From d2ce6dd46653f2fa072b82a3a2a2f9ee6153621d Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 4 Feb 2026 08:12:49 +0900
Subject: tool: Update a comment `ifchange` [ci skip]

---
 tool/ifchange | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tool/ifchange b/tool/ifchange
index b20ae4461a..2a5f3db522 100755
--- a/tool/ifchange
+++ b/tool/ifchange
@@ -1,7 +1,8 @@
 #!/bin/sh
 # usage: ifchange target temporary
 
-# Used in generating revision.h via Makefiles.
+# Used in generating various files such as rbconfig.rb, revision.h,
+# etc. via Makefiles.
 
 help() {
     cat <<HELP
-- 
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