My bad, wrong manipulation. Here is the patch.
To reproduce the error, you can type the following in a fresh Org
#+begin_src org
target some text <<<target>>> another text target
#+end_src
Using C-c C-o on any of the two links will return an error.
Regards,
>From f7738f3e9239fc4fddccc7850dad7a0936087a58 Mon Sep 17 00:00:00 2001
From: Nicolas Goaziou <n.goaziou@gmail.com>
Date: Sat, 19 Feb 2011 09:37:48 +0100
Subject: [PATCH] Fix bug with link to radio target at beginning or end of buffer
* lisp/org.el (org-open-at-point): if a link to a radio target is the
first, (resp. the last), element of a buffer, function cannot find
the property change required to get its boundaries, and
`buffer-substring' is called with an invalid nil argument.
* lisp/org.el (org-ctrl-c-ctrl-c): call `org-list-send-list' only when
cursor it at very first item of the list, as specified in the
manual. Also refactored the list part of the function a bit.
* lisp/org.el (org-toggle-item, org-toggle-heading): make sure every
sub-item in a list is changed into a sub-heading and sub-headings
are translated into sub-items. Also ignore inline tasks in the
process.
org-toggle-item on headlines preserves hierarchy
* lisp/org.el (org-set-autofill-regexps): use `org-item-re' in
`paragraph-start' to recognize alphabetical lists.
(org-fill-paragraph): enforce a pre-computed fill-prefix before
calling fill-paragraph when point in in an item. Also prevent
paragraphs getting merged into an adjacent list upon filling.
(org-adaptive-fill-function): make sure to determine real fill-prefix
for auto-fill.
(org-auto-fill-function): use a pre-computed fill-prefix before
calling do-auto-fill.
* lisp/org-list.el (org-list-item-body-column): new function
* lisp/org-inlinetask.el (org-inlinetask-at-task-p,
org-inlinetask-toggle-visibility): new functions.
* lisp/org-list.el (org-list-set-item-visibility): new function.
* lisp/org.el (org-cycle, org-cycle-internal-local): separate lists
and inline tasks from headlines.
(org-outline-level): do not consider lists as headlines.
Cycling visibility is using different tools.
* lisp/org-list.el (org-list-struct): mark items less indented than
top item of the list, so that they will be modified.
(org-list-struct-apply-struct): compare struct's indentation with
line's indentation instead of old-struct's. This is needed because
`org-list-struct' automatically fixes indentation so changes might not
be seen otherwise.
* lisp/org.el (org-ctrl-c-ctrl-c): small refactoring.
* lisp/org-list.el (org-list-struct-apply-struct): inline tasks along
with their content must stay at column 0 even if the item is gaining
indentation. Moreover, fix indentation of text in an inline task,
now it can be in such a task within a list.
* lisp/org-list.el (org-at-item-p): also verify context is valid.
Otherwise it would recognize valid items where org-in-item-p
wouldn't.
(org-in-item-p, org-list-struct-apply-struct): use shorter version of
org-at-item-p.
(org-cycle-list-bullet): fix typo.
(org-list-parse-list): avoid calling org-at-item-p two times by using
an appropriate regexp
* lisp/org.el (org-indent-line-function): use an appropriate regexp
instead of calling org-at-item-p two times.
* lisp/org.el (org-toggle-item): when used on normal text, ensure
every line in region is included in the new item, regardless of its
original indentation.
* lisp/org.el (org-toggle-item): Now accepts a prefix argument. When
used without argument on normal text, it will make the whole region
one item. With an argument, it defaults to old behavior: change each
line in region into an item.
* lisp/org.el (org-return): when called from inside an item with the
indent flag, function should keep text moved inside the item. This
allows to use C-j to separate lines in an item: cursor won't go back
to column 0.
* lisp/org-list.el (org-alphabetical-lists): new variable
(org-item-re, org-list-full-item, org-cycle-list-bullet,
org-list-struct-fix-bul, org-list-inc-bullet-maybe): reflect
introduction of the new variable.
(org-item-beginning-re): changed into a function, so any modification
of `org-alphabetical-lists' will not require reloading Org.
(org-at-item-p, org-toggle-checkbox, org-update-checkbox-count,
org-list-parse-list, org-list-send-list): reflect changes to
`org-item-beginning-re'.
(org-list-use-alpha-bul-p): new function.
* lisp/org.el (org-check-for-hidden): reflect changes to
`org-item-beginning-re'.
* lisp/org-capture.el (org-capture-place-item): reflect changes to
`org-item-beginning-re'.
* lisp/org-docbook.el (org-export-docbook-list-line): handle new type
of items.
* lisp/org-exp.el (org-export-mark-list-end,
org-export-mark-list-properties): reflect changes to
`org-item-beginning-re'.
* lisp/org-html.el (org-html-export-list-line): handle new type of
items.
* lisp/org-latex.el (org-export-latex-lists): handle new type of items
and reflect changes to `org-item-beginning-re'.
* lisp/org-ascii.el (org-export-ascii-preprocess): handle new counters.
Modified from a patch by Nathaniel Flath.
When the function needs to know if cursor is in a plain list and move
to item beginning if it is the case, a fast way is to ignore errors on
(goto-char (org-in-item-p)).
* lisp/org.el (org-get-string-indentation): moved in generally useful
functions section, as it wasn't specific to plain lists and that no
code was using it in org-list.el.
* lisp/org.el (org-skip-over-state-notes,org-store-log-note): use new
accessors.
* list/ob.el (org-babel-result-end): use new accessors.
* list/org-exp.el (org-export-mark-list-ending): use new accessors.
* org.el (org-indent-line-function): Indentation of item's body starts
just after the bullet, not after a checkbox. Moreover, As
`org-in-item-p' also returns item beginning position when point is
in a list, do not compute it a second time.
* org.el (org-ctrl-c-ctrl-c): when called at a list item, replace
usage `org-repair-list', forcing another reading of the list, with
only needed subroutines.
* org.el (org-link-unescape): Simpler algorithm for replacing percent
escapes.
(org-link-unescape-compound): Use cond statements instead of nested
if, convert hex string with string-to-number, save match data.
(org-link-unescape-single-byte-sequence): Use mapconcat and
string-to-number for unescaping single byte sequence.
* org.el (org-link-escape-chars, org-link-escape-chars-browser): New
format of percent escape table.
(org-link-escape): Use new table format.
Just a plain list with the chars that should be escaped.
* org-exp.el (org-export-preprocess-string): Set the source
buffer and use `org-clone-local-variables' to get local
variables from it.
* org.el (org-clone-local-variables): New function.
* lisp/org.el (org-open-at-point): Fix bug when using prefix arg to
construct `org-link-search' call. Rename prefix arg with a more
generic name, to reflect its diverse uses in this function.
* lisp/org.el (org-entry-get): Don't look for a property drawer if we
are before the first heading in the file.
(org-entry-get-with-inheritance): Don't attempt to move up the tree if
we are before the first heading in the file. Also, enclose less of the
function in the save-excursion.
* org.el (org-update-parent-todo-statistics): fix bug when
updating statistics from the column view.
This was reported by James Deaton and confirmed by Bernt Hansen.
Bastien Guerry
Carsten Dominik
Nicolas Goaziou
David Maus
Dan Davison
Tom Dye
Eric Schulte