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* Bug: org-link-descriptive and org-toggle-link-display [9.4 (9.4-44-g5272d9-elpaplus @ /home/gustavo/.emacs.d/elpa/org-plus-contrib-20201123/)]
@ 2020-11-24 17:44 Gustavo Barros
  0 siblings, 0 replies; only message in thread
From: Gustavo Barros @ 2020-11-24 17:44 UTC (permalink / raw)
  To: emacs-orgmode

Hi All,

there is a scope mismatch in `org-toggle-link-display' between text 
(visibility) properties and the setting of `org-link-descriptive'.  The 
text properties are set for the buffer with either 
`remove-from-invisibility-spec' or `add-to-invisibility-spec', but the 
value of `org-link-descriptive` is set globally with `(setq 
org-link-descriptive (not org-link-descriptive))'.  It is not a big 
deal, but it does lead to a glitch in `org-toggle-link-display'.

It is easy to generate an ECM to trigger the glitch:

- Start `emacs -Q'
- Load the latest:
  #+begin_src emacs-lisp
  (add-to-list 'load-path "~/.emacs.d/elpa/org-plus-contrib-20201123")

- Open two Org buffers "*Buffer 1*" with contents:
  #+begin_src org
  [[][Org mode for Emacs]]
- And "*Buffer 2*" with contents:
  #+begin_src org
  [[][Hello Worg, the Org-Mode Community!]]
- It's probably easier to visualize if you have both windows in view in 
  a split frame, but it should not change the result whatever you do.
- The initial state, as per defaults, is that links are invisible in 
  both buffers.

- Go to "*Buffer 1*" and `M-x org-toggle-link-display', and links are 
  made visible in that buffer, but not in "*Buffer 2*".

- Now, go to "*Buffer 2*" and call `M-x org-toggle-link-display' there. 
  It doesn't work.  Call it again.  Now it does.

What's happening is that, when we call `org-toggle-link-display' in 
"*Buffer 1*" we set `org-link-descriptive' to nil globally, so that when 
we move to "*Buffer 2*", Org thinks the links are visible, and when we 
call `org-toggle-link-display' then, Org will try to "re-hide" the links 
that are already invisible, with no apparent effect.  But, in doing so, 
it also sets `org-link-descriptive' to t again, also globally.  And so a 
second call will work.

I don't know if it's better to make `org-link-descriptive' buffer-local, 
or to simply use `setq-local' in `org-toggle-link-display'.  Either way, 
it is a low hanging one.

Best regards,

Emacs  : GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 
3.24.20, cairo version 1.16.0)
 of 2020-08-11
Package: Org mode version 9.4 (9.4-44-g5272d9-elpaplus @ 

current state:
 org-src-mode-hook '(org-src-babel-configure-edit-buffer 
 org-link-shell-confirm-function 'yes-or-no-p
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 org-link-descriptive nil
 org-mode-hook '(#[0 "\300\301\302\303\304$\207" [add-hook 
 change-major-mode-hook org-show-all append local] 5]
		 #[0 "\300\301\302\303\304$\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 
 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-babel-pre-tangle-hook '(save-buffer)
 org-tab-first-hook '(org-babel-hide-result-toggle-maybe 
 org-agenda-loop-over-headlines-in-active-region nil
 org-src-lang-modes '(("redis" . redis) ("php" . php) ("arduino" 
 . arduino) ("C" . c) ("C++" . c++)
		      ("asymptote" . asy) ("bash" . sh) ("beamer" 
		      . latex) ("calc" . fundamental) ("cpp" . c++)
		      ("ditaa" . artist) ("dot" . fundamental) ("elisp" 
		      . emacs-lisp) ("ocaml" . tuareg)
		      ("screen" . shell-script) ("shell" . sh) ("sqlite" 
		      . sql))
 org-occur-hook '(org-first-headline-recenter)
 org-cycle-hook '(org-cycle-hide-archived-subtrees 
 org-cycle-hide-drawers org-cycle-show-empty-lines
 org-speed-command-hook '(org-speed-command-activate 
 org-export-before-parsing-hook '(org-attach-expand-links)
 org-confirm-shell-link-function 'yes-or-no-p
 org-link-parameters '(("attachment" :follow org-attach-follow :complete 
		       ("id" :follow org-id-open) ("eww" :follow 
		       org-eww-open :store org-eww-store-link)
		       ("rmail" :follow org-rmail-open :store 
		       ("mhe" :follow org-mhe-open :store 
		       ("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)
		       ("gnus" :follow org-gnus-open :store 
		       ("docview" :follow org-docview-open :export 
		       org-docview-export :store
		       ("bibtex" :follow org-bibtex-open :store 
		       ("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") 
		       ("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) ("file" 
		       :complete org-link-complete-file)
		       ("elisp" :follow org-link--open-elisp) ("doi" 
		       :follow org-link--open-doi))
 org-link-elisp-confirm-function 'yes-or-no-p

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2020-11-24 17:44 Bug: org-link-descriptive and org-toggle-link-display [9.4 (9.4-44-g5272d9-elpaplus @ /home/gustavo/.emacs.d/elpa/org-plus-contrib-20201123/)] Gustavo Barros

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