2:57 >perl -wE "my $s = '}abc{def}'; say 'match' if $s =~ /}.*(?!{)}/;"
match

 2:59 >

##</code><code>##

 2:59 >perl -wE "my $s = '}abc{def}'; say 'match' if $s =~ /}.*?(?!{)}/;"
match

 2:59 >

##</code><code>##

 3:31 >perl -wE "my $s = '}abc{def}'; say 'match' if $s =~ /}[^{]*?}/;"

 3:31 >perl -wE "my $s = '}abc|def}'; say 'match' if $s =~ /}[^{]*?}/;"
match

 3:31 >