article" "\\documentclass[11pt]{article}" 
("\\section{%s}" . "\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                      ("\\paragraph{%s}" . "\\paragraph*{%s}")
                      ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))
                     ("report" "\\documentclass[11pt]{report}" ("\\part{%s}" . 
"\\part*{%s}")
                      ("\\chapter{%s}" . "\\chapter*{%s}") ("\\section{%s}" . 
"\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     ("book" "\\documentclass[11pt]{book}" ("\\part{%s}" . 
"\\part*{%s}")
                      ("\\chapter{%s}" . "\\chapter*{%s}") ("\\section{%s}" . 
"\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     )
 org-plantuml-jar-path "/usr/local/share/plantuml/plantuml.jar"
 org-odt-format-headline-function 'org-odt-format-headline-default-function
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-latex-packages-alist '(("" "minted"))
 org-babel-tangle-lang-exts '(("LilyPond" . "ly") ("rustic" . "rs") 
("emacs-lisp" . "el") ("elisp" . "el"))
 org-src-mode-hook '(org-src-babel-configure-edit-buffer 
org-src-mode-configure-edit-buffer)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-latex-src-block-backend 'minted
 org-clock-idle-time 15
 org-speed-command-hook '(org-speed-command-activate 
org-babel-speed-command-activate)
 org-html-format-inlinetask-function 
'org-html-format-inlinetask-default-function
 org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default
 org-odt-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"]
 org-confirm-babel-evaluate nil
 org-fold-core-isearch-open-function 'org-fold--isearch-reveal
 org-latex-format-inlinetask-function 
'org-latex-format-inlinetask-default-function
 org-persist-before-write-hook '(org-element--cache-persist-before-write)
 org-tab-first-hook '(org-babel-hide-result-toggle-maybe 
org-babel-header-arg-expand)
 org-link-shell-confirm-function 'yes-or-no-p
 org-babel-pre-tangle-hook '(save-buffer)
 org-agenda-loop-over-headlines-in-active-region nil
 org-occur-hook '(org-first-headline-recenter)
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-link-parameters '(("attachment" :follow org-attach-follow :complete 
org-attach-complete-link)
                       ("treemacs" :store treemacs-store-org-link) ("id" 
:follow org-id-open)
                       ("eww" :follow org-eww-open :store org-eww-store-link)
                       ("rmail" :follow org-rmail-open :store 
org-rmail-store-link)
                       ("mhe" :follow org-mhe-open :store org-mhe-store-link)
                       ("irc" :follow org-irc-visit :store org-irc-store-link 
:export org-irc-export)
                       ("info" :follow org-info-open :export org-info-export 
:store org-info-store-link
                        :insert-description org-info-description-as-command)
                       ("gnus" :follow org-gnus-open :store org-gnus-store-link)
                       ("docview" :follow org-docview-open :export 
org-docview-export :store
                        org-docview-store-link)
                       ("bibtex" :follow org-bibtex-open :store 
org-bibtex-store-link)
                       ("bbdb" :follow org-bbdb-open :export org-bbdb-export 
:complete
                        org-bbdb-complete-link :store org-bbdb-store-link)
                       ("w3m" :store org-w3m-store-link)
                       ("doi" :follow org-link-doi-open :export 
org-link-doi-export) ("file+sys")
                       ("file+emacs") ("shell" :follow org-link--open-shell)
                       ("news" :follow
                        #[514 "\301\300\302Q\"\207" ["news" browse-url ":"] 6 
"\n\n(fn URL ARG)"])
                       ("mailto" :follow
                        #[514 "\301\300\302Q\"\207" ["mailto" browse-url ":"] 6 
"\n\n(fn URL ARG)"])
                       ("https" :follow
                        #[514 "\301\300\302Q\"\207" ["https" browse-url ":"] 6 
"\n\n(fn URL ARG)"])
                       ("http" :follow
                        #[514 "\301\300\302Q\"\207" ["http" browse-url ":"] 6 
"\n\n(fn URL ARG)"])
                       ("ftp" :follow
                        #[514 "\301\300\302Q\"\207" ["ftp" browse-url ":"] 6 
"\n\n(fn URL ARG)"])
                       ("help" :follow org-link--open-help :store 
org-link--store-help)
                       ("file" :complete org-link-complete-file) ("elisp" 
:follow org-link--open-elisp))
 org-html-format-headline-function 'org-html-format-headline-default-function
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-agenda-include-diary t
 org-startup-with-inline-images t
 org-log-note-clock-out t
 org-latex-pdf-process '("%latex -shell-escape -interaction nonstopmode 
-output-directory %o %f" "bibtex %b"
                         "%latex -shell-escape -interaction nonstopmode 
-output-directory %o %f"
                         "%latex -shell-escape -interaction nonstopmode 
-output-directory %o %f")
 org-src-lang-modes '(("dot" . graphviz-dot) ("rust" . rustic) ("C" . c) ("C++" 
. c++) ("asymptote" . asy)
                      ("bash" . sh) ("beamer" . latex) ("calc" . fundamental) 
("cpp" . c++)
                      ("ditaa" . artist) ("desktop" . conf-desktop) ("dot" . 
fundamental)
                      ("elisp" . emacs-lisp) ("ocaml" . tuareg) ("screen" . 
shell-script) ("shell" . sh)
                      ("sqlite" . sql) ("toml" . conf-toml))
 org-clock-into-drawer "LOGBOOK"
 )


#+latex_header: \usepackage{multicol}
#+latex_header: \usepackage[inkscapelatex=false]{svg}
* Different use cases
** Current work directory

#+begin_src sh :exports result :eval never-export
pwd
#+end_src

#+RESULTS:
: /home/dzu/ebv/doc/ebv/presentations/zephyr-org

** Time

#+begin_src sh :exports results :eval never-export
date
#+end_src

#+RESULTS:
: Do 9. Feb 22:22:01 CET 2023

** Current work directory

#+begin_src sh :exports result :eval never-export
pwd
#+end_src

#+RESULTS:
: /home/dzu/ebv/doc/ebv/presentations/zephyr-org


** PlantUML diagram

#+begin_src plantuml :exports result :file ob-dtsi.svg
@startmindmap
+ imx8mm-ddr4-evk.dts
++ imx8mm-evk.dtsi
+++ imx8mm.dtsi
++++ i.MX8M Mini description
+++ EVK specifications
++ DDR4 specifications
@endmindmap
#+end_src

#+RESULTS:
[[file:ob-dtsi.svg]]