* todos.el: Improve commentary.

[bpt/emacs.git] / lisp / calendar / ChangeLog

2013-06-08  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Improve commentary.
        (todos-item-end): Revert last change, since bug#14565 is now fixed.

2013-06-07  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Reorganize file structure again, to pacify byte-compiler.
        (todos-item-end): Use if-else instead of when-sexp to avoid
        explicit nil argument of backward-char (bug#14565).

2013-06-06  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Fix more byte-compiler warnings.
        (todos-jump-to-category): Let-bind variable that was mistakenly free.
        (todos-toggle-item-highlighting, todos-convert-legacy-files):
        Use eval-when-compile.

2013-06-05  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Fix byte-compiler warnings.
        (todos-merge-category): Relocate let-bound variable.
        (todos-toggle-item-highlighting): Restrict to todos-mode,
        todos-archive-mode and todos-filtered-items-mode.
        (todos-toggle-item-header, todos-diary-goto-entry)
        (todos-insert-sort-button): Let-bind variables that were
        mistakenly free.
        (todos-convert-legacy-files): Just require todo-mode instead of
        conditionalizing it.
        (todos-modes-set-2): Check whether hl-line-range-function is void.

2013-06-05  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Further code cleanup.  Improve commentary.  Remove
        autoload cookies.  Handle todo items in Fancy Diary display.
        (todos-done-separator): Reinstate length one less than
        window-width until bug#2749 is fixed.
        (todos-diary-goto-entry): New function, extracted from adapted
        definition of diary-goto-entry, which is removed to be added to
        diary-lib.el.
        (todos-powerset): Rename from todos-powerset-iterative and remove
        defalias by this name.  Add doc string and comments.
        (todos-modes-set-1, todos-modes-set-2, todos-modes-set-3)
        (todos-mode-external-set): Add doc string.

2013-06-04  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-add-item-if-new-category): Change default value.
        (todos-show, todos-jump-to-category, todos-add-file)
        (todos-add-category): Update doc string to reflect new default
        prompt for item insertion.
        (todos-add-file): Add omitted argument to called-interactively-p.
        (todos-show): Improve handling of adding first category.

2013-06-04  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Allow prompting for first item on adding a new
        category.  Fix handling of default todo file on adding first file.
        (todos-add-item-if-new-category): New defcustom.
        (todos-show, todos-jump-to-category, todos-add-category): Use it.
        (todos-short-file-name): Return nil if file name is not a string.
        (todos-add-file): Recalculate todos-files after adding a file.
        (todos-show): If first file was just added, make it the default.

2013-06-04  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-read-category, todos-merge-category):
        Fix argument value to accord with documented change from 2013-05-14.

2013-06-03  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: More code cleanup.  Update file copyright and author
        lines, add commentary.  Reformat so most lines do not exceed 80
        columns.  Fix doc strings problems found by checkdoc.
        (todos-edit-file): Delete unused argument.
        (todos-delete-item): Delete superfluous concat.
        (todos-next-button, todos-previous-button): Delete optional
        arguments, adjusting interactive spec accordingly, and add them as
        non-nil arguments to the invocations of forward-button and
        backward-button.

2013-06-03  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-y-with-space): New defcustom.
        (todos-y-or-n-p): New function.
        (todos-delete-category, todos-move-category, todos-delete-item)
        (todos-done-item-add-edit-or-delete-comment, todos-item-undone)
        (todos-find-archive, todos-archive-done-item, todos-search)
        (todos-read-category): Use it instead of y-or-n-p.

2013-06-02  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-show-categories-table): Correct doc string.
        (todos-sort-categories-alphabetically-or-numerically): Rename from
        todos-sort-categories-alphabetically-or-by-priority and adjust uses.
        (todos-set-category-number): Rename from
        todos-set-category-priority and adjust uses.
        (todos-raise-category): Rename from todos-raise-category-priority
        and adjust uses.
        (todos-lower-category): Rename from todos-lower-category-priority
        and adjust uses.

2013-06-01  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Some custom cleanup.
        (todos-edit): Rename from todos-item-insertion and adjust doc string.
        (todos-display): Rename from todos-mode-display.
        (todos-item-mark, todos-undo-item-omit-comment): Change :group to
        todos-edit.
        (todos-indent-to-here): Change :group to todos-display.
        (todos, todos-edit, todos-categories, todos-filtered)
        (todos-display, todos-faces): Change :version to "24.4".

2013-06-01  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-filtered-items-mode-map): Fix omission in
        previous change.
        (todos-mode): Comment out invocation of easy-menu-add, since menu
        definition was commented out in last change.

2013-05-31  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Move auto-mode-alist entries above provide sexp.
        Update adapted diary-goto-entry, so it also works with todo items
        when the buffer in which the included todo file is processed for
        the Fancy Diary is not killed.
        (todos-insert-item-from-calendar): Move to item editing commands
        section of file.  Add doc string, use todos-basic-insert-item and
        remove mistaken invocation of todos-show.

2013-05-31  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-edit-quit): After editing an item, make sure to
        return to its category.

2013-05-31  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Clean up code.  Uncapitalize file name in first line.
        Require cl-lib instead of cl.  Add section title separators.
        Reindent some code and comments.  Comment out Todos mode menu
        definition.
        (todos-basic-insert-item): Rename from todos-insert-item-1 and
        adjust uses.
        (todos-basic-edit-item-header): Rename from
        todos-edit-item-header-1 and adjust uses.
        (todos-display-categories): Rename from todos-display-categories-1
        and adjust uses.
        (todos-show, todos-basic-insert-item)
        (todos-basic-edit-item-header, todos-set-item-priority)
        (todos-item-undone, todos-convert-legacy-files)
        (todos-check-format, todos-filter-items-1):
        Use user-error instead of error.
        (todos-add-file, todos-basic-insert-item, todos-mark)
        (todos-button, todos-sorted-column, todos-archived-only)
        (todos-search, todos-category-string)
        (todos-top-priorities-overrides)
        (todos-insertion-commands-args-genlist, todos-filter-items)
        (todos-filter-items-1, todos-filtered-items-mode-map):
        Correct or improve document string.
        (todos-edit-file)
        (todos-sort-categories-alphabetically-or-by-priority)
        (todos-sort-categories-by-todo, todos-sort-categories-by-diary)
        (todos-sort-categories-by-done)
        (todos-sort-categories-by-archived, todos-next-button)
        (todos-previous-button, todos-gen-arglists)
        (todos-define-insertion-command)
        (todos-insertion-commands-arg-key-list)
        (todos-insertion-key-bindings, todos-update-categories-display):
        Add document string.
        (todos-powerset-recursive): Rename from powerset-recursive and
        reformulate slightly.
        (todos-powerset-iterative): Rename from powerset-bitwise and
        reformulate.
        (todos-insertion-commands-args): Use cl-remove-duplicates instead
        of remove-duplicates.
        (todos-define-insertion-command): Improve doc string of generated defun.
        (todos-adjusted-category-label-length)
        (todos-insert-category-line, todos-update-categories-display):
        Call cl-oddp instead of inlining its definition.
        (todos-key-bindings): Remove, replacing by the following.
        (todos-key-bindings-t, todos-key-bindings-t+a+f)
        (todos-key-bindings-t+a, todos-key-bindings-t+f): New variables.
        (todos-mode-map): Use new key-binding variables.
        (todos-archive-mode-map, todos-filtered-items-mode-map): Use new
        key-binding variables.  Don't suppress digit keys.
        (todos-categories-mode-map): Don't suppress digit keys.
        (todos-modes-set-1, todos-modes-set-2, todos-modes-set-3)
        (todos-mode, todos-archive-mode, todos-mode-external-set):
        Use setq-local instead of make-local-variable.

2013-05-24  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Reorganize file structure.

2013-05-22  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-edit-quit): Don't allow dateless item.

2013-05-21  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-key-bindings, todos-archive-mode-map)
        (todos-filtered-items-mode-map): Update bindings.
        (todos-find-archive): Rename from todos-show-archive and adjust uses.
        (todos-find-filtered-items-file): New command.

2013-05-21  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Use visual-line-mode instead of custom code.
        (todos-line-wrapping-function, todos-wrap-and-indent): Remove.
        (todos-wrap-lines, todos-indent-to-here): Update doc string.
        (todos-modes-set-1): Use visual-line-mode.

2013-05-21  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-read-file-name): Fix previous change to ensure
        it works when invoked outside of a Todos file.

2013-05-20  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Fixes concerning filtered items.
        (todos-mode-line-control): Make doc string more precise.
        (todos-read-file-name): Default to current file when user hits RET
        without choosing a file, to avoid creating file with empty base name.
        (todos-filter-items): Rename buffer of filtered items files.
        (todos-find-item): Save match data to avoid arg out of range error.
        (todos-print-buffer): Fix header of filtered items buffer output.

2013-05-17  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-done-separator): Use window-width for length, in
        anticipation of bug#2749 being fixed.

2013-05-17  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-category-completions): Restore point after
        ensuring category is properly displayed.

2013-05-16  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-filtered-items-mode-map): Update some bindings.
        (todos-show): Make it work the same in todos-archive-mode and
        todos-filtered-items-mode as in todos-mode.
        (todos-quit): When called in todos-archive-mode, switch to
        corresponding category in todo file.  When called in todos-mode,
        avoid going right back to archive.

2013-05-16  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Improve toggling of item numbering and headers.
        (todos-prefix-overlays): Don't reset item numbering for
        done items unless in todos-mode.
        (todos-archive-mode-map): Add bindings for todos-toggle-item-header.
        (todos-toggle-prefix-numbers): Reimplement without using
        todos-reset-prefix and make it work in Todos Archive mode and
        Todos Filtered Items mode.
        (todos-toggle-item-header): Make it work in Todos Archive mode and
        Todos Filtered Items mode.

2013-05-15  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Use tab instead of spaces to indent.
        (todos-indent-to-here): Change default value.
        (todos-modes-set-1): Make tab-width a local variable and set it to
        todos-indent-to-here.
        (todos-insert-item-1, todos-edit-item): Use tab not spaces to indent.
        (todos-edit-quit): Use tab not spaces to indent and fix omission of item.

2013-05-15  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-jump-to-category): Fix wrong variable left over
        from previous change.

2013-05-14  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Improve handling of jumping to a category, in
        particular that of an archive.
        (todos-category-completions): Add optional parameter to restrict
        completions of archive categories to current archive.  Exclude
        archive from completion files.
        (todos-read-category): When called from an archive, restrict
        category completions to the archive.  Fix mistaken use of all
        completion files instead of just those in which the chosen
        category occurs.
        (todos-archive-mode-map): Add new key binding.
        (todos-jump-to-category): Rename second optional parameter and
        extend its use to restricting category completions to the current
        archive.
        (todos-jump-to-archive-category): New command.

2013-05-13  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-modes-set-2): Restore point after finding start
        and end of hl-line-range-function.

2013-05-13  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Fixes for item marking and marked items.
        (todos-toggle-mark-item): Make no-op if point is not on an item.
        Toggle mark even if point is not at start of item.
        (todos-item-done): Signal an error if a done item is marked.
        Process marked todo items even if point is in done items section.

2013-05-11  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-item-undone): Remove item highlighting when user
        quits before deciding whether to omit comment.  Fix misplaced
        closing paren.  Change two uses of `if' to `when'.

