===================================================================
RCS file: /cvs/mandoc/Attic/mdoc_action.c,v
retrieving revision 1.41
retrieving revision 1.43
diff -u -p -r1.41 -r1.43
--- mandoc/Attic/mdoc_action.c	2009/09/25 13:03:25	1.41
+++ mandoc/Attic/mdoc_action.c	2009/10/24 05:52:13	1.43
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_action.c,v 1.41 2009/09/25 13:03:25 kristaps Exp $ */
+/*	$Id: mdoc_action.c,v 1.43 2009/10/24 05:52:13 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -186,6 +186,7 @@ static	const struct actions mdoc_actions[MDOC_MAX] = {
 	{ NULL, NULL }, /* %Q */
 	{ NULL, NULL }, /* br */
 	{ NULL, NULL }, /* sp */
+	{ NULL, NULL }, /* %U */
 };
 
 #define	RSORD_MAX 13
@@ -520,8 +521,16 @@ static int
 post_os(POST_ARGS)
 {
 	char		  buf[64];
+#ifndef	OSNAME
 	struct utsname	  utsname;
+#endif
 
+	/*
+	 * Setting OSNAME to be the name of the target operating system,
+	 * e.g., "OpenBSD 4.4", will result in the compile-time constant
+	 * by supplied instead of the value in uname().
+	 */
+
 	if (m->meta.os)
 		free(m->meta.os);
 
@@ -530,6 +539,10 @@ post_os(POST_ARGS)
 		return(0);
 
 	if (0 == buf[0]) {
+#ifdef	OSNAME
+		if (strlcat(buf, OSNAME, 64) >= 64)
+			return(mdoc_nerr(m, n, EUTSNAME));
+#else
 		if (-1 == uname(&utsname))
 			return(mdoc_nerr(m, n, EUTSNAME));
 		if (strlcat(buf, utsname.sysname, 64) >= 64)
@@ -538,6 +551,7 @@ post_os(POST_ARGS)
 			return(mdoc_nerr(m, n, ETOOLONG));
 		if (strlcat(buf, utsname.release, 64) >= 64)
 			return(mdoc_nerr(m, n, ETOOLONG));
+#endif
 	}
 
 	if (NULL == (m->meta.os = strdup(buf)))