diff --git a/plugins/sudoers/editor.c b/plugins/sudoers/editor.c
index 7a6164f69..5ca4eb0af 100644
--- a/plugins/sudoers/editor.c
+++ b/plugins/sudoers/editor.c
@@ -1,7 +1,7 @@
 /*
  * SPDX-License-Identifier: ISC
  *
- * Copyright (c) 2010-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ * Copyright (c) 2010-2015, 2020-2022 Todd C. Miller <Todd.Miller@sudo.ws>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -103,10 +103,8 @@ copy_arg(const char *src, size_t len)
     if ((copy = malloc(len + 1)) != NULL) {
 	sudoers_gc_add(GC_PTR, copy);
 	for (dst = copy; src < src_end; ) {
-	    if (src[0] == '\\' && src[1] != '\0') {
+	    if (src[0] == '\\' && src[1] != '\0')
 		src++;
-		continue;
-	    }
 	    *dst++ = *src++;
 	}
 	*dst = '\0';
diff --git a/plugins/sudoers/regress/editor/check_editor.c b/plugins/sudoers/regress/editor/check_editor.c
index 084d1628a..eef9d384e 100644
--- a/plugins/sudoers/regress/editor/check_editor.c
+++ b/plugins/sudoers/regress/editor/check_editor.c
@@ -1,7 +1,7 @@
 /*
  * SPDX-License-Identifier: ISC
  *
- * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ * Copyright (c) 2021-2022 Todd C. Miller <Todd.Miller@sudo.ws>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -63,6 +63,15 @@ struct test_data {
 	3,
 	{ "/usr/bin/vi\\", "--", "/etc/hosts", "/bogus/file", NULL }
     },
+    {
+	/* GitHub issue #179 */
+	"EDITOR=sed -rie s/^\\\\(foo\\\\)/waldo\\\\1/",
+	1,
+	{ "/etc/sudoers", NULL },
+	"/usr/bin/sed",
+	5,
+	{ "sed", "-rie", "s/^\\(foo\\)/waldo\\1/", "--", "/etc/sudoers", NULL }
+    },
     { NULL }
 };