From a2da636ab340b02d79b95ff02a653199b01e0af2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Campinas?= <stephane.campinas@gmail.com>
Date: Mon, 26 Nov 2018 20:39:12 +0100
Subject: [PATCH] allow to run a rustfmt command from cargo-fmt even when there
 is no target

---
 src/cargo-fmt/main.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/cargo-fmt/main.rs b/src/cargo-fmt/main.rs
index e903c27555a5..b24965658851 100644
--- a/src/cargo-fmt/main.rs
+++ b/src/cargo-fmt/main.rs
@@ -322,7 +322,8 @@ fn run_rustfmt(
     fmt_args: &[String],
     verbosity: Verbosity,
 ) -> Result<i32, io::Error> {
-    let by_edition = targets
+    let default_edition = String::from("2015");
+    let mut by_edition = targets
         .iter()
         .inspect(|t| {
             if verbosity == Verbosity::Verbose {
@@ -334,6 +335,9 @@ fn run_rustfmt(
             h.entry(t.0).or_insert_with(Vec::new).push(t.1);
             h
         });
+    if by_edition.is_empty() {
+        by_edition.insert(&default_edition, Vec::new());
+    }
 
     for (edition, files) in by_edition {
         let stdout = if verbosity == Verbosity::Quiet {