On Tue, Apr 1, 2025 at 6:15 AM Marcos Pegoraro <marcos@f10.com.br> wrote:

Em ter., 1 de abr. de 2025 às 02:00, David G. Johnston <david.g.johnston@gmail.com> escreveu:

Wouldn't it be good to add the use of parentheses using posix ? It's useful and rarely documented
<literal>substring('Thomas', '...$')</literal>
+ <literal>substring('Email: johnjohn@mymail.com, Name: John' from '@(.*), Name')</literal>

Agreed. A second example using () would be good here.

Was pondering explaining the "no parentheses" case here; but for someone familiar with PREs the behavior is obvious and everyone else has the link needed to learn what is happening.

David J.