message: Fix syntax error in src/shell/variables.rs
  introduced by
diff: @@ -200,7 +200,7 @@ impl Variables {
  eprintln!("ion: {} is not a valid color", name);
  None
  }
  - }
  + },
  "env" => env::var(variable).map(Into::into).ok(),
  _ => {
  // Attempt to obtain the given namespace from our lazily-generated map of namespaces.
  