`man` replacement for git bash on windows

man.sh

#!/bin/bash

# man.sh - `man` replacement for git bash on windows

BASEDIR=$(realpath "${0%/*}")
TEMPDIR=${TMP}
if [[ -z ${TEMPDIR} ]]; then
    TEMPDIR=${BASEDIR}
fi

if [[ $# -eq 0 ]]; then
    echo "No command specified to get man page for"
    exit 1
fi

url="http://man.he.net/?section=all&topic="

#  The extra `+` at the end of the querystring doesn't hurt 
for arg in $@ ; do
    url=$url$arg"+"
done

temp=$(mktemp "${TEMPDIR}/man.XXXXXXXX.tmp") &&
curl -s $url | sed -n '/<PRE>/,/<\/PRE>/p' | sed 's/<[^>]*>//g' | perl -MHTML::Entities -pe 'decode_entities($_);' > "${temp}"

if [[ ! -f ${temp} || $(wc -c < "${temp}") -eq 0 ]]; then
    ret=1
    echo >&2 "No manual entry for $@"
else
    ret=0
    less < "${temp}"
fi

if [[ -f ${temp} ]]; then
    rm "${temp}"
fi

exit "${ret}"

Add search result check to return error code if no output.