===================================================================
RCS file: /cvs/docbook2mdoc/macro.c,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -p -r1.11 -r1.12
--- docbook2mdoc/macro.c	2019/04/12 09:01:48	1.11
+++ docbook2mdoc/macro.c	2019/04/14 12:59:15	1.12
@@ -1,4 +1,4 @@
-/* $Id: macro.c,v 1.11 2019/04/12 09:01:48 schwarze Exp $ */
+/* $Id: macro.c,v 1.12 2019/04/14 12:59:15 schwarze Exp $ */
 /*
  * Copyright (c) 2019 Ingo Schwarze <schwarze@openbsd.org>
  *
@@ -112,13 +112,16 @@ macro_addarg(struct format *f, const char *arg, int fl
 
 		/* Escape us if we look like a macro. */
 
-		if ((flags & ARG_QUOTED) == 0 &&
+		if ((flags & (ARG_QUOTED | ARG_UPPER)) == 0 &&
 		    (cp == arg || isspace((unsigned char)cp[-1])) &&
 		    isupper((unsigned char)cp[0]) &&
 		    islower((unsigned char)cp[1]) &&
 		    (cp[2] == '\0' || cp[2] == ' ' ||
-		     (islower((unsigned char)cp[2]) &&
-		      (cp[3] == '\0' || cp[3] == ' '))))
+		     ((cp[3] == '\0' || cp[3] == ' ') &&
+		      (strncmp(cp, "Brq", 3) == 0 ||
+		       strncmp(cp, "Bro", 3) == 0 ||
+		       strncmp(cp, "Brc", 3) == 0 ||
+		       strncmp(cp, "Bsx", 3) == 0))))
 			fputs("\\&", stdout);
 
 		if (*cp == '"')