fails(JRUBY-4869):Signal.trap ignores the signal when passed nil
fails(JRUBY-4869):Signal.trap accepts 'SIG_DFL' in place of a proc
fails(JRUBY-4869):Signal.trap accepts 'DEFAULT' in place of a proc
fails(JRUBY-4869):Signal.trap accepts 'SIG_IGN' in place of a proc
fails(JRUBY-4869):Signal.trap accepts 'IGNORE' in place of a proc
windows(http://rubyspec.org/issues/show/228):Signal.trap returns the previous handler
windows(http://rubyspec.org/issues/show/228):Signal.trap accepts a block in place of a proc/command argument
windows(http://rubyspec.org/issues/show/228):Signal.trap accepts long names as Strings
windows(http://rubyspec.org/issues/show/228):Signal.trap acceps short names as Strings
windows(http://rubyspec.org/issues/show/228):Signal.trap accepts long names as Symbols
windows(http://rubyspec.org/issues/show/228):Signal.trap accepts short names as Symbols
fails:Signal.trap ignores the signal when passed nil
fails:Signal.trap accepts 'SIG_DFL' in place of a proc
fails:Signal.trap accepts 'DEFAULT' in place of a proc
fails:Signal.trap accepts 'SIG_IGN' in place of a proc
fails:Signal.trap accepts 'IGNORE' in place of a proc
