Add rustfmt to the tools list

src/rustup-cli/self_update.rs

@@ -184,14 +184,16 @@ Studio 2013 and during install select the "C++ tools":
 
 _Install the C++ build tools before proceeding_.
 
-If you will be targetting the GNU ABI or otherwise know what you are
+If you will be targeting the GNU ABI or otherwise know what you are
 doing then it is fine to continue installation without the build
 tools, but otherwise, install the C++ build tools before proceeding.
 "#;
 
 static TOOLS: &'static [&'static str]
     = &["rustc", "rustdoc", "cargo", "rust-lldb", "rust-gdb", "rls"];
 
+static DUP_TOOLS: &'static [&'static str] = &["rustfmt", "cargo-fmt"];
+
 static UPDATE_ROOT: &'static str
     = "https://static.rust-lang.org/rustup";
 
@@ -652,6 +654,18 @@ fn install_bins() -> Result<()> {
         let ref tool_path = bin_path.join(&format!("{}{}", tool, EXE_SUFFIX));
         try!(utils::hard_or_symlink_file(rustup_path, tool_path));
     }
+    for tool in DUP_TOOLS {
+        let ref token_path = bin_path.join(&format!("{}.rustup", tool));
+        let ref tool_path = bin_path.join(&format!("{}{}", tool, EXE_SUFFIX));
+        if tool_path.exists() && !token_path.exists() {
+            warn!("tool `{}` is already installed, remove it from `{}`, then run `rustup update` \
+                   to have rustup manage this tool.",
+                  tool, bin_path.to_string_lossy());
+        } else {
+            try!(utils::hard_or_symlink_file(rustup_path, tool_path));
+            try!(utils::write_file("<token file>", token_path, ""));
+        }
+    }
 
     Ok(())
 }
@@ -752,7 +766,7 @@ pub fn uninstall(no_prompt: bool) -> Result<()> {
 
     // Then everything in bin except rustup and tools. These can't be unlinked
     // until this process exits (on windows).
-    let tools = TOOLS.iter().map(|t| format!("{}{}", t, EXE_SUFFIX));
+    let tools = TOOLS.iter().chain(DUP_TOOLS.iter()).map(|t| format!("{}{}", t, EXE_SUFFIX));
     let tools: Vec<_> = tools.chain(vec![format!("rustup{}", EXE_SUFFIX)]).collect();
     for dirent in try!(fs::read_dir(&cargo_home.join("bin")).chain_err(|| read_dir_err)) {
         let dirent = try!(dirent.chain_err(|| read_dir_err));

src/rustup-win-installer/src/lib.rs

@@ -16,7 +16,7 @@ pub const LOGMSG_STANDARD: i32 = 2;
 
 // TODO: share this with self_update.rs
 static TOOLS: &'static [&'static str]
-    = &["rustc", "rustdoc", "cargo", "rust-lldb", "rust-gdb", "rls"];
+    = &["rustc", "rustdoc", "cargo", "rust-lldb", "rust-gdb", "rls", "rustfmt", "cargo-fmt"];
 
 #[no_mangle]
 /// This is be run as a `deferred` action after `InstallFiles` on install and upgrade