src/Handler.php
public function setHelpOptionShort($str) {
        if (!Option::validateShort($str)) {
            throw new ConfigException('short help option must be a single character');
        }
        $this->helpShort = $str;
        return $this;
    }
public function setHelpOptionShort($str) {
        if (!Option::validateShort($str)) {
            throw new ConfigException('short help option must be a single character');
        }
        $this->helpShort = $str;
        return $this;
    }
public function setHelpOptionShort ( $ str ) { if ( ! Option :: validateShort ( $ str ) ) { throw new ConfigException ( 'short help option must be a single character' ) ; } $ this -> helpShort = $ str ; return $ this ; }
set the short option for help handling

@param string $str
@return $this
set the short option for help handling