[rt-users] Regular expressions (Perl regex) for validation

Gaston Huot Gaston at huot.me
Wed Oct 1 09:20:57 EDT 2014


For those who have the same question (or similar), Marc provided the
correct answer in my context: ^(|\d{2})$

Thank you Marc

GH

2014-09-30 10:13 GMT-04:00 Marc Chantreux <mc at unistra.fr>:

> On Tue, Sep 30, 2014 at 09:18:37AM -0400, Gaston Huot wrote:
> > In this custom field, the user has to enter:
> >   -either nothing
> >   -either a number of exactly 2 digits
>
> if you use the x modifier:
>
>
>     (
>         # Nothing
>     |
>         \d{2} # two digits
>     )
>
> the old school one is
>
>     (|\d{2})
>
> HTH
>
> --
> Marc Chantreux,
> Mes coordonnées: http://annuaire.unistra.fr/chercher?n=chantreux
> Direction Informatique, Université de Strasbourg (http://unistra.fr)
> Service Métiers, Pôle Outils Collaboratifs
> "Don't believe everything you read on the Internet"
>     -- Abraham Lincoln
>



-- 
Gaston
514.823-7202
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