С python
:
import re
str = 'Lorem <a href="random1.com">Ipsum</a> is simply <a href="random2.com">dummy</a> text of the <a href="random3.com">printing</a> and typesetting industry.'
print(re.sub(r'<a href=[^>]+>(?!dummy)(.*?)</a>', r'\1', str))
С perl
:
$_ = 'Lorem <a href="random1.com">Ipsum</a> is simply <a href="random2.com">dummy</a> text of the <a href="random3.com">printing</a> and typesetting industry.';
s#<a href=[^>]+>(?!dummy)(.*?)</a>#$1#g;
print "$_\n";
Результат:
Lorem Ipsum is simply <a href="random2.com">dummy</a> text of the printing and typesetting industry.