PCRE2 - Perl-compatible regular expressions (revised API) .rs #include <pcre2.h>

 int pcre2_set_parens_nest_limit(pcre2_compile_context *ccontext,  " uint32_t value);" 

. .rs This function sets, in a compile context, the maximum depth of nested parentheses in a pattern. The result is always zero.

There is a complete description of the PCRE2 native API in the HREF
pcre2api
page and a description of the POSIX API in the HREF
pcre2posix
page.