squid3_ldap_group(8) on Linux
The text 256fb13c9229, as Debian 4.0 (Etch) shipped it.
Squid LDAP external acl group helper
Flags it lists
-
-B -
-D -
-E -
-F -
-P -
-R -
-S -
-W -
-Z -
-a -
-c -
-d -
-f -
-g -
-s -
-t -
-u -
-w