his function.
</P>
<P>
An alternative algorithm is provided by the <b>pcre2_dfa_match()</b> function;
it operates in a different way, and is not Perl-compatible. This alternative
has advantages and disadvantages compared with the standard algorithm, and
these are described below.
</P>
<P>
When there is only one possible way in which a given subject string can match a
pattern, the two algorithms give the same answer. A difference arises, however,
when there are multiple possibilities. For example, if the anc