PCRE2 - Perl-compatible regular expressions (revised API)
#include <pcre2.h>
PCRE2_SPTR pcre2_get_mark(pcre2_match_data *match_data);
After a call of pcre2_match() that was passed the match block that is
this function's argument, this function returns a pointer to the last (*MARK),
(*PRUNE), or (*THEN) name that was encountered during the matching process.
The name is zero-terminated, and is within the compiled pattern. The length of
the name is in the preceding code unit. If no name is available, NULL is
returned.
After a successful match, the name that is returned is the last
one on the matching path. After a failed match or a partial match, the last
encountered name is returned.
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.