Raise a warning when text follows the `EN'.

1 files changed, 7 insertions, 1 deletions

diff --git a/eqn.c b/eqn.c
index ffdf7a96..8cdef7b6 100644
--- a/eqn.c
+++ b/eqn.c
@@ -285,9 +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);
 	}