Version 6.9.8 is available upstream. Please consider updating!
It seems that version 6.9.8 is available upstream, while the latest version in the Gentoo tree is 188.8.131.52. You think this warning is false? Read more about it here.
Oniguruma is a regular expression library. The characteristics of
this library is that different character encoding for every regular
expression object can be specified. (Supported character encodings:
ASCII, UTF-8, EUC-JP, Shift_JIS)