[tin-users] Help for filtering regex

[Dennis Preiser]

On Sun, Oct 22, 2017 at 02:52:52PM +0200, Joe wrote:
> Anyway, just for curiosity, where this information (I mean tin
> filtering regex are in pcre style) is "formally" written? I couldn't
> find it on the man pages nor at the site docs...

It can be found in the man page (tin(1)) under 'Wildcard matching':

|        Wildcard matching (wildcard)
|            Allows you to select how tin matches strings. The default is
|            0  and  uses  the wildmat  notation,  which  is how this has
|            traditionally been handled.  Setting this to 1 allows you to
|            use perl(1) compatible regular expressions pcre(3) (see also
|            perlre(1) and pcrepattern(3)).  You will probably want to
|            update your filter file if you use this regularly.  NB:
|            Newsgroup names will always be matched using the wildmat
|            notation.

and in tin(5) under 'wildcard'.

Dennis