Re: Matching literal dot in To

On 14.06.15 08:30, Chuck Martin wrote:
> On Sun, Jun 14, 2015 at 07:38:30PM +1000, Erik Christiansen wrote:
> > We need another tweak. This will be a great deal closer:
> > 
> >    * ^TO_.*\<[^.@ ]+\.[^.@ ]+@
> > 
> > That will not leap to the end of a mismatched address, but slide off it
> > in stages, because '\<' is only shorthand for `[^a-zA-Z0-9_]'. But we
> > needn't fuss over a lost microsecond here or there. It should do the job
> > now.
> 
> That will miss an address like [email protected].

That is not within the stated parameters. The stated goal is to detect
xxx.yyy@zzz But even if we assume that you have imagined a real need,
that does not mean that your "It may be necessary" is in any way
required.

Since '\<' is only shorthand for `[^a-zA-Z0-9_]', it is only necessary
to substitute the negative character class for the shorthand, and extend
it to [^a-zA-Z0-9_+].

Whether that is considered worth doing, we can but ask.

Erik

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