man pager

man.bash

function man {
	if ! command man -W "$@"; then
		return 1
	elif [[ ! -t 0 ]]; then
		echo 'STDIN must be a tty.' >&2
		return 1
	elif [[ $- != *m* ]]; then
		set -m
		typeset -f +t "$FUNCNAME"
		trap 'trap RETURN; set +m' RETURN
	fi

	{
		{
			groffer --text -Tutf8 -rLL=$((${COLUMNS:-$(tput cols)}-10))n -man "$@" 2>/dev/null ||
				kill -"$BASHPID"
		} | sed -e 's/\x1B\[[[:digit:]]\+m//g' |
		vim -c 'set nomod ft=man' --servername manpages --remote -- /dev/fd/4 4<&0 <&3
	} 3<&0
}