Description of Problem:

/usr/bin/lesspipe.sh includes the following lines:

		if echo "$1" | grep -q ^/; then	#absolute path
			man -- "$1" | cat -s
		else
			man -- "./$1" | cat -s
		fi

That would be not so bad in itself if not that small catch that 'man -- ...'
segfaults (see #73212).  Actually, regardless of bugs in man,

		if echo "$1" | grep -q ^/; then	#absolute path
			man "$1" | cat -s
		else
			man "./$1" | cat -s
		fi

does what was clearly intended here.

This bug was not introduced in (null) but seems to have pretty long history.
OTOH this line:

  *.tar.bz2|*.tbz2) bzip2 -dc "$1" | tar tvvf - ;;

from a (null) version of lesspipe.sh could likely benefit from

  *.tar.bz2|*.tbz2) bzip2 -dc -- "$1" | tar tvvf - ;;

or, alternatively, one can do
echo "$1" | grep -q ^/ && data="$1" || data="./$1"
at the very beginning of lesspipe() function and use "$data" instead of "$1"
consistently all over the place.  Then '--', and possible troubles caused by
it, will be not needed.