===================================================================
RCS file: /cvs/texi2mdoc/main.c,v
retrieving revision 1.51
retrieving revision 1.52
diff -u -p -r1.51 -r1.52
--- texi2mdoc/main.c	2015/02/27 19:28:55	1.51
+++ texi2mdoc/main.c	2015/02/28 00:03:20	1.52
@@ -1,4 +1,4 @@
-/*	$Id: main.c,v 1.51 2015/02/27 19:28:55 kristaps Exp $ */
+/*	$Id: main.c,v 1.52 2015/02/28 00:03:20 kristaps Exp $ */
 /*
  * Copyright (c) 2015 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -614,8 +614,8 @@ doignblock(struct texi *p, enum texicmd cmd, size_t *p
 	 * Thus, we keep track of scopes for matching "end" blocks.
 	 */
 	while (stack > 0 && *pos < BUFSZ(p)) {
-		if (stack > 10)
-			abort();
+		if (stack > 64)
+			texierr(p, "run-away nested stack?");
 		endt = memmem(&BUF(p)[*pos], BUFSZ(p) - *pos, end, esz);
 		startt = memmem(&BUF(p)[*pos], BUFSZ(p) - *pos, start, ssz);
 		if (NULL == endt) {