From e78621bcde92ae61191f70db55f994f8576de035 Mon Sep 17 00:00:00 2001
From: Eval EXEC <execvy@gmail.com>
Date: Wed, 14 Jun 2023 16:39:32 +0800
Subject: [PATCH] Fix `ckb init -c unsupported_spec` should not create config
 files

---
 util/app-config/src/cli.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/util/app-config/src/cli.rs b/util/app-config/src/cli.rs
index a63a974b86..522d3faee8 100644
--- a/util/app-config/src/cli.rs
+++ b/util/app-config/src/cli.rs
@@ -1,6 +1,6 @@
 //! CKB command line arguments parser.
 use ckb_build_info::Version;
-use ckb_resource::{DEFAULT_P2P_PORT, DEFAULT_RPC_PORT, DEFAULT_SPEC};
+use ckb_resource::{AVAILABLE_SPECS, DEFAULT_P2P_PORT, DEFAULT_RPC_PORT, DEFAULT_SPEC};
 use clap::{Arg, ArgGroup, ArgMatches, Command};
 
 /// binary file name(ckb)
@@ -414,6 +414,12 @@ fn init() -> Command {
             Arg::new(ARG_CHAIN)
                 .short('c')
                 .long(ARG_CHAIN)
+                .value_parser(
+                    AVAILABLE_SPECS
+                        .iter()
+                        .map(|v| v.to_string())
+                        .collect::<Vec<_>>(),
+                )
                 .default_value(DEFAULT_SPEC)
                 .help("Initializes CKB directory for <chain>"),
         )