2013-05-10  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Rename numerous commands and defcustoms and adjust all
        uses, change numerous key bindings, make some basic commands
        noninteractive and use them to define the commands, unify
        archiving commands.
        (todos-directory): Rename from todos-files-directory.
        (todos-print-buffer-function): Rename from todos-print-function.
        (todos-number-prefix): Rename from todos-number-priorities.
        (todos-top-priorities-overrides): Rename from todos-priorities-rules.
        (todos-top-priorities): Rename from todos-show-priorities.
        (todos-insertion-command-name, todos-insertion-key-bindings):
        Use "todos-insert-item-".
        (todos-key-bindings, todos-archive-mode-map)
        (todos-categories-mode-map, todos-filtered-items-mode-map):
        Adjust to renamed commands, make bindings more systematic,
        reorder entries.
        (todos-show-categories-table): Rename from todos-display-categories.
        (todos-sort-categories-alphabetically-or-by-priority): Rename from
        todos-display-categories-alphabetically-or-by-priority.
        (todos-sort-categories-by-todo): Rename from
        todos-display-categories-sorted-by-todo.
        (todos-sort-categories-by-diary): Rename from
        todos-display-categories-sorted-by-diary.
        (todos-sort-categories-by-done): Rename from
        todos-display-categories-sorted-by-done.
        (todos-sort-categories-by-archived): Rename from
        todos-display-categories-sorted-by-archived.
        (todos-print-buffer): Rename function from todos-print.
        (todos-print-buffer-to-file): Rename from todos-print-to-file.
        (todos-go-to-source-item): Rename from todos-jump-to-item.
        (todos-forward-item, todos-backward-item): Remove interactive form
        and move most of doc string and prefix argument error checking to...
        (todos-next-item, todos-previous-item): ...these new commands,
        which use the preceding functions.
        (todos-next-button): Rename from todos-forward-button.
        (todos-previous-button): Rename from todos-backward-button.
        (todos-toggle-prefix-numbers): Rename from
        todos-hide-show-item-numbering.
        (todos-toggle-view-done-items): Rename from todos-hide-show-done-items.
        (todos-toggle-view-done-only): Rename from todos-show-done-only.
        (todos-toggle-item-highlighting): Rename from todos-highlight-item.
        (todos-toggle-item-header): Rename from todos-hide-show-date-time.
        (todos-toggle-mark-item): Rename from todos-mark-unmark-item.
        (todos-filter-top-priorities): Rename from todos-top-priorities.
        (todos-filter-top-priorities-multifile): Rename from
        todos-top-priorities-multifile.
        (todos-filter-diary-items): Rename from todos-diary-items.
        (todos-filter-diary-items-multifile): Rename from
        todos-diary-items-multifile.
        (todos-filter-regexp-items): Rename from todos-regexp-items.
        (todos-filter-regexp-items-multifile): Rename from
        todos-regexp-items-multifile.
        (todos-insert-item-1): Remove interactive form, since
        todos-insert-item is generated like other item insertion commands.
        (todos-edit-file): Rename from todos-edit-multiline.
        (todos-item-undone): Rename from todos-item-undo.
        (todos-archive-done-item): Add raw prefix spec to interactive form
        and use it to test for archiving all done items in category;
        reorder tests in function body accordingly.
        (todos-archive-category-done-items): Remove.

2013-04-27  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-edit-multiline-item): Make a no-op when point is
        not on an item.

2013-04-24  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el (todos-check-format): Add check of well-formedness of
        categories sexp.  If it is well-formed but differs from
        todos-categories, do not signal an error but display a message.

2013-04-21  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Fixes and improvements related to item relocation.
        (todos-category-completions): On ensuring proper category display,
        if done items in category are visible, keep them visible.
        (todos-set-item-priority): Keep top of category in view while
        setting priority.
        (todos-move-item): Restore prevention of moving within the same
        category.  Move done items to top, not end, of done items section.
        When user quits before setting priority, make sure to return to
        starting file.
        (todos-item-undo): Partly reimplement along lines of
        todos-move-item, adding highlighting of single item as undo
        target, setting priority of multiple undone items, improving
        handling of quitting before setting priority.
        (todos-unarchive-items): Restore items to top, not end, of
        category's done section.

2013-04-19  Stephen Berman  <stephen.berman@gmx.net>

        * todos.el: Extend and improve item filtering and handling of
        saved files of filtered items.
        (todos-show-first): Add choices for diary and regexp items.
        (todos-absolute-file-name): Handle file names for diary and regexp
        items.
        (todos-filter-items): New function abstracted from item filtering
        commands, with handling of saved files of diary and regexp items.
        (todos-filter-items-1): Rename from todos-filter-items.
        (todos-filtered-buffer-name): Remove, since functionality is now
        incorporated into new function todos-filter-items.
        (todos-filtered-items-buffer, todos-top-priorities-buffer)
        (todos-diary-items-buffer, todos-regexp-items-buffer):
        Make defconsts instead of defcustoms.
        (todos-find-item): Restrict calculation and comparison of
        priorities to top priority items, in order to handle diary and
        regexp items.
        (todos-check-filtered-items-file): Rename from
        todos-check-top-priorities and adjust message and callers.
        (todos-filter-items-filename): Rename from
        todos-top-priorities-filename, adjusting caller and extending to
        files of filtered diary and regexp items.
        (todos-save-filtered-items-buffer): Rename from
        todos-save-top-priorities-buffer and adjust caller and uses.  Use
        write-file instead of write-region and use existing file name if
        previously saved.
        (todos-show): Handle initially displaying saved file of filtered
        diary or regexp items.
        (todos-top-priorities, todos-top-priorities-multifile)
        (todos-diary-items, todos-diary-items-multifile)
        (todos-regexp-items, todos-regexp-items-multifile): Use new
        function todos-filter-items.
        (auto-mode-alist): Extend regexp for files assigned to
        todos-filtered-items-mode to handle saved diary and regexp items.

2013-03-17  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-insert-item): Fix mistake in logic of
        here insertion from last change, and ensure category is set when
        command is called from outside Todos buffer.

2013-03-15  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Item unarchiving fixes and improvements.
        (todos-archive-mode-map): Add bindings for item and category
        marking/unmarking; make todos-display-categories binding same as
        in Todos mode; remove todos-unarchive-category binding.
        (todos-unarchive-category): Remove.
        (todos-unarchive-items): Fix handling of marked items.  Remove
        code for unarchiving whole category, since that is covered by
        unarchiving marked items.  Handle unarchiving items to a category
        that had been deleted from the todo file by re-adding the
        category.  Use todos-category-select to display restored items,
        not todos-show.  Remove obsolete or superfluous code.

2013-03-15  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-reset-prefix): Don't remove overlays,
        since it's superfluous and also wrongly removes items marks.
        (todos-category-completions): Select current category on visiting
        file, to ensure category is properly displayed if user switches to
        file via a non-Todos command.
        (todos-mark-category): Make implementation cleaner.
        (todos-unmark-category): Improve implementation.  Get overlay
        property only when there is an overlay.

2013-03-14  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-insert-item): Fix last change to make
        sure calling insertion "here" from outside goal todo items section
        gives new item top priority.  With priority insertion, if user
        cancels before setting priority, restore display.
        (todos-find-item): Restore narrowing after searching.
        (todos-item-done): Allow adding (same) comment to marked items.
        Don't add empty comment to done item.

2013-03-13  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-quit): If quitting
        todos-filtered-items-mode makes todos-mode current, don't call
        todos-show, which (here wrongly) prompts for a new Todos file.
        (todos-delete-category): Fix incorrect quotation mark.
        (todos-set-item-priority): Make prefix argument a no-op with
        commands for raising or lowering item priority.  Move mistakenly
        placed right paren to end of defun, where it belongs.

2013-02-25  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-key-bindings): Add binding for `todos-show'.
        (todos-show): Prompt for which todo file to visit when invoked
        from Todos mode.

2013-02-19  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Item insertion and done/undo fixes.
        (todos-insert-item): Maybe set the insertion file to
        todos-global-current-todos-file.  When inserting into a file that
        was not being visited on invoking this command, ensure chosen
        category is properly selected.  Make item inserted "here" the
        first todo item if the command was invoked with point in done
        items section or outside of the current category.
        (todos-item-done): When done items are shown, put cursor on first
        just done item.
        (todos-item-undo): Put cursor on undone item.

2013-02-16  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Improve handling of overlays.
        (todos-get-overlay): New function.
        (todos-prefix-overlay): Remove, since subsumed by
        todos-get-overlay, and replace by the latter in callers.
        (todos-reset-prefix): Apply only to buffer visiting Todos files.
        Simplify implementation and use `todos' overlay property.
        (todos-reset-done-separator): Use todos-get-overlay and `todos'
        overlay property.  Fix logic.
        (todos-category-select): Use todos-get-overlay and `todos' overlay
        property.
        (todos-remove-item): Use todos-get-overlay.  Correct obsolete code.
        (todos-prefix-overlays): Use todos-top-priority face also for
        non-numerical prefix of top priority items.  Add `todos' overlay
        property.
        (todos-hide-show-date-time): Simplify, using todos-get-overlay and
        `todos' overlay property.

2013-02-14  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-edit-multiline, todos-edit-quit):
        Revert buffer renaming.

2013-02-11  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-edit-quit): On quitting file editing,
        rename buffer back to current Todos file.  After selecting
        category, put point at top instead of recentering.

2013-02-08  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-edit-multiline-item): Revert to using
        indirect buffer, which makes it easier to return to Todos mode.
        (todos-edit-quit): Don't delete and reinsert items that don't need
        indenting.  Revert to just killing buffer on quitting single item
        editing.  On quitting file editing, select nearest category.

2013-02-07  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Bug fixes and improvements to item editing
        and insertion.
        (todos-check-format): Compare current value of todos-categories
        with actual categories sexp.
        (todos-repair-categories-sexp): Add warning to doc string about
        category order getting restored to list element order.
        (todos-mode-external-set): When todos-categories is nil, as in
        Todos Edit mode, set it by reading actual categories sexp.
        (todos-edit-mode): Make buffer writeable.
        (todos-done-item-section-p): New function.
        (todos-insert-item): Use it as part of preventing insertion here
        in done items section.  Move check for display of done items only
        to just before setting new item's priority, and if cancelled after
        toggling to todo items, restore display of done items.
        (todos-edit-multiline-item): Don't base on todos-edit-multiline
        but just narrow and change mode.
        (todos-edit-multiline): Don't make indirect buffer but just widen
        and change mode; also remove overlays.
        (todos-edit-quit): Restore Todos mode and category display; when
        quitting multiline item editing, ensure items above edited item
        are visible in window if possible.
        (todos-done-item-add-edit-or-delete-comment): If user moved point
        during editing, make sure it moves back to edited item before
        returning.

2013-02-05  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-reset-done-separator-string):
        Complete the implementation.
        (todos-hide-show-done-items): If start of done items sections is
        below the bottom of the window, make it visible.
        (todos-insert-item): Allow inserting item here to work outside of
        the current category, but then at top of category.  After checking
        whether only done items are shown, restore point to ensure
        inserting item here works correctly.
        (todos-set-item-priority): Delete leftover right paren at end.

2013-02-04  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Bug fixes involving or displaying done items.
        (todos-done-separator): Make length of long separator one less
        than window-width, in order to avoid following empty line.
        (todos-forward-item, todos-backward-item): Make empty line below
        last todo item accessible only by invoking without a numerical
        prefix argument and make the latter invocations move only to items.
        (todos-insert-item): Set todos-current-todos-file after selecting
        buffer, in order not to set global value.  If only done items are
        shown when this command is invoked, toggle to show todo items to
        avoid insertion into done items section.  When done items are
        shown, protect from cancelling before setting item priority: this
        also needs recentering to display all items.
        (todos-set-item-priority): Only call on (not done) todo items.
        Check that done items are visible not because file is widened.
        Use only `any' argument of called-interactively-p.  Make sure that
        giving an undone item lowest priority restores it to the todo
        section.
        (todos-item-done): If done items are visible on invoking this
        command, keep them visible afterwards.  Stop looking for marked
        items on reaching the empty line below the last todo item.

2013-02-02  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Several small fixes and improvements.
        (todos-done-separator-string): Change default value.
        (todos-update-categories-sexp): Remove unnecessary and misquided
        setq of todos-default-todos-file.  Use delete-region instead of
        kill-region to avoid polluting kill-ring.
        (todos-unload-hook): Remove (was not used).
        (todos-edit-multiline): Don't generate new edit buffer name on
        each invocation---that can cause confusion due to indirect buffer.
        (todos-edit-quit): Ensure lines in edit buffer that follow hard
        newlines are indented in the file to conform to diary format.
        (todos-set-item-priority): If done items in category are visible,
        keep them visible.

2013-01-30  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Fix done separator overlay bug.  Remove most
        FIXME comments.
        (todos-reset-and-enable-done-separator): Remove commented out
        workaround for done separator overlay bug; fix doc string.
        (todos-reset-done-separator): Delete old overlay after adding new
        overlay to fix done separator overlay bug; improve implementation.
        (todos-prefix-overlays): Improve first line of doc string.

