From f92f08ff23dbda568ef66fea4fbc2216249f60e1 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 21 Feb 2022 13:05:24 +0900
Subject: [PATCH] [DOC] Set the documentation title and main page

Copied from https://github.com/ruby/docs.ruby-lang.org/ to be as
same as docs.ruby-lang.org.
---
 .rdoc_options | 2 ++
 common.mk     | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/.rdoc_options b/.rdoc_options
index 88db0774e7..760507c7a2 100644
--- a/.rdoc_options
+++ b/.rdoc_options
@@ -1,2 +1,4 @@
 ---
 page_dir: doc
+main_page: README.md
+title: Documentation for Ruby development version
diff --git a/common.mk b/common.mk
index 5af9d92571..99e11c215d 100644
--- a/common.mk
+++ b/common.mk
@@ -70,7 +70,9 @@ RDOCOUT       = $(EXTOUT)/rdoc
 HTMLOUT       = $(EXTOUT)/html
 CAPIOUT       = doc/capi
 INSTALL_DOC_OPTS = --rdoc-output="$(RDOCOUT)" --html-output="$(HTMLOUT)"
-RDOC_GEN_OPTS = --page-dir "$(srcdir)/doc" --no-force-update
+RDOC_GEN_OPTS = --page-dir "$(srcdir)/doc" --no-force-update \
+	--title "Documentation for Ruby $(RUBY_API_VERSION)" \
+	--main README.md
 
 INITOBJS      = dmyext.$(OBJEXT) dmyenc.$(OBJEXT)
 NORMALMAINOBJ = main.$(OBJEXT)