Change the -s option from "display charset Shift_JIS" to "squeeze multiple
blank lines" to work as /usr/bin/pager. In addition, the options -j and -e
are disabled. To specify the display charset, use -O{s|j|e} instead.
The patch was committed to the upstream on 2000-10-27. However, it was
rejected because of Debian specific on 2010-08-03.
Patch from upstream, [w3m-dev 04411] on 2010-09-17, to support the
button element. It is discussed upstream and incomplete, but enough
to login Launchpad.