2013-01-29  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Improve item marking and handling of marked items.
        (todos-prefix): Add validator to ensure value differs from that of
        todos-item-mark.
        (todos-item-mark): New defcustom.
        (todos-prefix-overlay): New function.
        (todos-marked-item-p): Use it.  Adapt implementation to new
        handling of marked items.
        (todos-insert-with-overlays): When inserting pushes down a marked
        item, move its prefix overlay.
        (todos-prefix-overlays): Add overlay even when prefix is empty string,
        otherwise item marking fails.  Improve handling of marked items.
        (todos-mark-unmark-item): Adapt to new handling of marked items
        and simplify by removing marking of all items in category.
        (todos-mark-category): Adapt to new handling of marked items and
        don't use todos-mark-unmark-item.
        (todos-unmark-category): Adapt to new handling of marked items.
        (todos-delete-item): Remove obsolete handling of marked items and
        useless restoration of point.
        (todos-set-item-priority): Use new handling of marked items.
        (todos-move-item, todos-item-done, todos-item-undo)
        (todos-archive-done-item): Remove obsolete handling of marked items.

2013-01-25  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Improve definitions and use of some faces.
        (todos-top-priority): Use current definition of font-lock-constant-face.
        (todos-diary-expired): Make default value contrast more with
        default value of todos-date face.
        (todos-nondiary, todos-category-string): New faces.
        (todos-nondiary-face, todos-category-string-face): Corresponding
        new variables.
        (todos-done, todos-comment): Switch default values to go better
        with default value of todos-date face.
        (todos-done-sep): Change default value.
        (todos-category-string-matcher-1)
        (todos-category-string-matcher-2): Improve doc string.
        (todos-font-lock-keywords): Use todos-nondiary-face and
        todos-category-string-face.
        (todos-done-separator): Propertize string with todos-done-sep face.
        (todos-filtered-items-mode): Fix typo.

2013-01-23  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Improve handling of saved top priorities items.
        (todos-find-item): Find done items and items whose priority has
        changed or whose text was truncated or augmented; add doc string.
        (todos-check-top-priorities): Highlight each item that is not up
        to date.
        (todos-jump-to-item): Jump to items whose priority has changed or
        whose text was truncated or augmented.

2013-01-22  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Revise handling of initial display and extend
        to top priorities file.
        (todos-display-categories-first): Remove, replacing by this:
        (todos-show-first): New defcustom.
        (todos-first-visit): Remove, replacing by this:
        (todos-visited): New variable.
        (todos-absolute-file-name): Extend possible values of optional
        argument to take top priorities files into account.
        (todos-modes-set-3, todos-mode): Remove use of todos-first-visit.
        (todos-mode-external-set): Call find-file-noselect instead of
        find-buffer-visiting, since the latter may fail.
        (todos-show): Revise handling of initial display using
        todos-show-first and todos-visited and extend to top priorities
        file.
        (todos-quit): Adapt to new handling of initial display.

2013-01-14  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Implement saving top priority items buffers,
        improve implementation of item filtering commands and
        infrastucture, and fix two bugs.
        (todos-prefix-overlays): Use todos-top-priority face only in Todos
        mode.
        (todos-multiple-filter-files): Get file-truename of Todos file.
        (todos-filter-items): Pass a list of files from the caller instead
        of building it here, and move handling of cancelled file selection
        dialog to callers.  Correct omission of file-wide default number
        of top priorities.
        (todos-filtered-buffer-name): Treat file-list argument only as a list.
        (todos-find-item, todos-check-top-priorities)
        (todos-top-priorities-filename)
        (todos-save-top-priorities-buffer): New functions.
        (todos-save): Use todos-save-top-priorities-buffer.
        (todos-jump-to-item): Refactor and use todos-find-item.
        (todos-top-priorities): Simplify semantics of prefix argument.
        Check if top priorities file exists and if so, visit it, reporting
        whether it is up to date.  Add optional argument and use it to
        handle multiple files.
        (todos-diary-items, todos-regexp-items): Add optional argument and
        use it to handle multiple files.
        (todos-top-priorities-multifile, todos-diary-items-multifile)
        (todos-regexp-items-multifile): Refactor, using corresponding
        non-multifile command.
        (auto-mode-alist): Add pattern for top priorities files to visit
        these in Todos Filtered Items mode.

2013-01-08  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Fix tabular alignment in Todos Categories mode.
        (todos-adjusted-category-label-length): New function.
        (todos-padded-string): Use it.

2013-01-08  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-move-item): Allow moving done items to
        done section of another category.

2013-01-06  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Display numerical priority string of top
        priority items in category in a distinctive face.
        (todos-prefix-string): Make doc string more precise.
        (todos-top-priority): New defface.
        (todos-done, todos-done-sep): Use more compact face definition
        \(taken from font-lock.el).
        (todos-comment): Give a complete face definition, instead of
        inheriting from todos-done.
        (todos-font-lock-keywords): Use todos-comment-face for
        todos-comment-string-matcher.
        (todos-prefix-overlays): Use todos-top-priority as the face
        property of top priority items; don't condition reapplying item
        prefix overlay on whether the string changed, since that prevents
        updating display after changing number of top priorities.
        (todos-set-top-priorities): Call todos-prefix-overlays to update
        display.

2013-01-04  Stephen Berman  <Stephen.Berman@rub.de>

        * calendar/todos.el (todos-reset-global-current-todos-file)
        (todos-display-categories-1): Use absolute name of
        todos-default-todos-file.

2013-01-04  Stephen Berman  <Stephen.Berman@rub.de>

        * calendar/todos.el (todos-insert-item): Fix copy and paste error
        from previous change.

2013-01-03  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Implement extended category completions.
        (todos-default-todos-file): Change default value to correct custom
        type.
        (todos-category-completions-files): New defcustom.
        (todos-reevaluate-category-completions-files-defcustom)
        (todos-absolute-file-name, todos-category-completions): New defuns.
        (todos-reevaluate-filelist-defcustoms):
        Add todos-category-completions-files and
        todos-reevaluate-category-completions-files-defcustom.
        (todos-allcats-file, todos-all-categories-alist)
        (todos-jump-to-category-other-file, todos-jump-to-any-category)
        (todos-move-item-to-file): Remove (todos-all-categories-alist both
        as defvar and as defun).
        (todos-read-category): Rewrite using extended category completions
        and better handling of completion against existing or non-existing
        categories.
        (todos-validate-name): Correct doc string; use local instead of
        dynamic variables in function body.
        (todos-insert-category-line): Adjust use of todos-jump-to-category
        to new argument list.
        (todos-key-bindings, todos-menu): Delete entries for removed
        commands.
        (todos-show): Get absolute name of todos-default-todos-file;
        add `nowarn' argument to find-file-noselect; adjust use of
        todos-add-category to new argument list.
        (todos-jump-to-category): Rewrite using extended category
        completions; reverse argument list, adapting FILE argument to new
        completion mechanism; add autoload cookie; call todos-show if
        there are no Todos files.
        (todos-add-category): Rewrite using extended category completions;
        add FILE argument to accommodate new completion mechanism.
        (todos-merge-category): Adapt to extended category completions,
        adding prefix argument.
        (todos-insert-item): Adapt to extended category completions; use
        todos-read-category instead of todos-jump-to-category in prefix
        argument calls; call todos-show if there are no Todos files; if
        item is inserted at end of category, recenter to ensure the items
        above it are displayed in the window.
        (todos-move-item): Adapt to extended category completions, making
        argument prefix argument; allow moving within category (for the
        sake of code simplification); add `nowarn' argument to
        find-file-noselect.
        (todos-archive-done-item): Prevent error when attempting to
        archive not-done todo item; adjust use of todos-add-category to
        new argument list.

2012-12-15  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-archive-done-item): Fix archiving of
        all done items in a category and resulting display of todo file.

2012-12-14  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-priorities-rules): Fix customization
        type to prevent mismatch error.
        (todos-set-top-priorities): Fix rule construction; fix input check;
        improve prompt.

2012-12-14  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-insert-item): If user exits Calendar
        before choosing a date, cancel item insertion.
        (todos-set-date-from-calendar): If user exits Calendar before
        choosing a date, clean up properly.

2012-12-12  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Extend and improve handling of item editing,
        especially of date/time header.
        (todos-month-name-array, todos-month-abbrev-array): New defconsts.
        (todos-date-pattern): Use explicitly numbered groups.
        (todos-read-date): Optionally read and return just one of the date
        string components year, month or monthname, day.
        (todos-key-bindings): Add bindings for new item header editing
        commands.
        (todos-edit-item): Exclude date/time header from minibuffer by
        default; include it by passing a prefix argument.
        (todos-edit-item-header-1): New function containing the guts of
        the commands for editing item date/time headers.
        (todos-edit-item-header): Use it.  Condition editing of time
        string on value of `todos-always-add-time-string'.
        (todos-edit-item-date-from-calendar): Use todos-edit-item-header-1.
        (todos-edit-item-date-to-today): Rename from
        todos-edit-item-date-is-today and use todos-edit-item-header-1.
        (todos-edit-item-date): Remove.
        (todos-edit-item-date-day-name, todos-edit-item-date-year)
        (todos-edit-item-date-month, todos-edit-item-date-day): New commands.

2012-12-02  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-show): Fix a comment.
        (todos-add-category): Prompt for a new category if passed category
        is the empty string, not nil.

2012-11-26  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-make-categories-list)
        (todos-convert-legacy-files, todos-jump-to-item)
        (todos-move-category, todos-merge-category)
        (todos-archive-done-item, todos-unarchive-items): Include end of
        line in regex searches for beginning of category, in order not to
        get a category whose name contains the searched for category name.

2012-11-15  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-forward-category): Fix typo.

2012-10-30  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el (todos-define-insertion-command):
        Let generated insertion commands accept a prefix argument.

2012-10-08  Stephen Berman  <Stephen.Berman@rub.de>

        * calendar/todos.el (todos-move-item): If user quits before
        completing movement, restore display of initial category; if item
        is moved to end of target category, make sure the items above it
        are displayed in the window.

2012-10-08  Stephen Berman  <stephen.berman@gmx.net>

        * calendar/todos.el: Fixes to todos-move-item and some of its
        subroutines.
        (todos-move-item): When there are marked items, point need not be
        on an item; remove obsolete use of todos-add-category, since this
        is now already done in todos-read-category; fix typo.
        (todos-diary-item-p): Exclude empty lines.
        (todos-read-category): Restore point and narrowing after adding
        new category, to avoid moving to beginning of file when moving
        marked items to a new category.
        (todos-set-item-priority): Prompt for priority only when the
        category has at least one todo item; only use non-nil priority to
        calculate insertion location.
        (todos-read-category): Don't reset todos-categories when a new
        category is added due to todos-move-item or todos-jump-to-item.

2012-09-24  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-07-14 (revision 110020).
        * calendar/todos.el (todos-copy-item): New command.
        (todos-insertion-map): Add key binding for it.

2012-09-24  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-07-13 (revision 110019).
        * calendar/todos.el (todos-undo-item-omit-comment): New defcustom.
        (todos-item-undo): Use it.
        (todos-allcats-file, todos-all-categories-alist): New variables.
        (todos-all-categories-alist): New function.
        (todos-jump-to-any-category): New command.
        (todos-move-item): Remove mark overlays from buffer items were
        moved from; update todos-categories-with-marks,

2012-09-24  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-27 (revision 110018).
        * calendar/todos.el: Further code rearrangement; further new and
        revised comments.
        (todos-reevaluate-filelist-defcustoms): Rename from
        todos-reevaluate-defcustoms and adjust callers.
        (todos-date-pattern, todos-nondiary-start, todos-nondiary-end)
        (todos-date-string-start, todos-done-string-start)
        (todos-item-start): Change from defvar to defconst.
        (todos-set-top-priorities): Use read-number and simplify.
        (todos-insert-item): Check whether date-type argument is a string.
        (todos-set-date-from-calendar): Check whether
        todos-date-from-calendar is a string; simplify cond clause.
        (todos-archive-done-item, todos-unarchive-items):
        Use buffer-substring-no-properties.

2012-09-23  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-25 (revision 110017).
        * calendar/todos.el (todos-item-undo): Fix restoration on
        cancelling; use buffer-substring-no-properties; comment out code
        removing mark overlay; fix insertion of undone items; display any
        remaining done items.

