From 2cc9df49aa3cd600a0b05463454254f8b25ef6c3 Mon Sep 17 00:00:00 2001
From: Kristaps Dzonsons <kristaps@bsd.lv>
Date: Thu, 7 Jan 2010 10:05:24 +0000
Subject: Check for white-space at end of stand-alone macro line.

---
 man.c  | 13 ++++++++++---
 mdoc.c | 22 +++++++++++++++-------
 2 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/man.c b/man.c
index 4f02352b..8e9165f2 100644
--- a/man.c
+++ b/man.c
@@ -1,4 +1,4 @@
-/*	$Id: man.c,v 1.47 2010/01/01 17:14:27 kristaps Exp $ */
+/*	$Id: man.c,v 1.48 2010/01/07 10:05:24 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -378,6 +378,7 @@ man_ptext(struct man *m, int line, char *buf)
 
 	for (i = 0; ' ' == buf[i]; i++)
 		/* Skip leading whitespace. */ ;
+
 	if (0 == buf[i]) {
 		if ( ! pstring(m, line, 0, &buf[i], 0))
 			return(0);
@@ -463,7 +464,7 @@ man_pmacro(struct man *m, int ln, char *buf)
 		i++;
 		while (buf[i] && ' ' == buf[i])
 			i++;
-		if (0 == buf[i])
+		if ('\0' == buf[i])
 			goto out;
 	}
 
@@ -472,7 +473,7 @@ man_pmacro(struct man *m, int ln, char *buf)
 	/* Copy the first word into a nil-terminated buffer. */
 
 	for (j = 0; j < 4; j++, i++) {
-		if (0 == (mac[j] = buf[i]))
+		if ('\0' == (mac[j] = buf[i]))
 			break;
 		else if (' ' == buf[i])
 			break;
@@ -507,6 +508,12 @@ man_pmacro(struct man *m, int ln, char *buf)
 	while (buf[i] && ' ' == buf[i])
 		i++;
 
+	/* Trailing whitespace? */
+
+	if ('\0' == buf[i] && ' ' == buf[i - 1])
+		if ( ! man_pwarn(m, ln, i - 1, WTSPACE))
+			goto err;
+
 	/* Remove prior ELINE macro, if applicable. */
 
 	if (m->flags & MAN_ELINE) {
diff --git a/mdoc.c b/mdoc.c
index cd184b09..3dc159e6 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc.c,v 1.114 2010/01/01 17:14:29 kristaps Exp $ */
+/*	$Id: mdoc.c,v 1.115 2010/01/07 10:05:24 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -597,7 +597,8 @@ parsetext(struct mdoc *m, int line, char *buf)
 
 	for (i = 0; ' ' == buf[i]; i++)
 		/* Skip leading whitespace. */ ;
-	if (0 == buf[i])
+
+	if ('\0' == buf[i])
 		return(mdoc_perr(m, line, 0, ENOBLANK));
 
 	/*
@@ -613,7 +614,8 @@ parsetext(struct mdoc *m, int line, char *buf)
 		if (i && ' ' == buf[i] && '\\' == buf[i - 1])
 			continue;
 
-		buf[i++] = 0;
+		buf[i++] = '\0';
+
 		if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
 			return(0);
 
@@ -621,7 +623,7 @@ parsetext(struct mdoc *m, int line, char *buf)
 			/* Skip trailing whitespace. */ ;
 
 		j = i;
-		if (0 == buf[i])
+		if ('\0' == buf[i])
 			break;
 	}
 
@@ -658,7 +660,7 @@ parsemacro(struct mdoc *m, int ln, char *buf)
 
 	/* Empty lines are ignored. */
 
-	if (0 == buf[1])
+	if ('\0' == buf[1])
 		return(1);
 
 	i = 1;
@@ -669,14 +671,14 @@ parsemacro(struct mdoc *m, int ln, char *buf)
 		i++;
 		while (buf[i] && ' ' == buf[i])
 			i++;
-		if (0 == buf[i])
+		if ('\0' == buf[i])
 			return(1);
 	}
 
 	/* Copy the first word into a nil-terminated buffer. */
 
 	for (j = 0; j < 4; j++, i++) {
-		if (0 == (mac[j] = buf[i]))
+		if ('\0' == (mac[j] = buf[i]))
 			break;
 		else if (' ' == buf[i])
 			break;
@@ -707,6 +709,12 @@ parsemacro(struct mdoc *m, int ln, char *buf)
 	while (buf[i] && ' ' == buf[i])
 		i++;
 
+	/* Trailing whitespace? */
+
+	if ('\0' == buf[i] && ' ' == buf[i - 1])
+		if ( ! mdoc_pwarn(m, ln, i - 1, ETAILWS))
+			goto err;
+
 	/* 
 	 * Begin recursive parse sequence.  Since we're at the start of
 	 * the line, we don't need to do callable/parseable checks.
-- 
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