#include <pcre2.h>

       int pcre2_substring_length_byname(pcre2_match_data *match_data,
         PCRE2_SPTR name, PCRE2_SIZE *length);


       This  function returns the length of a matched substring, identified by
       name.  The arguments are:

         match_data   The match data block for the match
         name         The substring name
         length       Where to return the length

       The yield is zero on success, or an error code if the substring is  not

       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 10.00                     21 October 201PCRE2_SUBSTRING_LENGTH_BYNAME(3)
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