2012-09-23  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-24 (revision 110016).
        * calendar/todos.el: Further significant code rearrangement;
        further comment revision.
        (todos-mode-display): New defgroup.
        (todos-prefix, todos-number-priorities)
        (todos-done-separator-string, todos-done-string)
        (todos-comment-string, todos-show-with-done)
        (todos-mode-line-function, todos-skip-archived-categories)
        (todos-highlight-item, todos-wrap-lines)
        (todos-line-wrapping-function): Use it.
        (todos-item-insertion): New defgroup.
        (todos-include-in-diary, todos-diary-nonmarking)
        (todos-nondiary-marker, todos-always-add-time-string)
        (todos-use-only-highlighted-region): Use it.
        (todos-forward-button, todos-backward-button): New commands.
        (todos-categories-mode-map): Use them, replacing forward-button
        and backward-button.
        (todos-merge-category): Fix and improve implementation; handle
        archived items.
        (todos-insert-item, todos-set-date-from-calendar): Handle setting
        date by calling todos-insert-item-from-calendar.
        (todos-delete-item): Fix overlay handling.
        (todos-move-item): Highlight item to be moved.
        (todos-item-undo): Handle marked items.
        (todos-insert-item-from-calendar): Rewrite using
        todos-date-from-calendar.

2012-09-23  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-21 (revision 110015).
        * calendar/todos.el: Further comment revision.
        (todos-sorted-column): Change default value, also taking tty into
        account.
        (todos-reset-done-separator): Fix faulty variable binding.
        (todos-reset-and-enable-done-separator): Save match data; comment
        out code that causes problems for Edebug.
        (todos-item-start): Handle empty line between todo and done items
        when done items are hidden.
        (todos-read-date): Use a leap year for `*' to allow
        calendar-last-day-of-month to return Feb. 29.
        (todos-archive-mode, todos-edit-mode, todos-categories-mode)
        (todos-filtered-items-mode): Delete faulty parentheses.
        (todos-quit): Save Todos and archive files unconditionally.
        (todos-forward-item): Accept only positive prefix argument.
        (todos-backward-item): Accept only positive prefix argument; don't
        move point to beginning of buffer if it is on the first item.
        (todos-hide-show-date-time): Remove obsolete interactive spec.
        (todos-move-category): Improve prompt string; ensure file moved to
        is different from file moved from.
        (todos-merge-categories): Remove.
        (todos-set-category-priority): New command.
        (todos-raise-category-priority, todos-lower-category-priority):
        Use it to define these commands.
        (todos-set-item-priority): Rewrite and generalize.
        (todos-raise-item-priority, todos-lower-item-priority): Use it to
        define these commands.

2012-09-23  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-15 (revision 110014).
        * calendar/todos.el (todos-reset-done-separator)
        (todos-reset-and-enable-done-separator): New functions.
        (todos-reset-done-separator-string): Rewrite using
        todos-reset-done-separator for string longer than 1 character.
        (todos-mode): Add todos-reset-and-enable-done-separator to
        window-configuration-change-hook, replacing previous anonymous
        function.
        (todos-unload-hook): And remove it.

2012-09-23  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-14 (revision 110013).
        * calendar/todos.el (todos-done-separator-string): New defcustom.
        (todos-done-separator): New variable replacing defcustom of the
        same name.
        (todos-reset-done-separator-string, todos-done-separator):
        New functions.
        (todos-mode): Make function added to
        window-configuration-change-hook do a better job of updating the
        done items separator string overlay.
        (todos-unload-hook): Remove it here.
        (todos-item-undo): Fix search for item's end.

2012-09-23  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-03 (revision 110012).
        * calendar/todos.el: Further comment revision.
        (todos-sorted-column): Change default value.
        (todos-item-start): Handle empty category (needed in
        todos-filter-items).
        (todos-read-date): Don't use calendar-read; make code cleaner.
        (todos-multiple-filter-files): Rename this variable from
        todos-multiple-files and adjust users.
        (todos-multiple-filter-files-widget): Rename from
        todos-multiple-files-widget and adjust users.
        (todos-multiple-filter-files): Rename this function from
        todos-multiple-files and adjust callers.
        (todos-filter-items): Remove unused code.
        (todos-insert-category-line): Add space so highlighting of last
        column is consistent with the others; adjust display of column
        highlighting.
        (todos-menu): Remove obsolete entry.
        (todos-categories-mode-map): Add new bindings.
        (todos-display-categories-alphabetically-or-by-priority): New command.
        (todos-display-categories-sorted-by-todo)
        (todos-display-categories-sorted-by-diary)
        (todos-display-categories-sorted-by-done)
        (todos-display-categories-sorted-by-archived): Restore and fix
        implementation.

2012-09-23  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-02 (revision 110011).
        * calendar/todos.el: Significant code rearrangement; further
        comment revision.
        (todos-filtered-items-buffer): Rename from todos-filter-buffer and
        adjust users.
        (todos-filtered-buffer-name): Rename from
        todos-special-buffer-name and adjust users.
        (todos-filtered-items-mode-map): Rename from
        todos-filter-items-mode-map and adjust users.
        (todos-mode-external-set): Use todos-categories instead of
        todos-set-categories (and add comment to check if this DTRT).
        (todos-filtered-items-mode): Rename from todos-filter-items-mode
        and adjust users.
        (todos-add-category): Don't call todos-validate-name, since
        todos-read-category does.
        (todos-edit-quit): Use todos-repair-categories-sexp.
        (todos-done-item-add-edit-or-delete-comment): Rename from
        todos-done-item-add-or-edit-comment and adjust users; add optional
        argument to prompt to delete comment.
        (todos-item-undo): Delete done item comment on undoing if user
        confirms.

2012-09-22  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-02 (revision 110010).
        * calendar/todos.el: Further code rearrangement and comment
        revision.
        (todos-item-start): Handle empty line between todo and done items
        when done items are displayed.
        (todos-key-bindings): Comment out bindings meant only for
        todos-archive-mode.
        (todos-archive-mode-map): Fix typo.
        (todos-archive-mode): Derive from special-mode instead of
        todos-mode to prevent its key bindings from being available here.
        (todos-archive-done-item): Remove obsolete code; fix item count
        updating.
        (todos-unarchive-items): Simplify; fix unarchiving of all items in
        category; fix item count updating; fix typo.

2012-09-22  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-06-01 (revision 110009).
        * calendar/todos.el: Further code rearrangement and comment
        revision.
        (todos-add-to-buffer-list, todos-update-buffer-list): New functions.
        (todos-file-buffers): New variable.
        (todos-reset-global-current-todos-file): Use it to simplify
        implementation of this function.
        (todos-filtered): New defgroup.
        (todos-filter-buffer, todos-top-priorities-buffer)
        (todos-diary-items-buffer, todos-regexp-items-buffer)
        (todos-priorities-rules, todos-show-priorities)
        (todos-filter-files, todos-filter-done-items): Use it.
        (todos-skip-archived-categories): Rename from
        todos-ignore-archived-categories and adjust users.
        (todos-display-as-todos-file): Rename from todos-after-find-file
        and adjust callers.
        (todos-reset-highlight-item, todos-mode-external-set)
        (todos-jump-to-category, todos-jump-to-item)
        (todos-raise-category-priority, todos-insert-item)
        (todos-move-item): Use find-file-visiting.
        (todos-make-categories-list): Use file-truename.
        (todos-display-categories-1): Adjust title text for archive files;
        use done label for item counts in archive files.
        (todos-modes-set-3): Add todos-display-as-todos-file to
        find-file-hook.
        (todos-mode): Add todos-add-to-buffer-list to find-file-hook and
        todos-update-buffer-list post-command-hook.
        (todos-unload-hook): And remove them.
        (todos-show): Only when interactively invoked from an archive,
        switch to corresponding Todos file.
        (todos-archive-done-item): Remove obsolete code; fix handling of
        marked items; fix search for existing category; check whether
        archive exists and write to file if not; improve display handling.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-29 (revision 110008).
        * calendar/todos.el: Further comment revision.
        (todos-item-end): Replace use of command todos-forward-item by
        regexp searches using internal variables.
        (todos-raise-category-priority): Improve and comment.
        (todos-insert-item): Fix insertion of empty time string.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-29 (revision 110007).
        * calendar/todos.el (todos-ignore-archived-categories):
        Revert last change; remove :initialize and :set functions; change
        use and change users accordingly.
        (todos-reset-categories, todos-categories-full)
        (todos-truncate-categories-list): Remove.
        (todos-set-categories, todos-update-categories-sexp):
        Use todos-categories instead of todos-categories-full; remove use
        of todos-ignore-archived-categories and
        todos-truncate-categories-list.
        (todos-check-format, todos-repair-categories-sexp):
        Use todos-categories instead of todos-categories-full.
        (todos-read-category): Improve last change.
        (todos-validate-name): Use completing-read.
        (todos-categories-category-number): Rename from
        todos-category-number and adjust users.
        (todos-update-categories-display, todos-mode-external-set)
        (todos-delete-category, todos-move-category, todos-merge-category)
        (todos-unarchive-items): Remove use of todos-categories-full and
        todos-ignore-archived-categories.
        (todos-modes-set-3, todos-add-category): Remove use of
        todos-categories-full.
        (todos-edit-mode): Fix typo.
        (todos-forward-category): Use todos-ignore-archived-categories.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-28 (revision 110006).
        * calendar/todos.el: Doubts about todos-ignore-archived-categories.
        (todos-ignore-archived-categories): Change default value.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-27 (revision 110005).
        * calendar/todos.el: Further comment revision.
        (todos-reset-global-current-todos-file):
        Try to make this not slow down kill-buffer.
        (todos-update-categories-sexp): Handle the case where there is no
        categories sexp yet, i.e. after inserting the first item in the
        file, so todos-display-categories works.
        (todos-read-file-name): Improve implementation.
        (todos-validate-name): Use variable todos-files.
        (todos-category-number): New variable.
        (todos-insert-category-line, todos-update-categories-display)
        (todos-raise-category-priority): Use it.
        (todos-add-file): Remove unused remnant code.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-25 (revision 110004).
        * calendar/todos.el: Further comment revision.
        (todos-set-item-top-priority): New command.
        (todos-reset-global-current-todos-file):
        Use todos-files-function instead of todos-files.
        (todos-read-category): Add optional argument to test whether
        caller adds new category; if so, don't prompt for new category and
        don't restore original todos-categories list.
        (todos-categories-mode-map): Update to renamed commands.
        (todos-filter-items-mode-map): Add binding for new command.
        (todos-mode): Fix typo.
        (todos-show): If called from archive file, show corresponding
        category in Todos file, if it exists.
        (todos-jump-to-category): Remove code to add new category, since
        todos-read-category can do that.
        (todos-add-file): Remove obsolete code; visit new file in selected
        window.
        (todos-add-category): Simplify.
        (todos-rename-category): Use force-mode-line-update instead of
        setting mode-line-buffer-identification.
        (todos-delete-category): Improve logic of prompts; use
        todos-categories-full and check todos-ignore-archived-categories.
        (todos-raise-category-priority, todos-lower-category-priority):
        Rename from todos-{raise,lower}-category and adjust callers.
        (todos-move-category, todos-merge-category):
        Set todos-categories-full; on setting todos-categories check
        todos-ignore-archived-categories.
        (todos-insert-item): Let-bind use-empty-active-region and use
        use-region-p instead of transient-mark-mode.
        (todos-raise-item-priority): Improve implementation.
        (todos-archive-done-item): Rename from
        todos-archive-done-item-or-items and adjust callers; confine to
        Todos mode.
        (todos-unarchive-items): On setting todos-categories check
        todos-ignore-archived-categories.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-23 (revision 110003).
        * calendar/todos.el (todos-key-bindings): Remove binding of
        deleted command.
        (todos-menu): Remove entry of deleted command.
        (todos-show-archive): Fix last change.
        (todos-done-item-add-or-edit-comment): Rename from
        todos-comment-done-item and adjust callers; prompt to edit an
        existing comment.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-22 (revision 110002).
        * calendar/todos.el (todos-set-show-current-file): Rename from
        todos-toggle-show-current-file and adjust callers.
        (todos-number-priorities): Rename from todos-number-prefix and
        adjust users.
        (todos-update-count): Rename from todos-set-count and adjust
        callers.
        (todos-hide-show-item-numbering): Rename from
        todos-toggle-item-numbering and adjust callers.
        (todos-hide-show-done-items): Rename from
        todos-toggle-view-done-items and adjust callers.
        (todos-show-done-only): Rename from todos-toggle-show-done-only.
        (todos-view-archived-items): Comment out.
        (todos-show-archive): Prompt to choose another archive file if
        current Todos file lacks an archive; prompt to visit archive
        anyway when current category has no archived items.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-21 (revision 110001).
        * calendar/todos.el: Further comment revision and code
        rearrangement.
        (todos-item-end): Revert last change.
        (todos-key-bindings, todos-menu, todos-archive-mode-map)
        (todos-filter-items-mode-map): Use renamed commands.
        (todos-hide-show-date-time): Rename from
        todos-toggle-display-date-time.
        (todos-mark-unmark-item): Rename from todos-toggle-mark-item and
        adjust caller.
        (todos-backward-item): Exempt special handling only from
        todos-regexp-items-buffer instead of todos-filter-items-mode.
        (todos-raise-item-priority): Don't allow item reprioritizing in
        Todos filter items mode except for top priority items.

