[ruby/ostruct] Alias less methods

Skips methods that do not end with letter (in particular `!~` and `=~`)
For JRuby, also skip `instance_exec`, `instance_eval` and `eval`

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/ostruct.rb b/lib/ostruct.rb
index c2de7a493d..e320e6db41 100644
--- a/lib/ostruct.rb
+++ b/lib/ostruct.rb
@@ -453,7 +453,12 @@ class OpenStruct
   end
 
   # Make all public methods (builtin or our own) accessible with <code>!</code>:
-  instance_methods.each do |method|
+  give_access = instance_methods
+  # See https://github.com/ruby/ostruct/issues/30
+  give_access -= %i[instance_exec instance_eval eval] if RUBY_ENGINE == 'jruby'
+  give_access.each do |method|
+    next if method.match(/\W$/)
+
     new_name = "#{method}!"
     alias_method new_name, method
   end