Fix config editing in Windows

src/utils.rs

@@ -92,8 +92,12 @@ pub fn sudo() -> Option<PathBuf> {
     which("sudo").or_else(|| which("pkexec"))
 }
 
-pub fn editor() -> String {
-    env::var("EDITOR").unwrap_or_else(|_| String::from(if cfg!(windows) { "notepad" } else { "vi" }))
+pub fn editor() -> Vec<String> {
+    env::var("EDITOR")
+        .unwrap_or_else(|_| String::from(if cfg!(windows) { "notepad" } else { "vi" }))
+        .split_whitespace()
+        .map(|s| s.to_owned())
+        .collect()
 }
 
 pub fn require<T: AsRef<OsStr> + Debug>(binary_name: T) -> Result<PathBuf> {