2012-09-21  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-19 (revision 110000).
        * calendar/todos.el: Add and revise further doc strings and
        comments.
        (todos-filter-function, todos-custom-items)
        (todos-custom-items-multifile): Remove.
        (todos-filter-done-items): New defcustom.
        (todos-item-end, todos-backward-item): Handle todos-filter-items-mode.
        (todos-filter-items): Check return value of caller first; tag
        archived items for todos-jump-to-item; delete categories sexp
        before processing filter; check todos-filter-done-items for
        whether to leave done items; remove custom filter; fix regexp for
        file and category tags; don't invoke buffer fontification.
        (powerset-recursive): Fix typo.
        (todos-key-bindings): Remove unused bindings.
        (todos-top-priorities-multifile, todos-diary-items-multifile)
        (todos-regexp-items-multifile): Use variable todos-multiple-files.
        (todos-jump-to-item): Fix regexp; handle archive tags; take
        todos-filter-done-items into account.
        (todos-insert-item-from-calendar): Relocate to end of file
        together with key-binding as addition to calendar.el.

2012-09-20  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2012-05-17 (revision 109999).
        * calendar/todos.el: Add and revise further doc strings and
        comments; major code rearrangement.
        (todos-merged-files, todos-prompt-merged-files)
        (todos-print-priorities, todos-tmp-buffer-name)
        (todos-top-priorities-widgets, todos-update-merged-files)
        (todos-merged-top-priorities, todos-merged-diary-items)
        (todos-merged-regexp-items, todos-merged-custom-items)
        (todos-raw-mode, todos-change-default-file)
        (todos-toggle-diary-inclusion, todos-toggle-item-diary-nonmarking)
        (todos-toggle-diary-nonmarking, todos-validate-category-name):
        Remove.
        (todos-category-string-matcher): Comment out.
        (todos-categories): New defgroup.
        (todos-initial-file, todos-filter-buffer)
        (todos-top-priorities-buffer, todos-categories-category-label)
        (todos-diary-items-buffer, todos-regexp-items-buffer)
        (todos-custom-items-buffer, todos-filter-files)
        (todos-highlight-item, todos-todo-mode-date-time-regexp):
        New defcustoms.
        (todos-diary-expired): New face.
        (todos-print-buffer, todos-multiple-files)
        (todos-multiple-files-widget, todos-key-bindings): New variables.
        (todos-short-file-name, todos-reevaluate-default-file-defcustom)
        (todos-special-buffer-name)
        (todos-reevaluate-filter-files-defcustom)
        (todos-reset-highlight-item, todos-reevaluate-defcustoms)
        (todos-nondiary-marker-matcher, todos-diary-nonmarking-matcher)
        (todos-diary-expired-matcher, todos-category-string-matcher-1)
        (todos-category-string-matcher-2, todos-repair-categories-sexp)
        (todos-validate-name, todos-multiple-files)
        (todos-display-categories-1, todos-update-categories-display)
        (todos-modes-set-3, todos-mode-external-set): New functions.
        (todos-set-top-priorities-in-file)
        (todos-set-top-priorities-in-category)
        (todos-top-priorities-multifile, todos-diary-items-multifile)
        (todos-regexp-items-multifile, todos-custom-items-multifile)
        (todos-convert-legacy-files, todos-jump-to-item)
        (todos-edit-multiline-item, todos-edit-item-date-from-calendar)
        (todos-edit-item-diary-inclusion)
        (todos-edit-category-diary-inclusion)
        (todos-edit-item-diary-nonmarking)
        (todos-edit-category-diary-nonmarking): New commands.
        (todos, todos-faces): Update :version.
        (todos-done-separator, todos-completion-ignore-case):
        Change default value.
        (todos-done-separator): Change :set function.
        (todos-indent-to-here): Add :validate function to :type.
        (todos-prefix-string, todos-mark, todos-button)
        (todos-sorted-column, todos-archived-only, todos-search)
        (todos-done, todos-done-sep): Provide full face definitions
        instead of inheriting.
        (todos-edit-buffer, todos-categories-buffer): Change from
        defcustom to defvar.
        (todos-category-beg, todos-category-done): Change from defvar to
        defconst.
        (todos-files): Check if todos-files-directory exists.
        (todos-default-todos-file, todos-mode-line-control, todos-print):
        Use todos-short-file-name.
        (todos-font-lock-keywords): Use todos-nondiary-marker-matcher,
        todos-diary-nonmarking-matcher, todos-category-string-matcher-1,
        todos-category-string-matcher-2, todos-diary-expired-matcher.
        (todos-category-select): Use todos-done-string-start, and
        condition search on todos-show-with-done; don't make display
        overlay for done items separator string if there already is one;
        use todos-highlight-item, require hl-line and activate
        hl-line-mode here in order to avoid a hang if done in todos-mode
        or the mode hook.
        (todos-update-categories-sexp): Use todos-categories-full if set,
        otherwise todos-categories.
        (todos-make-categories-list): Don't test for archive file when
        processing a legacy todo-mode file.
        (todos-check-format): Add check for todos-categories sexp.
        (todos-diary-item-p): Use todos-nondiary-start instead of
        todos-date-pattern.
        (todos-marked-item-p): Rename from todos-item-marked-p.
        (todos-read-file-name): Don't accept empty name; validate.
        (todos-read-category): Validate new name before prompting whether
        to add new category; force quit if user answers no.
        (todos-filter-items): Improve implementation.
        (todos-set-top-priorities): Rewrite as a noninteractive function
        using minibuffer input instead of widgets.
        (todos-insert-sort-button): Call todos-display-sorted with
        argument nil to display categories in numerical order, instead of
        calling todos-display-categories.
        (powerset-recursive): Borrow and slightly reformulate the (GDFL'd)
        Common Lisp powerset function at
        http://rosettacode.org/wiki/Power_set#Common_Lisp.
        (powerset-bitwise): Implement in Emacs Lisp the (GDFL'd) C
        powerset function at http://rosettacode.org/wiki/Power_set#C.
        (todos-powerset): Defalias to powerset-bitwise.
        (todos-mode-map): Generate from todos-key-bindings instead of
        listing each key definition.
        (todos-categories-mode-map): Add two bindings.
        (todos-filter-items-mode-map): Add some bindings, remove others.
        (todos-mode): Derive from special-mode; use todos-modes-set-3; add
        function setting todos-done-separator to
        window-configuration-change-hook.
        (todos-unload-hook): Remove function setting todos-done-separator
        from window-configuration-change-hook.
        (todos-archive-mode): Derive from todos-mode; use todos-modes-set-3.
        (todos-edit-mode): Derive from text-mode; use todos-mode-external-set.
        (todos-categories-mode): Derive from special-mode; use
        todos-mode-external-set.
        (todos-filter-items-mode): Derive from special-mode.
        (todos-quit): Save archive file if it hasn't yet been saved.
        (todos-display-categories): Delegate all functionality to
        todos-display-categories-1 and todos-update-categories-display.
        (todos-toggle-view-done-items): Improve implementation.
        (todos-highlight-item): Require hl-line.
        (todos-toggle-display-date-time): Remove argument and make it
        apply only to whole file.
        (todos-top-priorities, todos-diary-items, todos-regexp-items)
        (todos-custom-items): Use todos-special-buffer-name.
        (todos-add-file): Use todos-short-file-name and
        todos-reevaluate-defcustoms; remove validation, since it's now
        done in todos-read-file-name.
        (todos-add-category): Also update todos-categories-full if non-nil.
        (todos-delete-category): Delete file after confirmation if only
        category is deleted.
        (todos-move-category): Use todos-short-file-name and
        todos-reevaluate-defcustoms.
        (todos-insert-item): Fix getting date from the calendar and
        insertion of time string.
        (todos-set-date-from-calendar): Enter calendar buffer, suppressing
        display of diary entries.
        (todos-edit-multiline): Add optional argument to restrict editing
        buffer to current item, otherwise make entire buffer (i.e. whole
        file) editable.
        (todos-edit-quit): When whole file is editable, check file format
        validity before killing buffer, and if valid, recalculate
        categories sexp to be safe.
        (todos-edit-item-header): Allow choosing date from calendar.
        (todos-item-done): Handle marked items.

2012-09-19  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2011-12-03 (revision 109998).
        * calendar/todos.el (todos-item-start): Restore commented out code
        to prevent wrongly moving point in widened buffer.

