From 559dca509d2a98584b09c7d9a6d74749ce793ad7 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Sun, 28 Apr 2019 07:47:33 +0900
Subject: Show documents when completion

---
 lib/irb/completion.rb | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'lib/irb/completion.rb')

diff --git a/lib/irb/completion.rb b/lib/irb/completion.rb
index 289180a3b2..573f2ed3e6 100644
--- a/lib/irb/completion.rb
+++ b/lib/irb/completion.rb
@@ -8,6 +8,7 @@
 #
 
 require "readline"
+require "rdoc"
 
 module IRB
   module InputCompletor # :nodoc:
@@ -197,6 +198,14 @@ module IRB
       end
     }
 
+    RDocRIDriver = RDoc::RI::Driver.new
+    PerfectMatchedProc = proc { |matched|
+      begin
+        RDocRIDriver.display_name(matched)
+      rescue RDoc::RI::Driver::NotFoundError
+      end
+    }
+
     # Set of available operators in Ruby
     Operators = %w[% & * ** + - / < << <= <=> == === =~ > >= >> [] []= ^ ! != !~]
 
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