[Misc #21350] [DOC] Include docs of bundled gems

Author: nobu

.rdoc_options

@@ -11,6 +11,13 @@ rdoc_include:
 exclude:
 - \Alib/irb
 - \.gemspec\z
+- \.java\z
+- \.rbs\z
+- \.re\z
+- \.yaml\z
+- /depend\z
+- /bin/console\z
+- /bin/setup\z
 
 autolink_excluded_words:
 - Class

common.mk

@@ -65,7 +65,7 @@ LIBRUBY_EXTS  = ./.libruby-with-ext.time
 REVISION_H    = ./.revision.time
 PLATFORM_D    = $(TIMESTAMPDIR)/.$(PLATFORM_DIR).time
 ENC_TRANS_D   = $(TIMESTAMPDIR)/.enc-trans.time
-RDOC          = $(XRUBY) "$(tooldir)/rdoc-srcdir"
+RDOC          = $(XRUBY) "$(tooldir)/rdoc-srcdir" --bundled-gems gems/bundled_gems .bundle/gems
 RDOCOUT       = $(EXTOUT)/rdoc
 HTMLOUT       = $(EXTOUT)/html
 CAPIOUT       = doc/capi

tool/rdoc-srcdir

@@ -17,6 +17,16 @@ options.title = options.title.sub(/Ruby \K.*version/) {
     .sort # "MAJOR" < "MINOR", fortunately
     .to_h.values.join(".")
 }
+
+if ARGV.first == "--bundled-gems"
+  _, gems_list, gems_dir = ARGV.shift(3)
+  bundles = File.read(gems_list)
+  bundles.scan(/^([^#\s]+)\s+([^#\s]+)/) do |g, v|
+    d = "#{gems_dir}/#{g}-#{v}/"
+    ARGV << d if Dir.exist?(d)
+  end
+end
+
 options.parse ARGV
 
 options.singleton_class.define_method(:finish) do