Pcre2 named capture. Oct 16, 2024 · The J modifier allows a named group to be defined several times in a same pattern. This document contains a quick-reference summary of the pattern syntax followed by the This page is part of the PCRE2 HTML documentation. Sep 12, 2025 · Adding a named capturing group to an existing regex still upsets the numbers of the unnamed groups. See a sample regex demo. In PCRE2, POSIX character set names recognize only ASCII characters by default, but some of them use Unicode properties if PCRE2_UCP is set. Named capture groups are a standout feature; they not only make capturing more intuitive but also facilitate backreferences in procedural contexts where numbered groups fall short. In PCRE you have to explicitly enable it by using the (?J) modifier (PCRE_DUPNAMES), or by using the branch reset group (?|). This compilation allows it to handle complex patterns with ease. Note I would not call it anonymous, maybe, "unnamed" would suit better here. NET, however, unnamed capturing groups are assigned numbers first, counting their opening parentheses from left to right, skipping all named groups. ivsf11 qkgnm pxxvb rpx wpkl ru ap wkj7 p9k4 hp9cf