3 files changed, 44 insertions, 25 deletions

diff --git a/mandocdb.c b/mandocdb.c
index e2b73b84..b2da7633 100644
--- a/mandocdb.c
+++ b/mandocdb.c
@@ -1506,32 +1506,10 @@ parse_mdoc_Xr(struct mpage *mpage, const struct mdoc_node *n)
 static int
 parse_mdoc_Nd(struct mpage *mpage, const struct mdoc_node *n)
 {
-	size_t		 sz;
-
-	if (MDOC_BODY != n->type)
-		return(0);
 
-	/*
-	 * Special-case the `Nd' because we need to put the description
-	 * into the document table.
-	 */
-
-	for (n = n->child; NULL != n; n = n->next) {
-		if (MDOC_TEXT == n->type) {
-			if (NULL != mpage->desc) {
-				sz = strlen(mpage->desc) +
-				     strlen(n->string) + 2;
-				mpage->desc = mandoc_realloc(
-				    mpage->desc, sz);
-				strlcat(mpage->desc, " ", sz);
-				strlcat(mpage->desc, n->string, sz);
-			} else
-				mpage->desc = mandoc_strdup(n->string);
-		}
-		if (NULL != n->child)
-			parse_mdoc_Nd(mpage, n);
-	}
-	return(1);
+	if (MDOC_BODY == n->type)
+		mdoc_deroff(&mpage->desc, n);
+	return(0);
 }
 
 static int
diff --git a/mdoc.c b/mdoc.c
index 814e43b5..c3f84c4a 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -22,6 +22,7 @@
 #include <sys/types.h>
 
 #include <assert.h>
+#include <ctype.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -1020,3 +1021,42 @@ mdoc_isdelim(const char *p)
 
 	return(DELIM_NONE);
 }
+
+void
+mdoc_deroff(char **dest, const struct mdoc_node *n)
+{
+	char	*cp;
+	size_t	 sz;
+
+	if (MDOC_TEXT != n->type) {
+		for (n = n->child; n; n = n->next)
+			mdoc_deroff(dest, n);
+		return;
+	}
+
+	/* Skip leading whitespace. */
+
+	for (cp = n->string; '\0' != *cp; cp++)
+		if (0 == isspace((unsigned char)*cp))
+			break;
+
+	/* Skip trailing whitespace. */
+
+	for (sz = strlen(cp); sz; sz--)
+		if (0 == isspace((unsigned char)cp[sz-1]))
+			break;
+
+	/* Skip empty strings. */
+
+	if (0 == sz)
+		return;
+
+	if (NULL == *dest) {
+		*dest = mandoc_strndup(cp, sz);
+		return;
+	}
+
+	mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
+	free(*dest);
+	*dest = cp;
+}
diff --git a/mdoc.h b/mdoc.h
index 7bc8819e..86da0334 100644
--- a/mdoc.h
+++ b/mdoc.h
@@ -389,6 +389,7 @@ struct	mdoc;
 
 const struct mdoc_node *mdoc_node(const struct mdoc *);
 const struct mdoc_meta *mdoc_meta(const struct mdoc *);
+void mdoc_deroff(char **, const struct mdoc_node *);
 
 __END_DECLS