[O] Bug: org-babel-expand-noweb-references is very slow [9.1.9 (release_9.1.9-65-g5e4542 @ /usr/share/emacs/26.3/lisp/org/)]

[Vladimir Nikishkin]

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.
------------------------------------------------------------------------

Hello, everyone.

The mwe would be like:

#+begin_src scheme :exports both :results output :noweb-ref bug1
#+end_src
#+begin_src scheme :exports both :results output :noweb-ref bug2
#+end_src
#+begin_src scheme :exports both :results output :noweb-ref bug3
#+end_src
#+begin_src scheme :exports both :results output :noweb-ref bug4
#+end_src
#+begin_src scheme :exports both :results output :noweb-ref bug5
#+end_src
#+begin_src scheme :exports both :results output :noweb-ref bug6
#+end_src
#+begin_src scheme :exports both :results output :noweb-ref bug7
#+end_src
#+begin_src scheme :exports both :results output :noweb-ref bug8
#+end_src
#+begin_src scheme :exports both :results output
<<bug1>>
<<bug2>>
<<bug3>>
<<bug4>>
<<bug5>>
<<bug6>>
<<bug7>>
<<bug8>>
#+end_src

C-c C-v C-v is already very slow, takes ~15 seconds to resolve the references
(can be seen in the Emacs Profiler), even though the inclusion graph is
very simple.

Emacs  : GNU Emacs 26.3 (build 1, x86_64-slackware-linux-gnu, GTK+ Version 
3.24.10)
 of 2019-08-30
Package: Org mode version 9.1.9 (release_9.1.9-65-g5e4542 @ 
/usr/share/emacs/26.3/lisp/org/)

current state:
==============
(setq
 org-src-mode-hook '(org-src-babel-configure-edit-buffer 
org-src-mode-configure-edit-buffer)
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-babel-after-execute-hook '((lambda nil
                                 (if org-inline-image-overlays
                                  (progn (org-redisplay-inline-images)))
                                 )
                                )
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 org-html-format-inlinetask-function 
'org-html-format-inlinetask-default-function
 org-pretty-entities t
 org-odt-format-headline-function 'org-odt-format-headline-default-function
 org-agenda-files '("~/DevLinux/chibi-sicp/index.org" 
"~/Personal_Planner/Planner.org")
 org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default
 org-modules '(org-habits org-w3m org-bbdb org-bibtex org-docview org-gnus 
org-info org-irc
               org-mhe org-rmail)
 org-plantuml-jar-path "/usr/local/bin/plantuml.jar"
 org-mode-hook '(turn-on-org-cdlatex (lambda nil (imenu-add-to-menubar "Imenu"))
                 #[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook org-show-block-all append 
local] 5]
                 #[0 "\300\301\302\303\304$\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)
 org-odt-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"]
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn 
ENTRY)"]
 org-latex-format-drawer-function #[514 "\207" [] 3 "\n\n(fn _ CONTENTS)"]
 org-babel-pre-tangle-hook '(save-buffer)
 org-latex-compiler "lualatex"
 org-tab-first-hook '(org-babel-hide-result-toggle-maybe 
org-babel-header-arg-expand)
 org-babel-load-languages '((plantuml . t) (C . t) (scheme . t) (latex . t))
 org-log-done 'time
 org-startup-align-all-tables t
 org-ascii-format-drawer-function #[771 "\207" [] 4 "\n\n(fn NAME CONTENTS 
WIDTH)"]
 org-catch-invisible-edits t
 org-occur-hook '(org-first-headline-recenter)
 org-edit-src-auto-save-idle-delay 15
 org-agenda-include-diary t
 org-structure-template-alist '(("E"
                                 "#+begin_src elisp :exports both :results 
output\n?\n#+end_src")
                                ("SV"
                                 "#+begin_src scheme :exports both :results 
value\n?\n#+end_src")
                                ("SO"
                                 "#+begin_src scheme :exports both :results 
output\n?\n#+end_src")
                                ("p"
                                 "#+begin_src plantuml :exports both :file ? 
\n#+end_src ")
                                ("s" "#+BEGIN_SRC ?\n\n#+END_SRC")
                                ("e" "#+BEGIN_EXAMPLE\n?\n#+END_EXAMPLE")
                                ("q" "#+BEGIN_QUOTE\n?\n#+END_QUOTE")
                                ("v" "#+BEGIN_VERSE\n?\n#+END_VERSE")
                                ("V" "#+BEGIN_VERBATIM\n?\n#+END_VERBATIM")
                                ("c" "#+BEGIN_CENTER\n?\n#+END_CENTER")
                                ("C" "#+BEGIN_COMMENT\n?\n#+END_COMMENT")
                                ("l" "#+BEGIN_EXPORT latex\n?\n#+END_EXPORT")
                                ("L" "#+LaTeX: ")
                                ("h" "#+BEGIN_EXPORT html\n?\n#+END_EXPORT") 
("H" "#+HTML: ")
                                ("a" "#+BEGIN_EXPORT ascii\n?\n#+END_EXPORT")
                                ("A" "#+ASCII: ") ("i" "#+INDEX: ?")
                                ("I" "#+INCLUDE: %file ?"))
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
                  org-cycle-show-empty-lines 
org-optimize-window-after-visibility-change)
 org-edit-src-turn-on-auto-save t
 org-speed-command-hook '(org-speed-command-activate 
org-babel-speed-command-activate)
 org-hierarchical-todo-statistics nil
 org-odt-format-inlinetask-function 'org-odt-format-inlinetask-default-function
 org-babel-tangle-lang-exts '(("latex" . "tex") ("D" . "d") ("C++" . "cpp")
                              ("emacs-lisp" . "el") ("elisp" . "el"))
 org-format-latex-options '(:foreground default :background default :scale 2.0
                            :html-foreground "Black" :html-background 
"Transparent"
                            :html-scale 1.0 :matchers ("begin" "$1" "$" "$$" 
"\\(" "\\["))
 org-confirm-shell-link-function 'yes-or-no-p
 org-link-parameters '(("id" :follow org-id-open)
                       ("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)
                       ("info" :follow org-info-open :export org-info-export 
:store
                        org-info-store-link)
                       ("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) ("file+sys") 
("file+emacs")
                       ("doi" :follow org--open-doi-link)
                       ("elisp" :follow org--open-elisp-link)
                       ("file" :complete org-file-complete-link)
                       ("ftp" :follow (lambda (path) (browse-url (concat "ftp:" 
path))))
                       ("help" :follow org--open-help-link)
                       ("http" :follow (lambda (path) (browse-url (concat 
"http:" path))))
                       ("https" :follow (lambda (path) (browse-url (concat 
"https:" path))))
                       ("mailto" :follow (lambda (path) (browse-url (concat 
"mailto:"; path))))
                       ("news" :follow (lambda (path) (browse-url (concat 
"news:"; path))))
                       ("shell" :follow org--open-shell-link))
 org-latex-format-headline-function 'org-latex-format-headline-default-function
 org-agenda-start-with-follow-mode t
 org-latex-format-inlinetask-function 
'org-latex-format-inlinetask-default-function
 org-html-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"]
 org-image-actual-width nil
 org-html-use-infojs t
 org-html-format-headline-function 'org-html-format-headline-default-function
 org-confirm-babel-evaluate 'my-org-confirm-babel-evaluate
 org-use-speed-commands t
 org-latex-bib-compiler "biber"
 org-default-notes-file "~/org/notes.org"
 )
-- 
--
Vladimir Nikishkin (MiEr, lockywolf)