Re: [PATCH] Cleanup git-send-email.perl:extract_valid_email

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Eric Wong <normalperson@xxxxxxxx> wrote:
> "Horst H. von Brand" <vonbrand@xxxxxxxxxxxx> wrote:
> > - Fix the regular expressions for local addresses
> > - Fix the fallback regexp for non-local addresses, simplify the logic
> > 
> > Signed-off-by: Horst H. von Brand <vonbrand@xxxxxxxxxxxx>
> > ---
> >  git-send-email.perl |    9 +++------
> >  1 files changed, 3 insertions(+), 6 deletions(-)
> > 
> > diff --git a/git-send-email.perl b/git-send-email.perl
> > index ed1d89b..a7a7797 100755
> > --- a/git-send-email.perl
> > +++ b/git-send-email.perl
> > @@ -314,18 +314,15 @@ sub extract_valid_address {
> >  	my $address = shift;
> >  
> >  	# check for a local address:
> > -	return $address if ($address =~ /^([\w\-]+)$/);
> > +	return $address if ($address =~ /^([\w\-.]+)$/);
> 
> I keep forgetting this, '+' is a valid (and useful) setup, too.

Oops...

> >  	if ($have_email_valid) {
> >  		return Email::Valid->address($address);
> >  	} else {
> >  		# less robust/correct than the monster regexp in Email::Valid,
> >  		# but still does a 99% job, and one less dependency
> > -		my $cleaned_address;
> > -		if ($address =~ /([^\"<>\s]+@[^<>\s]+)/) {
> > -			$cleaned_address = $1;
> > -		}
> > -		return $cleaned_address;
> > +		$address =~ /([\w\-.]+@[\w\-.]+)/;
> > +		return $1;
> 
> Actually, I'm retracting my earlier ack on this.  This is way too
> restrictive.  I'd rather allow an occasional invalid email address than
> to reject valid ones.  I generally trust git users to know what they're
> doing when entering email addresses[1].
> 
> *, $, ^, +, = are all valid characters in the username portion (not sure
> about local accounts, though), and I'm sure there are more that I don't
> know about.

As a general principle, I prefer to check what is legal instead of trying
to filter out what isn't.
-- 
Dr. Horst H. von Brand                   User #22616 counter.li.org
Departamento de Informatica                     Fono: +56 32 654431
Universidad Tecnica Federico Santa Maria              +56 32 654239
Casilla 110-V, Valparaiso, Chile                Fax:  +56 32 797513
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