--- funcs/func_strings.c.orig	2019-01-01 19:31:41.441709448 +0100
+++ funcs/func_strings.c	2019-01-01 19:28:49.107431560 +0100
@@ -1290,6 +1290,12 @@
 		} else if (*dataptr == '"') {
 			*bufptr++ = '\\';
 			*bufptr++ = '"';
+		} else if (*dataptr == '(') {
+			*bufptr++ = '\\';
+			*bufptr++ = '(';
+		} else if (*dataptr == '[') {
+			*bufptr++ = '\\';
+			*bufptr++ = '[';
 		} else if (*dataptr == '\0') {
 			break;
 		} else {