Good day! Here is 2 pcre2test listings:
PCRE2 version 10.33 2019-04-16 /(?<=(?=.(?<=x)))/ ab\=ph Partial match: b /(?<=.(?=x))/ ab\=ph Partial match: b < Isn't both results should be "no match" instead of "partial match"? Thanks. --## List details at https://lists.exim.org/mailman/listinfo/pcre-dev