commit 7b6298d198c875c7d5036f0a8ad81c4a0ea194f9
Author: Ulrich Spörlein <uqs@spoerlein.net>
Date:   Mon May 24 16:50:14 2010 +0200

    mandoc: cut trailing OS string after first dash
    
    This is to mimick groff behaviour, where only "FreeBSD 8.0" is
    displayed in the footer.

diff --git a/contrib/mdocml/mdoc_action.c b/contrib/mdocml/mdoc_action.c
index f27ef13..ddd7cab 100644
--- a/contrib/mdocml/mdoc_action.c
+++ b/contrib/mdocml/mdoc_action.c
@@ -611,6 +611,8 @@ post_os(POST_ARGS)
 			mdoc_nmsg(m, n, MANDOCERR_MEM);
 			return(0);
 		}
+		if (strncmp(utsname.sysname, "FreeBSD", sizeof("FreeBSD")) == 0)
+			strtok(utsname.release, "-");
 		if (strlcat(buf, utsname.release, BUFSIZ) >= BUFSIZ) {
 			mdoc_nmsg(m, n, MANDOCERR_MEM);
 			return(0);