2012-09-19  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2011-12-02 (revision 109997).
        * calendar/todos.el: Remove old commentary from todo-mode.el; add
        and revise further doc strings and comments; require cl.el at
        compile time for remove-duplicates; use function powerset from
        http://rosettacode.org/wiki/Power_set#Common_Lisp (GFDL); further
        code rearrangement.  Add adapted version of diary-goto-entry as comment.
        (todos-file-top, todos-archived-categories-buffer)
        (todos-save-top-priorities-too, todos-toggle-item-diary-inclusion)
        (todos-save-top-priorities, todos-reset-separator)
        (todos-switch-todos-file, todos-item-string-start, todos-counts)
        (todos-string-count-lines, todos-string-multiline-p)
        (todos-display-categories-alphabetically): Remove.
        (todos-insert-item-ask-date, todos-insert-item-ask-date-time)
        (todos-insert-item-ask-date-time-for-diary)
        (todos-insert-item-ask-date-time-for-diary-here)
        (todos-insert-item-ask-date-time-here)
        (todos-insert-item-ask-date-maybe-notime)
        (todos-insert-item-ask-date-maybe-notime-for-diary)
        (todos-insert-item-ask-date-maybe-notime-for-diary-here)
        (todos-insert-item-ask-date-maybe-notime-here)
        (todos-insert-item-ask-date-for-diary)
        (todos-insert-item-ask-date-for-diary-here)
        (todos-insert-item-ask-date-here, todos-insert-item-ask-dayname)
        (todos-insert-item-ask-dayname-time)
        (todos-insert-item-ask-dayname-time-for-diary)
        (todos-insert-item-ask-dayname-time-for-diary-here)
        (todos-insert-item-ask-dayname-time-here)
        (todos-insert-item-ask-dayname-maybe-notime)
        (todos-insert-item-ask-dayname-maybe-notime-for-diary)
        (todos-insert-item-ask-dayname-maybe-notime-for-diary-here)
        (todos-insert-item-ask-dayname-maybe-notime-here)
        (todos-insert-item-ask-dayname-for-diary)
        (todos-insert-item-ask-dayname-for-diary-here)
        (todos-insert-item-ask-dayname-here, todos-insert-item-ask-time)
        (todos-insert-item-ask-time-for-diary)
        (todos-insert-item-ask-time-for-diary-here)
        (todos-insert-item-ask-time-here)
        (todos-insert-item-maybe-notime)
        (todos-insert-item-maybe-notime-for-diary)
        (todos-insert-item-maybe-notime-for-diary-here)
        (todos-insert-item-maybe-notime-here)
        (todos-insert-item-for-diary, todos-insert-item-for-diary-here)
        (todos-insert-item-here): Remove; all of these are now generated
        on loading (some with the same name, most with other names.)
        (todos-item-counts, todos-display-categories-alphabetically)
        (todos-display-categories-sorted-by-todo)
        (todos-display-categories-sorted-by-diary)
        (todos-display-categories-sorted-by-done)
        (todos-display-categories-sorted-by-archived): Comment out.
        (todos-comment-string, todos-mode-line-function)
        (todos-filter-function, todos-priorities-rules)
        (todos-visit-files-commands, todos-categories-totals-label)
        (todos-use-only-highlighted-region, todos-diary-nonmarking):
        New defcustoms.
        (todos-mark, todos-comment): New faces.
        (todos-comment-face): Corresponding new variable.
        (todos-categories-full, todos-global-current-todos-file)
        (todos-first-visit, todos-insertion-commands-args-genlist)
        (todos-insertion-commands-args, todos-insertion-commands-names)
        (todos-insertion-commands, todos-insertion-commands-arg-key-list)
        (todos-top-priorities-widgets, todos-date-from-calendar)
        (todos-item-mark, todos-categories-with-marks): New variables.
        (todos-mode-line-control, todos-reset-global-current-todos-file)
        (todos-gen-arglists, todos-insertion-command-name)
        (todos-insertion-key-bindings, todos-unload-hook)
        (todos-filter-items, todos-set-date-from-calendar)
        (todos-comment-string-matcher, todos-after-find-file)
        (todos-reset-nondiary-marker, todos-reset-done-string)
        (todos-reset-comment-string, todos-show-current-file)
        (todos-item-marked-p, todos-total-item-counts): New functions.
        (todos-define-insertion-command): New macro.
        (todos-toggle-mark-item, todos-mark-category)
        (todos-unmark-category, todos-set-top-priorities)
        (todos-merged-diary-items, todos-regexp-items)
        (todos-merged-regexp-items, todos-custom-items)
        (todos-merged-custom-items, todos-comment-done-item)
        (todos-archive-category-done-items, todos-unarchive-items)
        (todos-print-to-file): New commands.
        (todos-done-separator): Change :set function.
        (todos-done-string): Uncomment :initialize and :set functions.
        (todos-files): Use file-truename.
        (todos-show-current-file): Rename from
        todos-auto-switch-todos-file and change :set function accordingly.
        (todos-font-lock-keywords): Use todos-comment-string-matcher;
        change names of other matcher functions to new *-matcher.
        (todos-category-number): Change initial value.
        (todos-insertion-map): Use todos-insertion-key-bindings to
        generate key definitions.
        (todos-mode-map): Don't suppress digit keys, so they can supply
        prefix arguments; add new and change some existing bindings.
        (todos-archive-mode-map): Change a key binding.
        (todos-categories-mode-map): Comment out a key binding.
        (todos-filter-items-mode-map): Rename from
        todos-top-priorities-mode-map.
        (todos-mode): Make todos-current-todos-file,
        todos-categories-full, todos-categories, todos-first-visit,
        todos-category-number, todos-show-done-only,
        todos-categories-with-marks local variables and set them; add
        todos-show-current-file to pre-command-hook, todos-after-find-file
        to post-command-hook and todos-reset-global-current-todos-file to
        kill-buffer-hook.
        (todos-archive-mode): Make todos-current-todos-file,
        todos-categories and todos-category-number local variables and set
        them; add todos-after-find-file to post-command-hook.
        (todos-raw-mode): New derived major mode.
        (todos-categories-mode): Don't set font-lock-defaults and
        buffer-read-only; make todos-current-todos-file and
        todos-categories local variables and set them.
        (todos-filter-items-mode): Rename from todos-top-priorities-mode-map.
        (todos-quit): Don't reset todos-categories on quitting
        todos-categories-mode; handle quitting todos-filter-items-mode.
        (todos-show): Simplify; when visiting an archive file switch to
        corresponding Todos file; use todos-first-visit.
        (todos-view-archived-items): Simplify; call todos-category-number.
        (todos-show-archive): Rename from todos-switch-to-archive and
        adjust callers; simplify.
        (todos-toggle-display-date-time): Add optional argument to toggle
        display in entire file.
        (todos-top-priorities): Use todos-filter-items, which now contains
        the previous core of this command.
        (todos-merged-top-priorities, todos-diary-items):
        Use todos-filter-items.
        (todos-forward-category): Add optional argument to go to the
        previous category.
        (todos-backward-category): Use todos-forward-category.
        (todos-jump-to-category): Refine implementation.
        (todos-forward-item, todos-backward-item): Fix movement from todo
        to done item and vice versa.
        (todos-add-file): Remove argument and simplify.
        (todos-rename-category): Use todos-current-todos-file and
        todos-mode-line-function; set todos-categories with
        todos-set-categories.
        (todos-delete-category): Ask what to do if category has archived items.
        (todos-raise-category): Ensure modified todos-categories is added
        to file's categories sexp.
        (todos-move-category): Improve implementation, especially handling
        of archived categories.
        (todos-merge-category): Tweak; set item counts.
        (todos-insert-item): Improve handling of various argument values;
        add new argument values to control marking of diary items and to
        use region for item body.
        (todos-insert-item-from-calendar): Use todos-global-current-todos-file.
        (todos-delete-item, todos-edit-item-header): Handle marked items.
        (todos-edit-item): Incorporate functionality of removed
        todos-string-multiline-p.
        (todos-edit-multiline): Use set-window-buffer instead of
        switch-to-buffer.
        (todos-edit-quit): Don't save on quitting; use todos-show instead
        of todos-category-select.
        (todos-raise-item-priority): Add argument to lower priority;
        improve handling of top priority items in todos-filter-items-mode;
        restore marks.
        (todos-lower-item-priority): Use todos-raise-item-priority.
        (todos-set-item-priority): Increment maximum number if item is new.
        (todos-move-item): Handle marked items; delay changing category
        moved from till after movement to avoid restoring if user cancels
        before insertion.
        (todos-item-done): Add optional argument to insert comment; fix
        item counts and update sexp.
        (todos-item-undo): Fix item counts and update.
        (todos-archive-done-item-or-items): Rename from
        todos-archive-done-items; add optional argument to archive all
        items in category; handle marked items.
        (todos-unarchive-category): Use todos-unarchive-items.
        (todos-toggle-diary-inclusion): Incorporate functionality of
        removed todos-toggle-item-diary-inclusion; handle marked items.
        (todos-print): Add optional argument to print to file.
        (todos-done-string-start): Don't use todos-nondiary-start.
        (todos-date-string-matcher, todos-time-string-matcher)
        (todos-done-string-matcher, todos-category-string-matcher): Rename
        from *-match and adjust callers.
        (todos-wrap-and-indent): Use set instead of setq for local variables.
        (todos-prefix-overlays): Improve overlay handling.
        (todos-reset-categories): Fix and complete implementation.
        (todos-toggle-show-current-file): Rename from
        todos-toggle-switch-todos-file-noninteractively.
        (todos-category-select): Use todos-mode-line-function.
        (todos-item-start): Comment out code used by removed function.
        (todos-remove-item): Handle presence of both prefix/number and
        mark overlays.
        (todos-get-count): Simplify.
        (todos-set-count): Change argument list and adjust callers; simplify.
        (todos-set-categories): Handle new archive files; use
        todos-categories-full and todos-ignore-archived-categories.
        (todos-truncate-categories-list): Use todos-categories-full.
        (todos-update-categories-sexp): Use kill-region instead of
        kill-line; use todos-categories-full.
        (todos-read-file-name): Add argument to require existing file and
        adjust callers; use file-truename.
        (todos-read-category): Remove argument to require existing
        category and delegate it to completing-read in function body.
        (todos-validate-category-name): Make empty string prompt only for
        initial category name.
        (todos-read-date): Use = instead of eq for testing if month = 13,
        and if it is, set monthname to *.
        (todos-display-categories): Use todos-global-current-todos-file;
        use set-window-buffer instead of switch-to-buffer; add a line
        showing item count totals.
        (todos-padded-string): Use the longest of category name or label.
        (todos-descending-counts): Rename from
        todos-descending-counts-store and adjust users.
        (todos-insert-category-line): Adjust format; use mapconcat; kill
        buffer after jumping to category.

