icalendar--datetime-to-iso-date (icalendar.el)

icalendar--datetime-to-iso-date (icalendar.el)

[HASM]

Shouldn't format in:
  icalendar--datetime-to-iso-date (icalendar.el)
be:
  "%04d%s%02d%s%02d"
instead of:
  "%d%s%d%s%d"?

At least that's how I read the wikipedia description of the standard:
  https://en.wikipedia.org/wiki/ISO_8601

This will allow, for those of use ISO dates with:
  (setq
   diary-date-forms    diary-iso-date-forms
   calendar-date-style 'iso
   )
 
To create a "simple' sort function for the diary, like the one below.

-- HASM

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

(defun sort--diary (diary-filename)
  (with-current-buffer
    (set-buffer (find-file-noselect (expand-file-name diary-filename)))
    (goto-char (point-min))
    (while (search-forward "\C-j " nil t)
      (replace-match "^j "))
    (sort-lines nil (point-min) (point-max))
    (goto-char (point-min))
    (while (search-forward "^j" nil t)
      (replace-match "\C-j"))
    (save-buffer)))

(defvar sort--diary-filename (expand-file-name diary-file)
  "History for sort--diary diary-filename")

(defun sort-diary (diary-filename)
  "Sort diary file.  Requires dates to use ISO standard"
  (interactive (list (read-from-minibuffer
                      "diary file name: "
                      (car sort--diary-filename)
                      nil nil 'sort--diary-filename)))
  (sort--diary diary-filename))
  

Re: icalendar--datetime-to-iso-date (icalendar.el)

[tomas]

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On Thu, Nov 03, 2016 at 06:27:00AM -0700, HASM wrote:
> 
> Shouldn't format in:
>   icalendar--datetime-to-iso-date (icalendar.el)
> be:
>   "%04d%s%02d%s%02d"
> instead of:
>   "%d%s%d%s%d"?

That seems to make sense. After all, an ISO date looks like
"2016-08-09" and not "2016-8-9".

Consider reporting a bug with M-x report-emacs-bug.

Regards
- -- tomás
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Re: icalendar--datetime-to-iso-date (icalendar.el)

[Yuri Khan]

On Fri, Nov 4, 2016 at 3:30 PM,  <tomas@tuxteam.de> wrote:

>> Shouldn't format in:
>>   icalendar--datetime-to-iso-date (icalendar.el)
>> be:
>>   "%04d%s%02d%s%02d"
>> instead of:
>>   "%d%s%d%s%d"?
>
> That seems to make sense. After all, an ISO date looks like
> "2016-08-09" and not "2016-8-9".
>
> Consider reporting a bug with M-x report-emacs-bug.

Consider also that the only valid date separators are the empty string
and the hyphen-minus character, while the function in question uses
the space by default.