===================================================================
RCS file: /cvs/mandoc/read.c,v
retrieving revision 1.15
retrieving revision 1.22
diff -u -p -r1.15 -r1.22
--- mandoc/read.c	2011/05/26 20:36:21	1.15
+++ mandoc/read.c	2011/07/22 14:55:07	1.22
@@ -1,4 +1,4 @@
-/*	$Id: read.c,v 1.15 2011/05/26 20:36:21 kristaps Exp $ */
+/*	$Id: read.c,v 1.22 2011/07/22 14:55:07 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -59,7 +59,6 @@ struct	mparse {
 	struct man	 *man; /* man parser */
 	struct mdoc	 *mdoc; /* mdoc parser */
 	struct roff	 *roff; /* roff parser (!NULL) */
-	struct regset	  regs; /* roff registers */
 	int		  reparse_count; /* finite interp. stack */
 	mandocmsg	  mmsg; /* warning/error message handler */
 	void		 *arg; /* argument to mmsg */
@@ -146,9 +145,20 @@ static	const char * const	mandocerrs[MANDOCERR_MAX] = 
 	"bad comment style",
 	"bad escape sequence",
 	"unterminated quoted string",
+
+	/* related to equations */
+	"unexpected literal in equation",
 	
 	"generic error",
 
+	/* related to equations */
+	"too many nested equation defines",
+	"unexpected equation scope closure",
+	"equation scope open on exit",
+	"overlapping equation scopes",
+	"unexpected end of equation",
+	"equation syntax error",
+
 	/* related to tables */
 	"bad table syntax",
 	"bad table option",
@@ -237,13 +247,13 @@ pset(const char *buf, int pos, struct mparse *curp)
 	switch (curp->inttype) {
 	case (MPARSE_MDOC):
 		if (NULL == curp->pmdoc) 
-			curp->pmdoc = mdoc_alloc(&curp->regs, curp);
+			curp->pmdoc = mdoc_alloc(curp->roff, curp);
 		assert(curp->pmdoc);
 		curp->mdoc = curp->pmdoc;
 		return;
 	case (MPARSE_MAN):
 		if (NULL == curp->pman) 
-			curp->pman = man_alloc(&curp->regs, curp);
+			curp->pman = man_alloc(curp->roff, curp);
 		assert(curp->pman);
 		curp->man = curp->pman;
 		return;
@@ -253,14 +263,14 @@ pset(const char *buf, int pos, struct mparse *curp)
 
 	if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3))  {
 		if (NULL == curp->pmdoc) 
-			curp->pmdoc = mdoc_alloc(&curp->regs, curp);
+			curp->pmdoc = mdoc_alloc(curp->roff, curp);
 		assert(curp->pmdoc);
 		curp->mdoc = curp->pmdoc;
 		return;
 	} 
 
 	if (NULL == curp->pman) 
-		curp->pman = man_alloc(&curp->regs, curp);
+		curp->pman = man_alloc(curp->roff, curp);
 	assert(curp->pman);
 	curp->man = curp->pman;
 }
@@ -681,15 +691,13 @@ mparse_alloc(enum mparset inttype, enum mandoclevel wl
 	curp->arg = arg;
 	curp->inttype = inttype;
 
-	curp->roff = roff_alloc(&curp->regs, curp);
+	curp->roff = roff_alloc(curp);
 	return(curp);
 }
 
 void
 mparse_reset(struct mparse *curp)
 {
-
-	memset(&curp->regs, 0, sizeof(struct regset));
 
 	roff_reset(curp->roff);