Comment 3 for bug 1773262

Fixed in 5.3.2

Change is:
diff --git a/servers_charset_list b/servers_charset_list
index b83f28d..f39760a 100644
--- a/servers_charset_list
+++ b/servers_charset_list
@@ -13,7 +13,7 @@ whois.ax iso-8859-1
 whois.registro.br iso-8859-1
 whois.cira.ca iso-8859-1
 whois.nic.ch utf-8
-whois.nic.cl iso-8859-1
+whois.nic.cl utf-8
 whois.cnnic.cn utf-8
 cwhois.cnnic.cn utf-8
 whois.nic.cz utf-8

I'm not entirely sure on potential regressions of this to consider an SRU for it.
Also it was found while discussing that actual .cl domains work already even without the update (it only is an issue on not founds)

root@c:~# whois gob.cl
%%
%% This is the NIC Chile Whois server (whois.nic.cl).
%%
%% Rights restricted by copyright.
%% See https://www.nic.cl/normativa/politica-publicacion-de-datos-cl.pdf
%%

Domain name: gob.cl
Registrant name: Ministerio del Interior (SUBSECRETARIA DEL MINISTERIO DEL
INTERIOR)
Registrant organisation:
Registrar name: NIC Chile
Registrar URL: https://www.nic.cl
Creation date: 1997-01-01 00:00:59 CLST
Expiration date: 2024-11-14 10:07:03 CLST
Name server: ns.gob.cl (163.247.54.111 2801:2:85::54:0:111)
Name server: ns2.gob.cl (163.247.70.25 2801:2:85::70:0:25)
Name server: ns6.gob.cl (163.247.72.25 2801:2:85::72:0:25)
Name server: ns7.gob.cl (163.247.75.25 2801:2:85::75:0:25)
Name server: a.nic.cl
Name server: b.nic.cl

%%
%% For communication with domain contacts please use website.
%% See https://www.nic.cl/registry/Whois.do?d=gob.cl
%%

Due to the unclear risk of regressions and the prove that it is working with existing domains I'll set the SRU tasks to Won't Fix for now unless there is a discussion clarifying why it is needed and no bug risk.