https://git.ruby-lang.org/ruby.git/commit/?id=14e013cdbb

From 14e013cdbbd937ab229a929d8743f271c6f89ab2 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Mon, 20 Apr 2020 18:41:03 +0900
Subject: [ruby/rdoc] Drop old rubies

* `RbConfig::CONFIG['ridir']` has been set since 1.9.2

* `ENV["HOME"]` has been defaulted to `USERPROFILE` since 1.9.0,
  and backported to 1.8.5 or later.

https://github.com/ruby/rdoc/commit/a3a614e676

diff --git a/lib/rdoc/ri/paths.rb b/lib/rdoc/ri/paths.rb
index f76721d..b1d5848 100644
--- a/lib/rdoc/ri/paths.rb
+++ b/lib/rdoc/ri/paths.rb
@@ -12,23 +12,12 @@ module RDoc::RI::Paths https://github.com/ruby/ruby/blob/trunk/lib/rdoc/ri/paths.rb#L12
 
   version = RbConfig::CONFIG['ruby_version']
 
-  BASE    = if RbConfig::CONFIG.key? 'ridir' then
-              File.join RbConfig::CONFIG['ridir'], version
-            else
-              File.join RbConfig::CONFIG['datadir'], 'ri', version
-            end
+  BASE    = File.join RbConfig::CONFIG['ridir'], version
 
-  homedir = begin
-              File.expand_path('~')
+  HOMEDIR = begin
+              File.expand_path('~/.rdoc')
             rescue ArgumentError
             end
-
-  homedir ||= ENV['HOME'] ||
-              ENV['USERPROFILE'] || ENV['HOMEPATH'] # for 1.8 compatibility
-
-  HOMEDIR = if homedir then
-              File.join homedir, ".rdoc"
-            end
   #:startdoc:
 
   ##
-- 
cgit v0.10.2


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