install Zsh On-Line Help

install-zsh-online-help.zsh

# -*- shell-script -*-

# For more information, see the following URL.
# http://zsh.sourceforge.net/Doc/Release/User-Contributions.html#Accessing-On_002dLine-Help

HELPDIR=~/.zsh_help

function init-help () {
    [ -n "`alias run-help`" ] && unalias run-help
    autoload run-help
}

function install-zsh-online-help () {
    PREVIOUS_DIR=`pwd`
    mkdir -p $HELPDIR
    cd $HELPDIR
    wget http://sourceforge.net/projects/zsh/files/zsh/$ZSH_VERSION/zsh-$ZSH_VERSION.tar.gz
    tar xf zsh-$ZSH_VERSION.tar.gz
    command rm zsh-$ZSH_VERSION.tar.gz
    man zshall | colcrt - | perl zsh-$ZSH_VERSION/Util/helpfiles
    command rm -r zsh-$ZSH_VERSION
    init-help
    cd $PREVIOUS_DIR
}