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Re: [O] File local circular links
From: |
Nicolas Goaziou |
Subject: |
Re: [O] File local circular links |
Date: |
Thu, 03 Sep 2015 16:06:03 +0200 |
Hello,
Michael Brand <address@hidden> writes:
> I use a hack to work around a missing feature that I would like to
> call "file local circular links". It works until
> release_8.2.10-2341-g8094d01 but stops with
> release_8.2.10-2342-gcfe5bc9
>
> commit cfe5bc97f8b18ccbf49d0764746c7563ce8d29da
> Author: Nicolas Goaziou <address@hidden>
> Date: Mon Aug 3 01:06:32 2015 +0200
>
> Fix link search
>
> and I would like to ask for some help to get it work again.
>
> File local circular links does this: C-c C-o on line 1 of the file
>
> -------------------------------------
> [[:file local circular link:]]
> some text
> [[:file local circular link:]]
> -------------------------------------
>
> moves to line 3 and C-c C-o again moves back to line 1. (It does not
> follow all links when there are more than two but this limitation is a
> different story.)
>
> The hack that I used so far is
>
> #+BEGIN_SRC emacs-lisp
> (defun f-org-link-exec (str)
> (let* ((context (org-element-context))
> (link (let ((up (org-element-property :parent context)))
> (if (eq (org-element-type up) 'link) up context)))
> (avoid-pos (org-element-property :begin link)))
> (cond
> ;; [[<<xy>>]]: Remove the angular brackets to let `org-link-search'
> ;; match `str' as an angular bracket link.
> ((string-match "^<<\\(.*\\)>>$" str)
> (let ((org-execute-file-search-functions nil))
> (org-link-search (match-string 1 str) 'dedicated avoid-pos)))
> ;; [[_:xy:]] (abbreviated with "#+LINK: _ file:bla.org:::") or
> ;; [[:xy:]]: Bind `org-link-search-must-match-exact-headline' to nil
> ;; temporarily.
> ((string-match-p "^:.*:$" str)
> (let ((org-execute-file-search-functions nil)
> (org-link-search-must-match-exact-headline nil))
> ;; The leading part may be "[[link_abbreviation" or just "[[".
> (org-link-search (concat "\\[\\[[^:]*" (regexp-quote str) "\\]\\]")
> 'fuzzy avoid-pos))))))
> (add-hook 'org-execute-file-search-functions 'f-org-link-exec)
> #+END_SRC
>
> The problematic part is the use of org-link-search which changed. In
> the above example it is called as
>
> #+BEGIN_SRC emacs-lisp
> (let ((org-execute-file-search-functions nil)
> (org-link-search-must-match-exact-headline nil))
> (org-link-search "\\[\\[[^:]*:file local circular link:\\]\\]"))
> #+END_SRC
>
> and after the commit org-link-search errors with "cond: No match for
> fuzzy expression: \[\[[^:]*:file local circular link:\]\]". To me it
> looks like if support for regular expressions for fuzzy links has been
> dropped. I can not use the regexp search here because it invokes the
> org-occur sparse tree.
I don't know anything like regular expression support for fuzzy links.
> How can I deal with this?
Can't you simply do
(org-link-search ":file local circular link:" (point))
?
You could also use target-links, or define a new type of link that would
trigger a search in the buffer, see `org-add-link-type'.
Regards,
--
Nicolas Goaziou