From c40fbe388a28de6329392f97cdeb82f8a33ef7a0 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 3 Feb 2026 11:06:09 +0900
Subject: [DOC] Exclude `require` in RubyGems not to override the original

Fix ruby/rdoc#1592.
---
 common.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common.mk b/common.mk
index f7061f8975..9506869b72 100644
--- a/common.mk
+++ b/common.mk
@@ -75,6 +75,7 @@ HTMLOUT       = $(EXTOUT)/html
 CAPIOUT       = doc/capi
 INSTALL_DOC_OPTS = --rdoc-output="$(RDOCOUT)" --html-output="$(HTMLOUT)"
 RDOC_GEN_OPTS = --no-force-update \
+	--exclude '^lib/rubygems/core_ext/kernel_require\.rb$$' \
 	$(empty)
 
 INITOBJS      = dmyext.$(OBJEXT) dmyenc.$(OBJEXT)
-- 
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