https://git.ruby-lang.org/ruby.git/commit/?id=5d20865708

From 5d20865708552a522d5eb39c4d9238f96693f8f2 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@g...>
Date: Wed, 25 Dec 2019 10:25:15 +0900
Subject: [ruby/readline] Add post_install_message

https://github.com/ruby/readline/commit/03126372b5

diff --git a/lib/readline.gemspec b/lib/readline.gemspec
index 0f8ff96..1e0d6f8 100644
--- a/lib/readline.gemspec
+++ b/lib/readline.gemspec
@@ -17,6 +17,16 @@ Gem::Specification.new do |spec| https://github.com/ruby/ruby/blob/trunk/lib/readline.gemspec#L17
   spec.files         = Dir['BSDL', 'COPYING', 'README.md', 'lib/readline.rb']
   spec.require_paths = ['lib']
 
+  spec.post_install_message = <<~EOM
+    This is just loader for "readline". If Ruby has "readline-ext" gem that
+    is a native extension, this gem will load its first. If Ruby doesn't have
+    the "readline-ext" gem this gem will load "reline" that is a compatible
+    library with "readline-ext" gem and is implemented by pure Ruby.
+
+    If you intend to use GNU Readline by `require 'readline'`, please install
+    "readline-ext" gem.
+  EOM
+
   spec.add_runtime_dependency 'reline'
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'rake'
-- 
cgit v0.10.2


--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/