Created attachment 221073 [details] git(1) diff against the ports tree libgnuregex has been removed in -CURRENT. Switch to using the newer version that's provided in ports as of ports r559542, so that colortail uses GNU-extended expressions rather than pure POSIX expressions provided by libc.
A commit references this bug: Author: sunpoet Date: Sun Jan 3 20:30:03 UTC 2021 New revision: 560243 URL: https://svnweb.freebsd.org/changeset/ports/560243 Log: Use libgnuregex from ports tree instead of base system - Bump PORTREVISION for dependency change libgnuregex has been removed from -CURRENT. PR: 252254 Submitted by: kevans Changes: head/misc/colortail/Makefile
Committed. Thanks!