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|
# read a man page
setopt localoptions extendedglob
local manual="$1" col=col terminal=man magic line
# /usr/bin/col on SunOS 4 doesn't support -x.
if [[ -x /usr/5bin/col ]]; then
col=/usr/5bin/col;
fi
# SunOS 5 has no `man' terminal.
if [[ -d /usr/share/lib/nterm &&
! -e /usr/share/lib/nterm/tab.$terminal ]]; then
terminal=lp;
fi
# HP-UX has no `man' terminal.
if [[ -d /usr/share/lib/term &&
! -e /usr/share/lib/term/tab$terminal ]]; then
terminal=lp;
fi
# Unixware has no `man' terminal.
if [[ -d /usr/ucblib/doctools/nterm &&
! -e /usr/ucblib/doctools/nterm/tab.$terminal ]]; then
terminal=lp;
fi
# Solaris has SGML manuals.
if [[ -f /usr/lib/sgml/sgml2roff ]] &&
[[ "$(read -er < $manual)" = "<!DOCTYPE"* ]]; then
/usr/lib/sgml/sgml2roff $manual | {
read -r line
if [[ $line = ".so "* ]]; then
# There is no cascading .so directive.
# On Solaris 7, at least.
/usr/lib/sgml/sgml2roff ${line#.so }
else
print -lr - "$line"
cat
fi
}
else
read -u0 -k 2 magic < $manual
case $magic in
$'\037\235') zcat $manual;;
$'\037\213') gzip -dc $manual;;
*) cat $manual;;
esac
fi | (
# cd is required to work soelim called by nroff.
case $manual in
*/man/man*/*) cd ${manual:h:h};;
*/man/sman*/*) cd ${manual:h:h};;
esac
read -r line
# The first line beginning with '\" shows preprocessors.
# Unknown preprocessors is ignored.
if [[ $line = "'\\\" "* ]]; then
typeset -A filter
filter=(
e neqn
g grap
p pic
r refer
t tbl
v vgrind
)
eval ${(j:|:)${${(s::)line#\'\\\" }//(#m)?/$filter[$MATCH]}}
elif [[ $line = "'\\\"! "* ]]; then
typeset -A filter
filter=(
eqn neqn
)
eval ${(j:|:)${${${${(s:|:)line#\'\\\"! }# ##}% ##}//(#m)*/$filter[$MATCH]}}
else
print -lr - "$line"
cat
fi |
nroff -T$terminal -man | $col -x
) |
${MANPAGER:-${PAGER:-more}} -s
|
