From d336f88eeeef99ec8a12194a12a3cbfcf9330898 Mon Sep 17 00:00:00 2001
From: Hans Meine <hans_meine@gmx.net>
Date: Tue, 19 Sep 2023 18:26:49 +0200
Subject: [PATCH] explicitly mention compile-time options of logging crates for
 code-size reduction

---
 src/reference/code-size.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/reference/code-size.md b/src/reference/code-size.md
index 107cfef8..6c3a45bc 100644
--- a/src/reference/code-size.md
+++ b/src/reference/code-size.md
@@ -220,6 +220,11 @@ code sizes.
 `format!`, `to_string`, etc... can bring in a lot of code bloat. If possible,
 only do string formatting in debug mode, and in release mode use static strings.
 
+Note that the common `tracing` and `log` crates [support compile-time
+filters](https://docs.rs/tracing/latest/tracing/level_filters/index.html) that
+allow to make logging macros compile to nothing (either depending on the log
+level or completely).
+
 ### Avoid Panicking
 
 This is definitely easier said than done, but tools like `twiggy` and manually