===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/less/cvt.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -r1.8 -r1.9
--- src/usr.bin/less/cvt.c	2016/09/17 15:06:41	1.8
+++ src/usr.bin/less/cvt.c	2019/02/26 11:01:54	1.9
@@ -77,7 +77,7 @@
 				dst--;
 			} while (dst > odst &&
 			    !IS_ASCII_OCTET(*dst) && !IS_UTF8_LEAD(*dst));
-		} else if ((ops & CVT_ANSI) && IS_CSI_START(ch)) {
+		} else if ((ops & CVT_ANSI) && ch == ESC) {
 			/* Skip to end of ANSI escape sequence. */
 			src++;	/* skip the CSI start char */
 			while (src < src_end)