[ruby/irb] This enhancement allows a user to add the -s flag if they

want to access a methods origin definition.  It allows for chaining
of multiple esses to further go up the classes as needed.
(https://github.com/ruby/irb/pull/770)

https://github.com/ruby/irb/commit/eec1329d5a

1 files changed, 9 insertions, 2 deletions

diff --git a/lib/irb/cmd/show_source.rb b/lib/irb/cmd/show_source.rb
index 49cab43fab..9a0364e3eb 100644
--- a/lib/irb/cmd/show_source.rb
+++ b/lib/irb/cmd/show_source.rb
@@ -27,11 +27,18 @@ module IRB
           puts "Error: Expected a string but got #{str.inspect}"
           return
         end
-
-        source = SourceFinder.new(@irb_context).find_source(str)
+        if str.include? " -s"
+          str, esses = str.split(" -")
+          s_count = esses.count("^s").zero? ? esses.size : 1
+          source = SourceFinder.new(@irb_context).find_source(str, s_count)
+        else
+          source = SourceFinder.new(@irb_context).find_source(str)
+        end
 
         if source
           show_source(source)
+        elsif s_count
+          puts "Error: Couldn't locate a super definition for #{str}"
         else
           puts "Error: Couldn't locate a definition for #{str}"
         end