--- ed-1.15/regex.c.orig	Sat Feb  1 14:17:22 2020
+++ ed-1.15/regex.c	Sat Feb  1 14:17:34 2020
@@ -19,7 +19,7 @@
 
 #include <stddef.h>
 #include <errno.h>
-#include <regex.h>
+#include <pcre2posix.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>