Actually add size.rb. rails/rails#32318.

headius · headius · commit bd860b80a7d9 · 2018-03-26T21:19:41.000-05:00
diff --git a/lib/ruby/stdlib/io/console/size.rb b/lib/ruby/stdlib/io/console/size.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: false
+# fallback to console window size
+def IO.default_console_size
+  [
+    ENV["LINES"].to_i.nonzero? || 25,
+    ENV["COLUMNS"].to_i.nonzero? || 80,
+  ]
+end
+
+begin
+  require 'io/console'
+rescue LoadError
+  class << IO
+    alias console_size default_console_size
+  end
+else
+  # returns console window size
+  def IO.console_size
+    console.winsize
+  rescue NoMethodError
+    default_console_size
+  end
+end
