Strip angle brackets from author email before passing to template.

Some people already have angle brackets around their email in
git settings or other author sources. Right now if you create
a new project the Cargo.toml would render something like:

authors = ["bar <<foo@baz>>"]

instead of

authors = ["bar <foo@baz>"]

This detects the emails that start and end with <> and removes them.

src/cargo/ops/cargo_new.rs

@@ -660,7 +660,17 @@ fn discover_author() -> CargoResult<(String, Option<String>)> {
         .or_else(|| get_environment_variable(&email_variables[3..]));
 
     let name = name.trim().to_string();
-    let email = email.map(|s| s.trim().to_string());
+    let email = email.map(|s| {
+        let mut s = s.trim();
+
+        // In some cases emails will already have <> remove them since they
+        // are already added when needed.
+        if s.starts_with("<") && s.ends_with(">") {
+            s = &s[1..s.len() - 1];
+        }
+
+        s.to_string()
+    });
 
     Ok((name, email))
 }

tests/testsuite/new.rs

@@ -337,6 +337,23 @@ fn author_prefers_cargo() {
     assert!(!root.join("foo/.gitignore").exists());
 }
 
+#[test]
+fn strip_angle_bracket_author_email() {
+    create_empty_gitconfig();
+    cargo_process("new foo")
+        .env("USER", "bar")
+        .env("EMAIL", "<baz>")
+        .run();
+
+    let toml = paths::root().join("foo/Cargo.toml");
+    let mut contents = String::new();
+    File::open(&toml)
+        .unwrap()
+        .read_to_string(&mut contents)
+        .unwrap();
+    assert!(contents.contains(r#"authors = ["bar <baz>"]"#));
+}
+
 #[test]
 fn git_prefers_command_line() {
     let root = paths::root();