octal_escapes: note on print!() format strings

Author: birkenfeld

clippy_lints/src/octal_escapes.rs

@@ -27,6 +27,10 @@ declare_clippy_lint! {
     /// The actual meaning can be the intended one. `\x00` can be used in these
     /// cases to be unambigious.
     ///
+    /// The lint does not trigger for format strings in `print!()`, `write!()`
+    /// and friends since the string is already preprocessed when Clippy lints
+    /// can see it.
+    ///
     /// # Example
     /// ```rust
     /// // Bad