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Re: [Orgmode] [ANN] Changes to lists

From: Carsten Dominik
Subject: Re: [Orgmode] [ANN] Changes to lists
Date: Mon, 24 Jan 2011 08:50:47 +0100

Hi Nicolas,

this is very impressive.  Thanks so much for bringing
back sublists with intersected text.

    In original patch, bullet type was passed to HTML and DocBook
    exporters. I removed that part of the code for various reasons:

I am not sure if I understand this.  What was passed through in
the original patch, and what have you changed?

Also a first little thing I have found:

  1. a list
     - a sub-list
     - shslkjg kj
     - dsjkg kajhg
     Some text belonging to main list.
     - and even another sub-list
     - aksjdf alkjshf
     aslkdjf lkjasdflkj aklsjdfh klasj

If I go to the end of the last line and press M-RET it
fails with the backtrace below.  Not sure what it should
do in this case, but my preferred result would be to create the
"2." item for the first list.


- Carsten

Debugger entered--Lisp error: (wrong-type-argument integer-or-marker-p nil)
(let* ((item ...) (item-end ...) (item-end-no-blank ...) (beforep ...) (split-line-p ...) (blank-nb ...) (ind ...) (bullet ...) (box ...) (text-cut ...) (body ...) (item-sep ...) (item-size ...) (size-offset ...)) (goto-char item) (org-indent-to-column ind) (insert body) (insert item-sep) (mapc (lambda ... ...) struct) (push (list item ind bullet nil box nil ...) struct) (setq struct (sort struct ...)) (if beforep (goto-char item) (setq struct ...) (goto- char ...)) struct) (let ((case-fold-search t)) (let* (... ... ... ... ... ... ... ... ... ... ... ... ... ...) (goto-char item) (org-indent-to-column ind) (insert body) (insert item-sep) (mapc ... struct) (push ... struct) (setq struct ...) (if beforep ... ... ...) struct)) org-list-insert-item(215 ((15 2 "1. " nil nil nil 216) (27 5 "- " nil nil nil 45) (45 5 "- " nil nil nil 63) (63 5 "- " nil nil nil 82) (121 5 "- " nil nil nil 154) (154 5 "- " nil nil nil 177)) ((15) (27) (45 . 27) (63 . 45) (121) (154 . 121)) nil nil)
  (setq struct (org-list-insert-item pos struct prevs checkp desc))
(let* ((struct ...) (prevs ...) (desc ...) (checkp ...)) (setq struct (org-list-insert-item pos struct prevs checkp desc)) (org-list- write-struct struct (org-list-parents-alist struct)) (when checkp (org- update-checkbox-count-maybe)) (looking-at org-list-full-item-re) (goto- char (match-end 0)) t) (if (save-excursion (goto-char itemp) (org-at-item-timer-p)) (progn (org-timer-item) t) (goto-char itemp) (let* (... ... ... ...) (setq struct ...) (org-list-write-struct struct ...) (when checkp ...) (looking-at org-list-full-item-re) (goto-char ...) t)) (if (or (not itemp) (save-excursion ... ...)) nil (if (save- excursion ... ...) (progn ... t) (goto-char itemp) (let* ... ... ... ... ... ... t))) (unless (or (not itemp) (save-excursion ... ...)) (if (save- excursion ... ...) (progn ... t) (goto-char itemp) (let* ... ... ... ... ... ... t))) (let ((itemp ...) (pos ...)) (unless (or ... ...) (if ... ... ... ...)))
  (not (org-insert-item))
  (or force-heading (not (org-insert-item)))
(if (or force-heading (not ...)) (progn (let* ... ... ... ... ... ... ... ... ...))) (when (or force-heading (not ...)) (let* (... ... ... ... ... ... pos hide-previous previous-pos) (cond ... ... ...) (insert head) (just- one-space) (setq pos ...) (end-of-line 1) (unless ... ... ...) (when ... ...) (run-hooks ...))) (if (or (= ... 0) (and ... ...)) (progn (insert "\n* ") (run- hooks ...)) (when (or force-heading ...) (let* ... ... ... ... ... ... ... ... ...)))
(cond ((run-hook-with-args-until-success ...)) ((org-at-table-p) (call-interactively ...)) (t (call-interactively ...)))
  call-interactively(org-meta-return nil