2012-09-18  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2011-05-16 (revision 109996).
        * calendar/todos.el Add and revise various doc strings, remove
        further commented out code; add further comments; further code
        rearrangement.
        (todos-file-do, todos-archive-file, todos-mode-hook)
        (todos-edit-mode-hook, todos-exclusion-start, todos-exclusion-end)
        (todos-view-archive, todos-search-string)
        (todos-jump-to-category-noninteractively, todos-initial-setup):
        Remove.
        (todos-files): Remove this defcustom.
        (todos-initial-category, todos-display-categories-first)
        (todos-auto-switch-todos-file, todos-default-todos-file)
        (todos-categories-category-label, todos-categories-todo-label)
        (todos-categories-diary-label, todos-categories-done-label)
        (todos-categories-archived-label)
        (todos-categories-number-separator, todos-categories-align)
        (todos-ignore-archived-categories, todos-nondiary-marker):
        New defcustoms.
        (todos-prefix, todos-done-separator, todos-file-top)
        (todos-categories-buffer, todos-archived-categories-buffer)
        (todos-edit-buffer, todos-always-add-time-string, todos-button):
        Change default value.
        (todos-done-string): Add todos-reset-done-string as :set function,
        but keep this commented out.
        (todos-files, todos-archives, todos-insertion-map)
        (todos-category-done, todos-nondiary-start, todos-nondiary-end)
        (todos-show-done-only, todos-date-string-start)
        (todos-done-string-start): New variables.
        (todos-files-directory, todos-files-function, todos-merged-files)
        (todos-prompt-merged-files, todos-files, todos-modes-set-1)
        (todos-modes-set-2, todos-reset-done-string, todos-reset-categories)
        (todos-toggle-switch-todos-file-noninteractively)
        (todos-switch-todos-file, todos-counts, todos-get-count)
        (todos-set-count, todos-set-categories)
        (todos-truncate-categories-list, todos-update-categories-sexp)
        (todos-read-file-name, todos-sort, todos-display-sorted)
        (todos-label-to-key, todos-insert-sort-button): New functions.
        (todos-display-categories-sorted-by-todo)
        (todos-display-categories-sorted-by-diary)
        (todos-display-categories-sorted-by-done)
        (todos-display-categories-sorted-by-archived)
        (todos-update-merged-files, todos-switch-to-archive)
        (todos-choose-archive, todos-merged-top-priorities)
        (todos-jump-to-category-other-file, todos-clear-matches)
        (todos-add-file, todos-change-default-file, todos-move-category)
        (todos-merge-category, todos-merge-categories)
        (todos-edit-item-time, todos-move-item-to-file)
        (todos-unarchive-category, todos-toggle-item-diary-nonmarking)
        (todos-toggle-diary-nonmarking): New commands.
        (todos-toggle-show-done-only): New command replacing todos-view-archive.
        (todos-faces): New defgroup; use in all face definitions.
        (todos-sorted-column, todos-archived-only, todos-search): New faces.
        (todos-font-lock-keywords): Use subexpression 1 with matcher
        todos-category-string-match.
        (todos-mode-map, todos-archive-mode-map, todos-edit-mode-map)
        (todos-categories-mode-map): Add new key bindings; change some
        existing bindings.
        (todos-top-priorities-mode-map): New keymap.
        (todos-menu): Add submenues and new entries.
        (auto-mode-alist): Add extension of Todos and Todos archive files.
        (todos-mode, todos-archive-mode): Make derived mode; use
        todos-modes-set-1, todos-modes-set-2, todos-auto-switch-todos-file
        and todos-switch-todos-file; make todos-show-done-only local
        variable.
        (todos-edit-mode): Make derived mode; use todos-modes-set-1.
        (todos-categories-mode): Make derived mode.
        (todos-top-priorities-mode): New derived major mode.
        (todos-save): Remove unused code.
        (todos-quit): Handle todos-categories-mode; save archive buffer.
        (todos-show): Add optional argument to prompt for a Todos file; if
        called interactively or with prefix arg or from an archive, don't
        make a no-op but reset todos-current-todos-file, todos-categories
        and todos-category-number; use todos-read-file-name,
        todos-display-categories-first, todos-ignore-archived-categories.
        (todos-display-categories): Change argument name; refactor code
        for inserting table labels and lines, using
        todos-ignore-archived-categories, todos-sort,
        todos-categories-number-separator, todos-insert-sort-button,
        todos-categories-*-labels, and todos-insert-category-line.
        (todos-display-categories-alphabetically): Use todos-display-sorted.
        (todos-toggle-view-done-items): Use todos-done-string-start and
        todos-get-count.
        (todos-toggle-display-date-time): Use todos-done-string-start.
        (todos-top-priorities): Remove autoload cookie; partially rewrite:
        new argument list; allow combining top priorities of multiple
        Todos files; change display to include category (and file) name as
        part of item header; use todos-top-priorities-mode.
        (todos-diary-items): Reimplement using only todos-top-priorities.
        (todos-forward-category, todos-backward-category): Adjust to
        1-based numbering of categories; move point to top of category.
        (todos-jump-to-category): Rewrite, adding optional arguments to
        provide a category in non-interactive uses and to prompt for which
        Todos file to jump to.
        (todos-search): Reimplement; highlight each match as found, say
        how many matches remain and prompt whether to go to next one; at
        end of search prompt whether to remove highlighting.
        (todos-add-category): Remove autoload cookie; assign new category
        the highest category number; associate zero-initialized vector of
        item counts, instead of property list, with new category; use
        todos-validate-category-name and todos-update-categories-sexp.
        (todos-rename-category): Use todos-validate-category-name and
        todos-update-categories-sexp; take archive files into account.
        (todos-delete-category): Use todos-get-count and
        todos-update-categories-sexp, let-bind variable that were
        mistakenly global; use delete-region instead of kill-region;
        adjust to 1-based numbering of categories; move point to top of
        category.
        (todos-raise-category): Handle item count vectors; use
        todos-insert-category-line and todos-update-categories-sexp.
        (todos-insert-item): Use nil time-string argument to omit time
        string; use todos-nondiary-start and todos-nondiary-end and
        todos-update-categories-sexp; if category named to insert into
        does not exist, add it; take new diary items into account.
        (todos-insert-item-ask-date, todos-insert-item-ask-date-time)
        (todos-insert-item-ask-date-time-for-diary)
        (todos-insert-item-ask-date-time-for-diary-here)
        (todos-insert-item-ask-date-time-here)
        (todos-insert-item-ask-date-maybe-notime)
        (todos-insert-item-ask-date-maybe-notime-for-diary)
        (todos-insert-item-ask-date-maybe-notime-for-diary-here)
        (todos-insert-item-ask-date-maybe-notime-here)
        (todos-insert-item-ask-date-for-diary)
        (todos-insert-item-ask-date-for-diary-here)
        (todos-insert-item-ask-date-here, todos-insert-item-ask-dayname)
        (todos-insert-item-ask-dayname-time)
        (todos-insert-item-ask-dayname-time-for-diary)
        (todos-insert-item-ask-dayname-time-for-diary-here)
        (todos-insert-item-ask-dayname-time-here)
        (todos-insert-item-ask-dayname-maybe-notime)
        (todos-insert-item-ask-dayname-maybe-notime-for-diary)
        (todos-insert-item-ask-dayname-maybe-notime-for-diary-here)
        (todos-insert-item-ask-dayname-maybe-notime-here)
        (todos-insert-item-ask-dayname-for-diary)
        (todos-insert-item-ask-dayname-for-diary-here)
        (todos-insert-item-ask-dayname-here, todos-insert-item-ask-time)
        (todos-insert-item-ask-time-for-diary)
        (todos-insert-item-ask-time-for-diary-here)
        (todos-insert-item-ask-time-here)
        (todos-insert-item-maybe-notime)
        (todos-insert-item-maybe-notime-for-diary)
        (todos-insert-item-maybe-notime-for-diary-here)
        (todos-insert-item-maybe-notime-here)
        (todos-insert-item-for-diary, todos-insert-item-for-diary-here):
        New insertion commands.
        (todos-insert-item-from-calendar): Use todos-current-todos-file.
        (todos-delete-item): Handle diary items;
        use todos-update-categories-sexp.
        (todos-edit-item): Check if point is with item string;
        use read-string instead of read-from-minibuffer;
        use todos-date-string-start; after editing put point at start of
        item text.
        (todos-edit-multiline): Narrow to item before invoking
        todos-edit-mode; show key binding of todos-edit-quit in a message.
        (todos-edit-quit): Use todos-save; kill buffer.
        (todos-edit-item-header): Add optional argument to prompt for
        editing only date string or only time string;
        use todos-date-string-start.
        (todos-edit-item-date, todos-edit-item-date-is-today)
        (todos-raise-item-priority, todos-lower-item-priority): Rename
        from todos-{raise, lower}-item and make them DTRT in
        todos-top-priorities-mode.
        (todos-set-item-priority): Make interactive; use todos-get-count
        and todos-insert-with-overlays; interactively, just relocate the
        item within its category.
        (todos-move-item): Add optional argument to prompt for a category
        in another Todos file; handle diary items; fix restoration after
        cancelling before inserting.
        (todos-item-done): Handle diary items; simplify handling of
        insertion in done items section.
        (todos-item-undo): Handle diary items.
        (todos-archive-done-items): Adjust to new handling of archive
        files (in parallel with Todos files); handle diary items; use
        todos-done-string-start.
        (todos-toggle-item-diary-inclusion): Use todos-nondiary-start,
        todos-nondiary-end and todos-item-counts.
        (todos-toggle-diary-inclusion): Use todos-category-done instead of
        todos-category-end.
        (todos-print): Remove autoload cookie; rewrite to make overlays,
        line wrapping and wrap prefixes printable.
        (todos-date-pattern): Make parenthesized groups shy.
        (todos-date-string-match): Use todos-date-string-start; make
        todos-date-pattern an explicitly numbered group.
        (todos-time-string-match): Use todos-date-string-start.
        (todos-done-string-match): Use todos-done-string-start.
        (todos-category-string-match): Rewrite to match new category and
        category+filename patterns in todos-top-priorities-mode.
        (todos-prefix-overlays): Use todos-done-string-start and
        todos-category-done.
        (todos-reset-prefix): Handle archive files; restore point after
        changing prefix.
        (todos-reset-separator): Handle archive files.
        (todos-category-number): Make category number one more than its
        list index.
        (todos-current-category): Adjust to 1-based numbering of categories.
        (todos-category-select): Simplify handling of done items and done
        separator string overlay.
        (todos-item-start): Use todos-date-string-start and
        todos-done-string-start.
        (todos-item-start, todos-item-end): Fix wrong parenthesizing.
        (todos-item-string): Restore point after getting item bounds; use
        buffer-substring-no-properties.
        (todos-done-item-p): Use todos-done-string-start.
        (todos-make-categories-list): Add optional argument to force
        looping through file to get categories and their item counts,
        otherwise set todos-categories from sexp in first line; use
        vectors of item counts instead of plists; count diary items.
        (todos-item-counts): Use todos-counts, todos-set-counts,
        todos-get-counts, and todos-update-categories-sexp instead of
        getting and setting properties; handle diary items.
        (todos-read-category): Add argument to set prompt; don't offer
        default category.
        (todos-validate-category-name): Rename from
        todos-check-category-name; take into account whether there are
        already categories or not.
        (todos-read-date): Accept `*' as an unspecified month, day, or year.
        (todos-padded-string): Accommodate new structure of
        todos-categories as alists; use todos-categories-align.
        (todos-descending-counts-store): New variable.
        (todos-insert-category-line): Rename from
        todos-insert-category-name and reimplement using labels and
        todos-get-counts instead of properties; use
        todos-ignore-archived-categories; highlight sorted column.

2012-09-14  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2010-07-09 (revision 109995).
        * calendar/todos.el Remove lots of commented out code; add various
        comments; further code rearrangement.
        (todos-insert-item-here-ask-date-time)
        (todos-insert-item-ask-date-time)
        (todos-insert-item-ask-dayname-time)
        (todos-insert-item-for-diary)
        (todos-insert-item-for-diary-ask-date-time)
        (todos-make-categories-alist, todos-categories-alist): Remove.
        (todos-categories-list): Comment out.
        (todos-make-categories-list): New function replacing
        todos-make-categories-alist, using category plists to get item
        counts and taking archive into account.
        (todos-current-todos-file): New variable.
        (todos-mode-map): Update key bindings.
        (todos-save): Add as comment code to make sure todos-categories
        sexp is current on saving.
        (todos-quit): Call todos-show on quitting Todos archive buffer.
        (todos-show): If todos-current-todos-file is not set to Todos
        file, set it as a new file; set todos-categories from
        todos-make-categories-alist.
        (todos-display-categories): Use a different display format for
        archive file; put point initially on the first button.
        (todos-toggle-view-done-items): Check the category's `done'
        property to determine if there are done items.
        (todos-view-archive): Set todos-current-todos-file to the archive
        file; jump from the Todos file to the same category in the
        archive, if it exists, else jump to the first category; use
        message instead of error.
        (todos-add-category): Intern a special symbol for the new category
        and set its property list to holds counts of the numbers of todo,
        done and archived items in the category; assign the new category
        the current highest category number.
        (todos-rename-category): Don't use todos-categories-alist.
        (todos-delete-category): Check the category's `todo' and `done'
        properties to determine if it is empty; ensure that the end of the
        last category is found; after deleting the category, empty its
        plist and unintern its special symbol.
        (todos-insert-item-here): Fix argument list of todos-insert-item.
        (todos-delete-item, todos-raise-item, todos-lower-item):
        Use message instead of error.
        (todos-move-item): If the category to be moved to does not exist,
        add it as a new category.
        (todos-item-done, todos-reset-separator):
        Use todos-category-select instead of todos-show.
        (todos-archive-done-items): Make buffer writeable; conditionalize
        search for end of category; save after adding to archive in case
        the file is new, so it can be found.
        (todos-category-select): Wrap search in if instead of or+and;
        don't hide done items in an archive.
        (todos-set-item-priority): Check the category's `todo'
        property to determine if there are not done todo items.
        (todos-jump-to-category-noninteractively): Just switch to buffer
        visiting todos-current-todos-file, since this can be either a
        Todos file or an archive.
        (todos-item-counts): Use category's plist instead of an alist.
        (todos-longest-category-name-length): Argument is now a list of
        category names, not an alist, so just test each element, not each
        element's the car.
        (todos-padded-string): Use todos-categories instead of
        todos-categories-alist.
        (todos-insert-category-name): Use category plist to get item
        counts; take archived items into account.

2012-09-13  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2010-06-18 (revision 109994).
        * calendar/todos.el: Numerous spelling and comment fixes, doc
        string fixes to conform with checkdoc, further rearrangement of
        definitions, etc.
        (todos-previous-line, todos-previous-answer)
        (todos-insert-item-ask-date, todos-change-date)
        (todos-date-nodayname-pattern, todos-dayname-date-pattern)
        (todos-count-items-in-category, todos-count-all-items): Remove.
        (todos-update-numbered-prefix, todos-item-start-overlays)
        (todos-add-item-non-interactively): Comment out, also in uses.
        (todos-done-separator): Change default value.
        (todos-always-add-time-string): Rename from todos-add-time-string
        and adjust uses.
        (todos-read-category): Rename from todos-completing-read and
        adjust callers; use todos-current-category.
        (todos-make-categories-alist): Rename from function
        todos-categories-alist.
        (todos-categories-alist): New variable.
        (todos-indent-to-here): New defcustom.
        (todos-button): New face.
        (todos-display-categories-alphabetically, todos-raise-category)
        (todos-lower-category, todos-insert-item-for-diary-ask-date-time)
        (todos-insert-item-here-ask-date-time)
        (todos-insert-item-ask-date-time)
        (todos-insert-item-ask-dayname-time): New commands.
        (todos-edit-item-header): New command replacing todos-change-date.
        (todos-category-number, todos-indent, todos-item-counts)
        (todos-check-category-name, todos-read-date, todos-read-dayname)
        (todos-read-time, todos-padded-string)
        (todos-insert-category-name): New functions.
        (todos-set-item-priority): New function replacing
        todos-add-item-non-interactively.
        (todos-mode-map): Remap newline to newline-and-indent.
        (todos-edit-mode-map): Make sparse keymap; remap newline to
        newline-and-indent.
        (todos-categories-mode-map): New keymap.
        (todos-mode, todos-edit-mode): Make indent-line-function local
        variable and set to todos-indent.
        (todos-categories-mode): New major mode.
        (todos-display-categories): List categories initially in their
        numerical order; add optional argument to switch to alphabetical
        listing.
        (todos-toggle-view-done-items): Simplify implementation.
        (todos-toggle-display-date-time): Fix regexp search string.
        (todos-backward-item, todos-forward-item): Use variable
        todos-item-start.
        (todos-add-category): Use todos-check-category-name and
        todos-categories-alist.
        (todos-rename-category): Use todos-current-category,
        todos-check-category-name and todos-categories-alist.
        (todos-delete-category): Use todos-check-category-name and
        todos-categories-alist and take done items into account.
        (todos-insert-item): Use separate arguments to handle insertion of
        date/dayname and time strings, add new argument to mark item for
        diary inclusion, use new todos-read-* functions,
        todos-set-item-priority and todos-item-counts.
        (todos-insert-item-here, todos-insert-item-for-diary)
        (todos-insert-item-from-calendar): Adapt to new version of
        todos-insert-item.
        (todos-delete-item, todos-item-done): Use todos-item-counts.
        (todos-edit-item): Indent newlines inserted by C-q C-j if nonspace
        char follows.
        (todos-lower-item): Ensure only not-done items can be lowered.
        (todos-move-item): Use todos-current-category, todos-read-category
        and todos-item-counts.
        (todos-archive-done-items): Use todos-current-category and
        todos-item-counts; fix regexp search string.
        (todos-item-undo): Use todos-current-category,
        todos-set-item-priority, todos-insert-with-overlays and
        todos-item-counts; restore if user quits before inserting undone
        item.
        (todos-date-pattern): Rewrite without using
        todos-date-nodayname-pattern and todos-dayname-date-pattern.
        (todos-date-string-match): Do not make todos-date-pattern an
        unnumbered group.
        (todos-time-string-match): Make todos-date-pattern a shy group.
        (todos-wrap-and-indent): Use todos-indent-to-here.
        (todos-reset-prefix): Revert to using todos-show instead of
        todos-category-select.
        (todos-prefix-overlays): Fix numbering of done items and updating
        of prefix.
        (todos-category-select): Use todos-current-category; fix display
        of separator string; don't move point to top of category.
        (todos-jump-to-category-noninteractively): Use todos-category-number.
        (todos-insert-with-overlays): Use todos-item-start unconditionally.
        (todos-item-start): New variable.
        (todos-item-start): Use it to define this function.
        (todos-item-end): Adjust if item is last unfinished one before
        displayed done items.
        (todos-remove-item): Use todos-item-start and todos-item-end
        instead of todos-forward-item and todos-backward-item.
        (todos-longest-category-name-length): Add argument for list of
        categories.

