===================================================================
RCS file: /cvs/mandoc/eqn.c,v
retrieving revision 1.31
retrieving revision 1.35
diff -u -p -r1.31 -r1.35
--- mandoc/eqn.c	2011/07/23 09:47:25	1.31
+++ mandoc/eqn.c	2011/07/23 13:31:03	1.35
@@ -1,4 +1,4 @@
-/*	$Id: eqn.c,v 1.31 2011/07/23 09:47:25 kristaps Exp $ */
+/*	$Id: eqn.c,v 1.35 2011/07/23 13:31:03 kristaps Exp $ */
 /*
  * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -128,6 +128,10 @@ enum	eqnpartt {
 	EQN_UNDEF,
 	EQN_GFONT,
 	EQN_GSIZE,
+	EQN_BACK,
+	EQN_FWD,
+	EQN_UP,
+	EQN_DOWN,
 	EQN__MAX
 };
 
@@ -140,10 +144,12 @@ static	struct eqn_def	*eqn_def_find(struct eqn_node *,
 static	int		 eqn_do_gfont(struct eqn_node *);
 static	int		 eqn_do_gsize(struct eqn_node *);
 static	int		 eqn_do_define(struct eqn_node *);
-static	int		 eqn_do_set(struct eqn_node *);
+static	int		 eqn_do_ign1(struct eqn_node *);
+static	int		 eqn_do_ign2(struct eqn_node *);
 static	int		 eqn_do_undef(struct eqn_node *);
 static	enum eqn_rest	 eqn_eqn(struct eqn_node *, struct eqn_box *);
 static	enum eqn_rest	 eqn_list(struct eqn_node *, struct eqn_box *);
+static	enum eqn_rest	 eqn_matrix(struct eqn_node *, struct eqn_box *);
 static	const char	*eqn_nexttok(struct eqn_node *, size_t *);
 static	const char	*eqn_nextrawtok(struct eqn_node *, size_t *);
 static	const char	*eqn_next(struct eqn_node *, 
@@ -152,10 +158,14 @@ static	void		 eqn_rewind(struct eqn_node *);
 
 static	const struct eqnpart eqnparts[EQN__MAX] = {
 	{ { "define", 6 }, eqn_do_define }, /* EQN_DEFINE */
-	{ { "set", 3 }, eqn_do_set }, /* EQN_SET */
+	{ { "set", 3 }, eqn_do_ign2 }, /* EQN_SET */
 	{ { "undef", 5 }, eqn_do_undef }, /* EQN_UNDEF */
 	{ { "gfont", 5 }, eqn_do_gfont }, /* EQN_GFONT */
 	{ { "gsize", 5 }, eqn_do_gsize }, /* EQN_GSIZE */
+	{ { "back", 4 }, eqn_do_ign1 }, /* EQN_BACK */
+	{ { "fwd", 3 }, eqn_do_ign1 }, /* EQN_FWD */
+	{ { "up", 2 }, eqn_do_ign1 }, /* EQN_UP */
+	{ { "down", 4 }, eqn_do_ign1 }, /* EQN_DOWN */
 };
 
 static	const struct eqnstr eqnmarks[EQNMARK__MAX] = {
@@ -174,6 +184,7 @@ static	const struct eqnstr eqnfonts[EQNFONT__MAX] = {
 	{ "", 0 }, /* EQNFONT_NONE */
 	{ "roman", 5 }, /* EQNFONT_ROMAN */
 	{ "bold", 4 }, /* EQNFONT_BOLD */
+	{ "fat", 3 }, /* EQNFONT_FAT */
 	{ "italic", 6 }, /* EQNFONT_ITALIC */
 };
 
@@ -191,6 +202,9 @@ static	const struct eqnstr eqnpiles[EQNPILE__MAX] = {
 	{ "cpile", 5 }, /* EQNPILE_CPILE */
 	{ "rpile", 5 }, /* EQNPILE_RPILE */
 	{ "lpile", 5 }, /* EQNPILE_LPILE */
+	{ "ccol", 4 }, /* EQNPILE_CCOL */
+	{ "rcol", 4 }, /* EQNPILE_RCOL */
+	{ "lcol", 4 }, /* EQNPILE_LCOL */
 };
 
 static	const struct eqnsym eqnsyms[EQNSYM__MAX] = {
@@ -271,9 +285,15 @@ eqn_read(struct eqn_node **epp, int ln, 
 	 * validate the full equation.
 	 */
 
