PCRE2 - Perl-compatible regular expressions (revised API)

This function sets the convention for processing \R within a compile context. The second argument must be one of PCRE2_BSR_ANYCRLF or PCRE2_BSR_UNICODE. The result is zero for success or PCRE2_ERROR_BADDATA if the second argument is invalid. There is a complete description of the PCRE2 native API in the pcre2api page and a description of the POSIX API in the pcre2posix page. PCRE2 10.45 25 October 2014 PCRE2_SET_BSR(3)

PCRE2 - Perl-compatible regular expressions (revised API)