I've second Sven here. In case anybody wants the old method put it in some ANSICompatibility package to ease porting packages from ANSI-compliant Smalltalks.

On Thu, Sep 3, 2015 at 4:54 PM, Sven Van Caekenberghe <sven@stfx.eu> wrote:

We went through a lot of effort/pain to move to substring, I think for good reasons.

> On 03 Sep 2015, at 21:31, Dimitris Chloupis <kilon.alios@gmail.com> wrote:
>
> why not both ?

Because the proper English spelling is with lowercase

https://duckduckgo.com/?q=define%3A+substring&ia=definition

> On Thu, Sep 3, 2015 at 9:45 PM stepharo <stepharo@free.fr> wrote:
> *) It appears that Pharo is removing subString: in favor of
> substring:. The ANSI standard defines subString:.
>
>      I was not aware of it. In fact ANSI is bad and totally incomplete
>      (for example we studies strings and this is a mess and totally
>      incomplete).
>      Now we should probably add it. I will send the mail to the
>      mailing-list and let people decide.
>
>
>
>