-	if (0 == strcmp(p, ".EN")) {
+	if (0 == strncmp(p, ".EN", 3)) {
 		er = eqn_end(ep);
 		*epp = NULL;
+		p += 3;
+		while (' ' == *p || '\t' == *p)
+			p++;
+		if ('\0' == *p) 
+			return(er);
+		mandoc_msg(MANDOCERR_ARGSLOST, ep->parse, ln, pos, NULL);
 		return(er);
 	}
 
@@ -348,6 +368,55 @@ eqn_eqn(struct eqn_node *ep, struct eqn_box *last)
 }
 
 static enum eqn_rest
+eqn_matrix(struct eqn_node *ep, struct eqn_box *last)
+{
+	struct eqn_box	*bp;
+	const char	*start;
+	size_t		 sz;
+	enum eqn_rest	 c;
+
+	bp = eqn_box_alloc(ep, last);
+	bp->type = EQN_MATRIX;
+
+	if (NULL == (start = eqn_nexttok(ep, &sz))) {
+		EQN_MSG(MANDOCERR_EQNEOF, ep);
+		return(EQN_ERR);
+	}
+	if ( ! STRNEQ(start, sz, "{", 1)) {
+		EQN_MSG(MANDOCERR_EQNSYNT, ep);
+		return(EQN_ERR);
+	}
+
+	while (EQN_OK == (c = eqn_box(ep, bp)))
+		switch (bp->last->pile) {
+		case (EQNPILE_LCOL):
+			/* FALLTHROUGH */
+		case (EQNPILE_CCOL):
+			/* FALLTHROUGH */
+		case (EQNPILE_RCOL):
+			continue;
+		default:
+			EQN_MSG(MANDOCERR_EQNSYNT, ep);
+			return(EQN_ERR);
+		};
+
+	if (EQN_DESCOPE != c) {
+		if (EQN_EOF == c)
+			EQN_MSG(MANDOCERR_EQNEOF, ep);
+		return(EQN_ERR);
+	}
+
+	eqn_rewind(ep);
+	start = eqn_nexttok(ep, &sz);
+	assert(start);
+	if (STRNEQ(start, sz, "}", 1))
+		return(EQN_OK);
+
+	EQN_MSG(MANDOCERR_EQNBADSCOPE, ep);
+	return(EQN_ERR);
+}
+
+static enum eqn_rest
 eqn_list(struct eqn_node *ep, struct eqn_box *last)
 {
 	struct eqn_box	*bp;
@@ -373,7 +442,6 @@ eqn_list(struct eqn_node *ep, struct eqn_box *last)
 		assert(start);
 		if ( ! STRNEQ(start, sz, "above", 5))
 			break;
-		bp->last->above = 1;
 	}
 
 	if (EQN_DESCOPE != c) {
@@ -412,6 +480,10 @@ eqn_box(struct eqn_node *ep, struct eqn_box *last)
 		return(EQN_DESCOPE);
 	else if (STRNEQ(start, sz, "above", 5))
 		return(EQN_DESCOPE);
+	else if (STRNEQ(start, sz, "mark", 4))
+		return(EQN_OK);
+	else if (STRNEQ(start, sz, "lineup", 6))
+		return(EQN_OK);
 
 	for (i = 0; i < (int)EQN__MAX; i++) {
 		if ( ! EQNSTREQ(&eqnparts[i].str, start, sz))
@@ -442,6 +514,9 @@ eqn_box(struct eqn_node *ep, struct eqn_box *last)
 		return(c);
 	}
 
+	if (STRNEQ(start, sz, "matrix", 6))
+		return(eqn_matrix(ep, last));
+
 	if (STRNEQ(start, sz, "left", 4)) {
 		if (NULL == (start = eqn_nexttok(ep, &sz))) {
 			EQN_MSG(MANDOCERR_EQNEOF, ep);
@@ -699,7 +774,20 @@ again:
 }
 
 static int
-eqn_do_set(struct eqn_node *ep)
+eqn_do_ign1(struct eqn_node *ep)
+{
+	const char	*start;
+
+	if (NULL == (start = eqn_nextrawtok(ep, NULL)))
+		EQN_MSG(MANDOCERR_EQNEOF, ep);
+	else
+		return(1);
+
+	return(0);
+}
+
+static int
+eqn_do_ign2(struct eqn_node *ep)
 {
 	const char	*start;