eregon	2018-08-17 20:22:55 +0900 (Fri, 17 Aug 2018)

  New Revision: 64413

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=64413

  Log:
    Add a note how to run specs under older Ruby versions

  Modified files:
    trunk/spec/README.md
Index: spec/README.md
===================================================================
--- spec/README.md	(revision 64412)
+++ spec/README.md	(revision 64413)
@@ -22,6 +22,13 @@ Currently, the only module which is MRI- https://github.com/ruby/ruby/blob/trunk/spec/README.md#L22
 Version guards (`ruby_version_is`) must be added for new features or features
 which change behavior or are removed. See `spec/ruby/CONTRIBUTING.md` for details.
 
+To verify specs are compatible with older Ruby versions:
+```
+cd spec/ruby
+$RUBY_MANAGER use 2.3.7
+../mspec/bin/mspec -j
+```
+
 ## Running ruby/spec
 
 To run all specs:

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