===================================================================
RCS file: /cvs/mandoc/Attic/regs.h,v
retrieving revision 1.1
retrieving revision 1.5
diff -u -p -r1.1 -r1.5
--- mandoc/Attic/regs.h	2010/06/26 15:22:19	1.1
+++ mandoc/Attic/regs.h	2010/07/04 22:04:04	1.5
@@ -1,6 +1,7 @@
-/*	$Id: regs.h,v 1.1 2010/06/26 15:22:19 kristaps Exp $ */
+/*	$Id: regs.h,v 1.5 2010/07/04 22:04:04 schwarze Exp $ */
 /*
  * Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -24,15 +25,27 @@ enum	regs {
 	REG__MAX
 };
 
+struct	reg {
+	int		 set; /* whether set or not */
+	union {
+		unsigned u; /* unsigned integer */
+	} v;
+};
+
 /*
- * Registers are passed into libmdoc and libman.  They refer to some
- * sort of external state.
+ * Registers are non-scoped state.  These can be manipulated directly in
+ * libroff or indirectly in libman or libmdoc by macros.  These should
+ * be implemented sparingly (we are NOT roffdoc!) and documented fully
+ * in roff.7.
  */
 struct	regset {
-	union {
-		int	 i; /* integer value */
-	} regs[REG__MAX];
+	struct reg	 regs[REG__MAX];
 };
+
+char		 *roff_setstr(const char *, const char *);
+char		 *roff_getstr(const char *);
+char		 *roff_getstrn(const char *, size_t);
+void		  roff_freestr(void);
 
 __END_DECLS