From 033741246cdb8c653cc3bf9a6cc12f23dac08e6e Mon Sep 17 00:00:00 2001
From: Johann Hofmann <mail@johann-hofmann.com>
Date: Sat, 2 Jul 2016 22:19:04 +0200
Subject: [PATCH] Show more helpful error if rustfmt is not in PATH.

This fixes #1071.
---
 src/bin/cargo-fmt.rs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/bin/cargo-fmt.rs b/src/bin/cargo-fmt.rs
index 909d62b20f8..7bd61dd1661 100644
--- a/src/bin/cargo-fmt.rs
+++ b/src/bin/cargo-fmt.rs
@@ -204,6 +204,16 @@ fn format_files(files: &Vec<PathBuf>,
         .stdout(stdout)
         .args(files)
         .args(fmt_args)
-        .spawn());
+        .spawn()
+        .map_err(|e| {
+            match e.kind() {
+                std::io::ErrorKind::NotFound => {
+                    std::io::Error::new(std::io::ErrorKind::Other,
+                                        "Could not run rustfmt, please make sure it is in your \
+                                         PATH.")
+                }
+                _ => e,
+            }
+        }));
     command.wait()
 }