Converting PCRE to POSIX regular expression
The MySQL docs state that: MySQL uses Henry Spencer's implementation of regular expressions, which is aimed at conformance with POSIX 1003.2. MySQL uses the extended version to support pattern-matching operations performed with the REGEXP operator in SQL statements. Ok, so we're talking about POSIX ERE. This page lists the details...
Why is the following regex not working in C using regcomp
Anyway, regcomp uses POSIX BRE or ERE, which doesn't support look-ahead or look-behind. .+{(.+)} Grab the string you want from group index 1. DEMO...