[O] Bug: org-clock-display conflicts link display in headline [9.1.9 (release_9.1.9-65-g5e4542 @ /usr/share/emacs/26.1/lisp/org/)]

[杨圣]

--text follows this line--

I was trying the beloved clock feature of org-mode, and tried
`org-clock-display` on an org file. A total time is added to each
headline as expected, but it is not the case for headlines with a link
in it. The whole link is displayed as if `org-toggle-link-display` is
called.

Minimum file to reproduce the problem:

* [[https://www.google.com][google]]
    :LOGBOOK:
    CLOCK: [2018-06-03 Sun 22:15]--[2018-06-03 Sun 22:25] =>  0:10
    :END:

Steps to reproduce:
  1. Open an org file whose headline contains link
  2. Add some clock for this headline
  3. Call `org-clock-display`

Expected behavior:

  Looks like:

* google ......................................................10
    :LOGBOOK:...

What I get:

* [[https://www.google.com][google]] ..........................10
    :LOGBOOK:...

Note: If I call `org-clock-remove-overlay` to remove clock display, the
clock displayed is removed, and link display is restored.

What I tried: looking into the function `org-toggle-link-display` and
`org-clock-display` to see what is actually happening underneath, and
how are they implemented. org-link seems to be using `font-lock-mode`,
while `org-clock-display` is using overlay, both of which I am not
familiar with. I also tried vanilla Emacs with ~emacs -Q~, but problem
persists. I also tried calling `org-restart-font-lock` manually after
 `org-clock-display` is called, which is what is called in
`org-toggle-link-display`, but links are still in its full form.

------------------------------------------------------------------------



Emacs  : GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
 of 2018-05-29
Package: Org mode version 9.1.9 (release_9.1.9-65-g5e4542 @
/usr/share/emacs/26.1/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-metadown-hook '(org-babel-pop-to-session-maybe)
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 org-mode-hook '(#[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-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-babel-header-arg-expand)
 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-optimize-window-after-visibility-change)
 org-speed-command-hook '(org-speed-command-activate
              org-babel-speed-command-activate)
 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))
 )


-- 
Sheng Yang(杨圣)
PhD student
Computer Science Department
University of Maryland, College Park
E-mail:address@hidden