From cc3ce0007d734c186111c5f451940ba0ce6b5fe3 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Thu, 8 Mar 2018 23:24:27 +0300
Subject: [PATCH] Fix `--explain`

---
 src/bin/cli/mod.rs               | 6 ++++++
 tests/testsuite/cargo_command.rs | 3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/bin/cli/mod.rs b/src/bin/cli/mod.rs
index bd1585358..078ec624a 100644
--- a/src/bin/cli/mod.rs
+++ b/src/bin/cli/mod.rs
@@ -49,6 +49,12 @@ pub fn do_main(config: &mut Config) -> CliResult {
         return Ok(());
     }
 
+    if let Some(ref code) = args.value_of("explain") {
+        let mut procss = config.rustc()?.process();
+        procss.arg("--explain").arg(code).exec()?;
+        return Ok(());
+    }
+
     if args.is_present("list") {
         println!("Installed Commands:");
         for command in list_commands(config) {
diff --git a/tests/testsuite/cargo_command.rs b/tests/testsuite/cargo_command.rs
index 598f5a717..7944fbeed 100644
--- a/tests/testsuite/cargo_command.rs
+++ b/tests/testsuite/cargo_command.rs
@@ -214,5 +214,6 @@ fn cargo_help() {
 #[test]
 fn explain() {
     assert_that(cargo_process().arg("--explain").arg("E0001"),
-                execs().with_status(0));
+                execs().with_status(0).with_stdout_contains("\
+This error suggests that the expression arm corresponding to the noted pattern"));
 }
-- 
2.30.2