===================================================================
RCS file: /cvs/mandoc/mdoc.c,v
retrieving revision 1.224
retrieving revision 1.229
diff -u -p -r1.224 -r1.229
--- mandoc/mdoc.c	2014/08/10 23:54:41	1.224
+++ mandoc/mdoc.c	2014/11/19 03:08:17	1.229
@@ -1,4 +1,4 @@
-/*	$Id: mdoc.c,v 1.224 2014/08/10 23:54:41 schwarze Exp $ */
+/*	$Id: mdoc.c,v 1.229 2014/11/19 03:08:17 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -91,9 +91,6 @@ static	struct mdoc_node *node_alloc(struct mdoc *, int
 				enum mdoct, enum mdoc_type);
 static	int		  node_append(struct mdoc *,
 				struct mdoc_node *);
-#if 0
-static	int		  mdoc_preptext(struct mdoc *, int, char *, int);
-#endif
 static	int		  mdoc_ptext(struct mdoc *, int, char *, int);
 static	int		  mdoc_pmacro(struct mdoc *, int, char *, int);
 
@@ -208,6 +205,8 @@ mdoc_addeqn(struct mdoc *mdoc, const struct eqn *ep)
 
 	n = node_alloc(mdoc, ep->ln, ep->pos, MDOC_MAX, MDOC_EQN);
 	n->eqn = ep;
+	if (ep->ln > mdoc->last->line)
+		n->flags |= MDOC_LINE;
 
 	if ( ! node_append(mdoc, n))
 		return(0);
@@ -239,7 +238,8 @@ int
 mdoc_parseln(struct mdoc *mdoc, int ln, char *buf, int offs)
 {
 
-	mdoc->flags |= MDOC_NEWLINE;
+	if (mdoc->last->type != MDOC_EQN || ln > mdoc->last->line)
+		mdoc->flags |= MDOC_NEWLINE;
 
 	/*
 	 * Let the roff nS register switch SYNOPSIS mode early,
@@ -609,61 +609,7 @@ mdoc_node_relink(struct mdoc *mdoc, struct mdoc_node *
 	return(node_append(mdoc, p));
 }
 
-#if 0
 /*
- * Pre-treat a text line.
- * Text lines can consist of equations, which must be handled apart from
- * the regular text.
- * Thus, use this function to step through a line checking if it has any
- * equations embedded in it.
- * This must handle multiple equations AND equations that do not end at
- * the end-of-line, i.e., will re-enter in the next roff parse.
- */
-static int
-mdoc_preptext(struct mdoc *mdoc, int line, char *buf, int offs)
-{
-	char		*start, *end;
-	char		 delim;
-
-	while ('\0' != buf[offs]) {
-		/* Mark starting position if eqn is set. */
-		start = NULL;
-		if ('\0' != (delim = roff_eqndelim(mdoc->roff)))
-			if (NULL != (start = strchr(buf + offs, delim)))
-				*start++ = '\0';
-
-		/* Parse text as normal. */
-		if ( ! mdoc_ptext(mdoc, line, buf, offs))
-			return(0);
-
-		/* Continue only if an equation exists. */
-		if (NULL == start)
-			break;
-
-		/* Read past the end of the equation. */
-		offs += start - (buf + offs);
-		assert(start == &buf[offs]);
-		if (NULL != (end = strchr(buf + offs, delim))) {
-			*end++ = '\0';
-			while (' ' == *end)
-				end++;
-		}
-
-		/* Parse the equation itself. */
-		roff_openeqn(mdoc->roff, NULL, line, offs, buf);
-
-		/* Process a finished equation? */
-		if (roff_closeeqn(mdoc->roff))
-			if ( ! mdoc_addeqn(mdoc, roff_eqn(mdoc->roff)))
-				return(0);
-		offs += (end - (buf + offs));
-	}
-
-	return(1);
-}
-#endif
-
-/*
  * Parse free-form text, that is, a line that does not begin with the
  * control character.
  */
@@ -788,46 +734,47 @@ mdoc_ptext(struct mdoc *mdoc, int line, char *buf, int
 static int
 mdoc_pmacro(struct mdoc *mdoc, int ln, char *buf, int offs)
 {
+	struct mdoc_node *n;
+	const char	 *cp;
 	enum mdoct	  tok;
 	int		  i, sv;
 	char		  mac[5];
-	struct mdoc_node *n;
 
-	/* Empty post-control lines are ignored. */
-
-	if ('"' == buf[offs]) {
-		mandoc_msg(MANDOCERR_COMMENT_BAD, mdoc->parse,
-		    ln, offs, NULL);
-		return(1);
-	} else if ('\0' == buf[offs])
-		return(1);
-
 	sv = offs;
 
 	/*
 	 * Copy the first word into a nil-terminated buffer.
-	 * Stop copying when a tab, space, or eoln is encountered.
+	 * Stop when a space, tab, escape, or eoln is encountered.
 	 */
 
 	i = 0;
-	while (i < 4 && '\0' != buf[offs] && ' ' != buf[offs] &&
-	    '\t' != buf[offs])
+	while (i < 4 && strchr(" \t\\", buf[offs]) == NULL)
 		mac[i++] = buf[offs++];
 
 	mac[i] = '\0';
 
 	tok = (i > 1 && i < 4) ? mdoc_hash_find(mac) : MDOC_MAX;
 
-	if (MDOC_MAX == tok) {
+	if (tok == MDOC_MAX) {
 		mandoc_msg(MANDOCERR_MACRO, mdoc->parse,
 		    ln, sv, buf + sv - 1);
 		return(1);
 	}
 
-	/* Disregard the first trailing tab, if applicable. */
+	/* Skip a leading escape sequence or tab. */
 
-	if ('\t' == buf[offs])
+	switch (buf[offs]) {
+	case '\\':
+		cp = buf + offs + 1;
+		mandoc_escape(&cp, NULL, NULL);
+		offs = cp - buf;
+		break;
+	case '\t':
 		offs++;
+		break;
+	default:
+		break;
+	}
 
 	/* Jump to the next non-whitespace word. */