Sorry for the confusion,

I did try the empty regexp as suggested and it "worked" ie no problem
appeared.

My problem is to find a regexp for timestamps outside DEADLINE: and
SCHEDULE: rows

In other words, given three variables A B C with regexps.

If I have a regexp given by variable A and I want to find a text which
satisfies A but DO NOT satisfy B nor C how can I write uch regexp?

2009/1/13 Olaf Dietsche
<olaf+list.orgmode@olafdietsche.de<olaf%2Blist.orgmode@olafdietsche.de>
>

> "Daniel Martins" <danielemc@gmail.com> writes:
>
> > I did your test wuth a null regexp
> >
> > It is a regexp problem!
> >
> > Org-mode has two variables: org-deadline-string and org-scheduled-string
> > (see below)
> >
> > and I want to match tasks which have a timestamp, ie satisfies the
> > org-ts-regexp2
> >
> > BUT DO NOT  have org-deadline-string NOR org-scheduled-string
> >
> > I tried
> >
> >     (org2rem-pure-timestamps-string
> >           (concat  "\\(" org-deadline-string "\\|"
> >                org-scheduled-string  "\\)\\{0\\}"))
> >
> > in order that a regexp such as
> >
> > "\\(org-deadline-string\\|org-scheduled-string\\)\\{0\\}"
> >
> > would match only zero {0} occurrences of
> > (org-deadline-string|org-scheduled-string)
> > but this seems to be a mistake.
> >
> > Any hint??
>
> I can only suggest the empty regexp, as before:
>
>     (org2rem-pure-timestamps-string "")
>
> If this doesn't work, I don't know.
>
> Regards, Olaf
>