Full .nr nS support, unbreaking the kernel manuals.

Kristaps coded this from scratch after reading my .nr patch;
it is simpler and more powerful.

Registers live in struct regset in regs.h, struct man and struct mdoc
contain pointers to it.  The nS register is cleared when parsing .Sh.
Frontends respect the MDOC_SYNPRETTY flag set in mdoc node_alloc.

1 files changed, 16 insertions, 10 deletions

diff --git a/usr.bin/mandoc/libmdoc.h b/usr.bin/mandoc/libmdoc.h
index ceeedfd3f0d..b37489b9f2d 100644
--- a/usr.bin/mandoc/libmdoc.h
+++ b/usr.bin/mandoc/libmdoc.h
@@ -1,6 +1,6 @@
-/*	$Id: libmdoc.h,v 1.37 2010/06/06 20:30:08 schwarze Exp $ */
+/*	$Id: libmdoc.h,v 1.38 2010/06/27 21:54:41 schwarze Exp $ */
 /*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -17,6 +17,7 @@
 #ifndef LIBMDOC_H
 #define LIBMDOC_H
 
+#include "regs.h"
 #include "mdoc.h"
 
 enum	mdoc_next {
@@ -25,8 +26,8 @@ enum	mdoc_next {
 };
 
 struct	mdoc {
-	void		 *data;
-	mandocmsg	  msg;
+	void		 *data; /* private application data */
+	mandocmsg	  msg; /* message callback */
 	int		  flags;
 #define	MDOC_HALT	 (1 << 0) /* error in parse: halt */
 #define	MDOC_LITERAL	 (1 << 1) /* in a literal scope */
@@ -36,16 +37,21 @@ struct	mdoc {
 #define	MDOC_PPHRASE	 (1 << 5) /* within a partial phrase */
 #define	MDOC_FREECOL	 (1 << 6) /* `It' invocation should close */
 	int		  pflags;
-	enum mdoc_next	  next;
-	struct mdoc_node *last;
-	struct mdoc_node *first;
-	struct mdoc_meta  meta;
+	enum mdoc_next	  next; /* where to put the next node */
+	struct mdoc_node *last; /* the last node parsed */
+	struct mdoc_node *first; /* the first node parsed */
+	struct mdoc_meta  meta; /* document meta-data */
 	enum mdoc_sec	  lastnamed;
 	enum mdoc_sec	  lastsec;
+	struct regset	 *regs; /* registers */
 };
 
-#define	MACRO_PROT_ARGS	struct mdoc *m, enum mdoct tok, \
-			int line, int ppos, int *pos, char *buf
+#define	MACRO_PROT_ARGS	struct mdoc *m, \
+			enum mdoct tok, \
+			int line, \
+			int ppos, \
+			int *pos, \
+			char *buf
 
 struct	mdoc_macro {
 	int		(*fp)(MACRO_PROT_ARGS);