On Jan 23, 2011, at 10:59 PM, Nicolas Goaziou wrote:


I would like to announce, and submit to discussion, some list code
upgrades. So, let me introduce the changes done in development branch:

* Major changes

 1) It is possible (again) to have indentation of text determine the
    current level of the list. But this time, the 3 main exporters
    handle it. In other words, you can have:

    - a list
      - a sub-list
      Some text belonging to main list.
      - and even another sub-list

    This is on by default (with org-list-ending-method set to 'both).

 2) There is now support for finite alphabetical lists, thanks to
    Nathaniel Naff. This is off by default and activated by the
    variable `org-alphabetical-lists'.

    This also recognizes counters like address@hidden in addition to normal
    counters (i.e. address@hidden). For now, counters only affect matching
    bullets, so address@hidden have no effect on a numbered list. Though, they
    will during export, where address@hidden is the same as address@hidden

    In original patch, bullet type was passed to HTML and DocBook
    exporters. I removed that part of the code for various reasons:

    - It wasn't consistent across every exporter ;
    - While it sounds nice in HTML and, maybe, DocBook, it is,
      usually, a bad idea to enforce bullet types in LaTeX ;
    - It should be the job of style files ;
    - Org should otherwise provide, at least, roman numbering, in
      order to give a real choice to the user, as alphabetical and
      numbered ordered lists are somewhat limited with regards to
      what exporters standardly offer.

    Thus, setting a list to alphabetical bullets will not ensure
    export will have them too. To sum it up, alphabetical lists are
    some cosmetics applied to lists in an Org buffer only. Here

    a. Some list with an alphabetical bullet
       W. address@hidden Upper case letters are also allowed.

 3) As announced before, lists can now contain drawers, inline tasks,
    and blocks, themselves containing lists. Two variables (one for
    the Org buffer, and one for exporters) are controlling this:
    `org-list-forbidden-blocks' (by default no list can live in
    example, verse, and src blocks), and `org-list-export-context'
    (lists in valid blocks and in inline tasks will be exported by

    + an example of a list
      1. with another list
      2. in a block
    + and now another item

    As a special case, inline tasks, though starting at column 0, are
    always considered part of the first item above in the list.
    Consider the following example, with (require 'org-inlinetask),
    and try moving first sub-item, or exporting:

    - A list with
      + A sub-list
*************** TODO Stuff waiting
               1. First good reason to delay the task
               2. Second good reason to delay it
*************** END
      + Another sub-item

 4) Improve `newline-and-indent' (C-j): used in an item, it will keep
    text from moving at column 0. This allows to split text and make
    paragraphs while not breaking list. For example, type C-j twice
    at ¦, then M-q:

    + I have this quite long item. Now I'd like to start a new
      paragraph there. ¦This should be the beginning of the new

 5) Improve `org-toggle-item' (C-c -): used on a region, it will
    change the region into *one* item. With a prefix argument, it
    will fallback to previous behavior and make every line in region
    an item. It permits to easily add paragraphs inside a close list.
    For example, if you mark the paragraph below, and use C-c -, it
    will be added to the list above it:

    1. A list strolling around

    A paragraph that should be included in the list. Just select it
    and use C-c -.

* Bug fixes

 There are also some bug fixes. To name the visible ones:

 - Fix for checkboxes and cookies handling.

 - Export correctly sub-lists counters in LaTeX.

 - List are sturdier with regards to Babel printing output inside

 - Fix list to subtree transformation (with C-c C-*), as much as
   possible. Indeed, there is no equivalency between these
   constructs, mainly due to major change #1.

* What now?

 While Bernt Hansen helped me a lot already, some more testing would
 be appreciated. The repository is at:

         git://github.com/ngz/org-mode-lists.git new-struct

 It supersedes "recursive-lists" branch, submitted to the ML a few
 weeks ago.

 I'm open to ideas, suggestions, and criticism.



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- Carsten

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