2012-09-13  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2010-05-25 (revision 109993).
        * calendar/todos.el: Comment out calendar require, since diary-lib
        requires calendar.  Rearrange file to group definitions according
        to their use (types of commands, internal functions, etc.)
        (todos-file-done, todos-insert-threshold, todos-remove-separator)
        (todos-date-string, todos-time-string, todos-check-overlay)
        (todos-show-paren-hack, todos-file-item, todos-more-important-p):
        Comment out.
        (todos-current-date, todos-item-end-overlays)
        (todos-list-categories): Remove.
        (todos-item-end): Remove (the variable, not the function).
        (todos-prefix-overlays): Rename from todos-item-overlays and adjust
        callers.
        (todos-done-separator, todos-done-string, todos-show-with-done)
        (todos-files, todos-archive-file, todos-categories-buffer)
        (todos-archived-categories-buffer, todos-wrap-lines)
        (todos-line-wrapping-function): New defcustoms.
        (todos-done, todos-done-sep): New faces.
        (todos-done-face, todos-done-sep-face): Corresponding new variables.
        (todos-search-string, todos-date-nodayname-pattern)
        (todos-dayname-date-pattern, todos-date-pattern): New variables.
        (todos-done-string-match, todos-category-string-match)
        (todos-check-format, todos-wrap-and-indent, todos-reset-separator)
        (todos-current-category, todos-count-items-in-category)
        (todos-done-item-p, todos-categories-alist, todos-count-all-items)
        (todos-longest-category-name-length): New functions.
        (todos-categories-list): New buffer-specific function replacing
        todos-list-categories.
        (todos-toggle-item-numbering, todos-toggle-view-done-items)
        (todos-search, todos-view-archive, todos-diary-items)
        (todos-toggle-display-date-time, todos-insert-item-no-time)
        (todos-insert-item-ask-date, todos-insert-item-for-diary)
        (todos-insert-item-from-calendar, todos-edit-quit)
        (todos-change-date, todos-item-done, todos-archive-done-items)
        (todos-item-undo): New commands.
        (todos-archive-mode): New major mode.
        (todos-archive-mode-map, todos-edit-mode-map): New keymaps.
        (todos-category-beg): Change value.
        (todos-number-prefix): Change default value.
        (todos-edit-buffer): Change from defvar to defcustom.
        (todos-font-lock-keywords): Use todos-done-string-match and
        todos-category-string-match.
        (todos-backward-item, todos-forward-item): Use todos-done-string
        and todos-date-pattern.
        (todos-display-categories): Reimplement using buttons from
        button.el instead of widgets.
        (todos-top-priorities): Use with-current-buffer; take done items
        into account; ensure buffers gets fontified.
        (todos-add-category): Ensure new category does not begin with
        empty lines.
        (todos-jump-to-category): Use todos-category-select instead of
        todos-show.
        (todos-rename-category): Prompt for new name in body instead of in
        interactive spec.
        (todos-insert-item): Don't insert in done items section of
        category.  Add two optional arguments to control insertion: (i) to
        insert near point without prompting for priority; (ii) to use
        defaults for date and time strings, to prompt for these, or to
        choose date from the Calendar.
        (todos-insert-item-here): Reimplement using todos-insert-item.
        (todos-delete-item): Don't move point after deleting last item.
        (todos-raise-item, todos-lower-item): Take done items into account.
        (todos-move-item): Don't move done items; update item numbering;
        restore if user quits before inserting moved item.
        (todos-print): Prompt for confirmation to print.
        (todos-reset-prefix): Search backward from end of file instead of
        forward from top.
        (todos-jump-to-category-noninteractively): Take Todos archive into
        account.
        (todos-category-select): Show or hide done items according to
        todos-show-with-done; if shown, coordinate separator and prefix
        overlays.
        (todos-add-item-non-interactively): Replace binary insertion
        algorithm with prompting for numerical priority.
        (todos-insert-with-overlays): Remove use of variable todos-item-end.
        (todos-item-start): Take done items into account; use
        todos-date-pattern.
        (todos-item-end): Reimplement using todos-forward-item.
        (todos-remove-item): Reimplement using todos-forward-item and
        todos-backward-item; redo overlay handling.
        (todos-mode-map): Add some new key bindings and change numerous
        existing bindings; use "i" as prefix key for item insertion
        commands.
        (todos-mode): Use todos-wrap-lines and delegate word-wrap and
        wrap-prefix settings to todos-wrap-and-indent; add to invisibility
        spec; set buffer-read-only to t and consequently let-bind this
        variable in all Todos commands that change buffer content.
        (todos-edit-mode): Make an indepent mode, not derived from text-mode.
        (todos-save): Don't save top priorities buffer.
        (todos-show): Make a no-op if called interactively in narrowed
        Todos mode, since, also to work around item prefix reduplication
        bug with show-paren-mode enabled; use todos-categories-list.

2012-09-12  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2009-11-07 (revision 109992).
        * calendar/todos.el: Comment out time-stamp require; require
        calendar and diary-lib.
        (todos-prefix): Change default value and doc string to reflect new
        meaning; add :initialize and :set functions.
        (todos-time-string-format, todos-entry-prefix-function)
        (todos-initials, todos-entry-timestamp-initials)
        (todos-prefix-face, todos-category-sep, todos-category-end)
        (todos-cp): Comment out.
        (todos-prefix-string): Inherit from font-lock-comment-face.
        (todos-item-header, todos-item-header-face): Remove.
        (todos-date, todos-time): New faces.
        (todos-date-face, todos-time-face): Corresponding new variables.
        (todos-add-time-string, todos-include-in-diary)
        (todos-exclusion-start, todos-exclusion-end, todos-number-prefix):
        New defcustoms.
        (todos-item-end, todos-item-start-overlays)
        (todos-item-end-overlays): New variables.
        (todos-date-string-match, todos-time-string-match): New functions.
        (todos-font-lock-keywords): Use them.
        (todos-current-date, todos-date-string, todos-time-string)
        (todos-toggle-item-diary-inclusion, todos-toggle-diary-inclusion)
        (todos-reset-prefix, todos-update-numbered-prefix)
        (todos-check-overlay, todos-item-overlays)
        (todos-insert-with-overlays, todos-show-paren-hack): New functions.
        (todos-highlight-item): New command.
        (todos-category-beg): Change value.
        (todos-category-select): Use todos-category-beg and todos-item-overlays.
        (todos-backward-item): Add optional count argument; use it and
        todos-item-start.
        (todos-forward-item): Use todos-check-overlay, todos-item-start
        and variable todos-item-end.
        (todos-edit-item, todos-delete-item): Use todos-number-prefix,
        todos-update-numbered-prefix, todos-item-overlays.
        (todos-add-category, todos-rename-category)
        (todos-list-categories): Use new category format.
        (todos-delete-category): Allow deleting non-empty category;
        use new category format.
        (todos-add-item-non-interactively): Comment out unnecessary
        save-excursion; use todos-insert-with-overlays.
        (todos-insert-item): Comment out unnecessary save-excursion; use
        new item format for date/time header and diary inclusion marking.
        (todos-insert-item-here): Use new item format for date/time header
        and diary inclusion marking; use todos-insert-with-overlays.
        (todos-raise-item): Make a no-op if point is on an empty line; use
        todos-insert-with-overlays.
        (todos-lower-item): Use todos-insert-with-overlays.
        (todos-top-priorities): Move call to todos-show inside
        save-excursion; add save-current-buffer after save-restriction.
        (todos-item-start): Use variable todos-item-end.
        (todos-item-end): Use todos-check-overlay and variable todos-item-end.
        (todos-remove-item): Take item overlays into account.
        (todos-mode): Change calculation of wrap-prefix; make
        hl-line-range-function a local variable and set it to highlight
        todo item.
        (todos-show): Ensure point stays at top of category.

2012-09-12  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2009-07-04 (revision 109991).
        * calendar/todos.el (todos-window-configuration): Comment out.
        (todos-display-categories): Comment out use of
        todos-window-configuration; use switch-to-buffer instead of
        pop-to-buffer.
        (todos-jump-to-category-noninteractively): Comment out use of
        todos-window-configuration.
        (todos-edit-item): Don't allow editing of date/time item header.
        (todos-insert-item, todos-insert-item-here): Insert date/time
        header in front of new item string.
        (todos-mode): Tweak wrap-prefix.

2012-09-12  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2009-06-26 (revision 109989).
        * calendar/todos.el (todos-file-do, todos-file-done):
        Change default location to directory "~/.emacs.d/".
        (todos-completion-ignore-case, todos-categories-buffer):
        New defcustoms.
        (todos-prefix-string, todos-item-header): New faces.
        (todos-prefix-face, todos-item-header-face): Corresponding
        new variables.
        (todos-rename-category, todos-delete-category)
        (todos-display-categories, todos-move-item): New commands.
        (todos-mode-map): Add key bindings for new commands and for
        todos-add-category, which had no key binding.
        (todos-jump-to-category-noninteractively): New function.
        (todos-top-priorities): Comment out code using a previously
        deleted variable.
        (todos-completing-read): Allow SPC to insert a space when entering
        a new category name; use todos-completion-ignore-case.
        (todos-font-lock-keywords, todos-window-configuration):
        New variables.
        (todos-mode): Make mode-name "TODOS"; make font-lock-defaults,
        word-wrap, and wrap-prefix local variables.

2012-09-12  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2009-02-16 (revision 109988).
        * calendar/todos.el (todos-list-categories): Fix typos.
        (todos-show): Ensure file is in todos-mode.

2012-09-12  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2009-02-12 (revision 109987).
        * calendar/todos.el (todos-header): Remove defvar.
        (todos-add-category): Comment out code that inserts and updates
        the file local variables first line of the file todos-file-do.
        (todos-list-categories): New function.
        (todos-show): Use it; remove use of a previously deleted variable.

2012-09-11  Stephen Berman  <stephen.berman@gmx.net>

        Changes from 2009-02-12 (revision 109986).
        * calendar/todos.el: New file.  This is a copy of todo-mode.el
        from revision 94343 except for the following changes: replace all
        occurrences of the namespace prefix "todo-" with "todos-", delete
        the defvar todo-cats (the old name of todo-categories) and its use
        in todos-add-category, delete all defaliases of old command names.