From 94a76269aaf313e2d6dcf9a08ed1e697302d8d89 Mon Sep 17 00:00:00 2001
From: Cloud Wu <cloudwu@gmail.com>
Date: Thu, 27 Oct 2022 15:30:06 +0800
Subject: [PATCH] Fix #1668

---
 lualib-src/lua-cluster.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lualib-src/lua-cluster.c b/lualib-src/lua-cluster.c
index da671278..668bb1f1 100644
--- a/lualib-src/lua-cluster.c
+++ b/lualib-src/lua-cluster.c
@@ -603,6 +603,11 @@ lnodename(lua_State *L) {
 	pid_t pid = getpid();
 	char hostname[256];
 	if (gethostname(hostname, sizeof(hostname))==0) {
+		int i;
+		for (i=0; hostname[i]; i++) {
+			if (hostname[i] <= ' ')
+				hostname[i] = '_';
+		}
 		lua_pushfstring(L, "%s%d", hostname, (int)pid);
 	} else {
 		lua_pushfstring(L, "noname%d", (int)pid);