4 ms·
is that just because they don't support the features which can be used to make pathological regexes in other engines? or they have additional sanitisation or s
by anentropic 9y ago
is that just because they don't support the features which can be used to make pathological regexes in other engines?
or they have additional sanitisation or security features?
- glangdale 9y agoNeither. There are regexes that can be written in the common subset supported by (say) libpcre, RE2 and Hyperscan that will induce exponential backtracking with libpcre but not with the other libraries. I'm not aware of any difference in terms of sanitisation or security.