Hi, All! pcretest.exe listing:
PCRE version 8.33-RC1 2012-12-07 /(*:m(m)(?&y)(?(DEFINE)(?<y>b))/ Compile time 0.0030 millisecondsFailed: internal error: previously-checked referenced subpattern not found at offset 30
If there is no open bracket in MARK verb then there is no error. Thanx --## List details at https://lists.exim.org/mailman/listinfo/pcre-dev
