Re: Problem with org-toggle-timestamp-type

[Ben Alexander <bva@alexanderonline.org>]

I apologize if this is a repeat.  It's in my sent items, but I haven't  
seen it on the list yet. I edited the message bit, and added a bit more:
>
> Hi!
>
> I cannot figure out how to use version control in general, and git  
> in particular.  So I can't generate a proper patch. However, I think  
> there is a mistake with org-toggle-timestamp-type.
>
> Currently, the message always returns "Timestamp is now active"  
> regardless of whether it is or not.  I think this is because the  
> message is not inside the save-excursion block, so we can't be sure  
> whether point was outside the timestamp (just in front) or inside  
> (at the very end).  Inside save-excursion, I think it is always  
> moved to the end, does the edit, and is moved outside.
>
> Also, I think the sense of the test is backwards.  And for some  
> reason (if (equal (char-before) ?]) "in" "") didn't work (went to  
> elisp debugger). I can't read this much lisp, it's beyond me.
>
> So here's the change I made (to org-version 6.10c)
>
>
> (defun org-toggle-timestamp-type ()
>  "Toggle the type (<active> or [inactive]) of a time stamp."
>  (interactive)
>  (when (org-at-timestamp-p t)
>    (save-excursion
>      (goto-char (match-beginning 0))
>      (insert (if (equal (char-after) ?<) "[" "<")) (delete-char 1)
>      (goto-char (1- (match-end 0)))
>      (insert (if (equal (char-after) ?>) "]" ">")) (delete-char 1)
>      (message "Timestamp is now %sactive"
>             (if (equal (char-before) ?>) "" "in")))))
>
> There's something else, and this might very well because my git repo  
> is not what emacs is actually running, and my modified Makefile  
> install target might be foobar.
>
> If I have a timestamp that looks like <2009-01-29 Thu>--<2009-01-29  
> Thu> and the cursor is in front of the first > symbol and then I hit  
> the S-<up> twice, my timestamp no longer is a range.  It now looks  
> like [2009-01-30 Fri]
>
And if the cursor is in front of the the first < symbol and I hit the  
S-<up> key once (or if I use M-x org-toggle-timestamp-type), I get
[2009-01-29 Thu]--<2009-01-29 Thu>
but a second time, I get
<2009-01-29 Thu]--<2009-01-29 Thu]

That suggests to me that the regular expression isn't symmetric w.r.t.  
square brackets and curly brackets.  I kinda know perl regex, but am  
completely unfamiliar with elisp's version.

> I tried to look at the org-ts[r]?-regexp-* variables, but my eyes  
> crossed.  Plus, I'm very afraid that any change I'd make would add  
> parentheses, and thereby screwup every (match-begin 8) in the code.
>
> TFOM*
>
> Ben
>
> ----
> footnotes
> * TFOM = Thanks for Org-Mode
>
>