can linelog log passwords?

Hello, I know that the log section of radiusd.conf allows to log passwords, by setting auth_badpass and auth_goodpass to "yes" or"no". But what I need is to log passwords only using the linelog module. More precisely, I'd like to keep auth_badpass = no auth_goodpass =yes destination = syslog in the log section of radiusd.conf and occasionally activate password logging on a local file via linelog for debugging purposes (and not have password be sent to syslog). Is this possible? If not with linelog, is there another way to keep on logging via syslog, while logging only password to a file? Thanks in advance, Stefano