1 files changed, 54 insertions, 0 deletions
diff --git a/lib/irb/command/edit.rb b/lib/irb/command/edit.rb
new file mode 100644
index 0000000000..1a8ded6bcf
--- /dev/null
+++ b/lib/irb/command/edit.rb
@@ -0,0 +1,54 @@
+require 'shellwords'
+
+require_relative "../source_finder"
+
+module IRB
+  # :stopdoc:
+
+  module Command
+    class Edit < Base
+      category "Misc"
+      description 'Open a file with the editor command defined with `ENV["VISUAL"]` or `ENV["EDITOR"]`.'
+
+      class << self
+        def transform_args(args)
+          # Return a string literal as is for backward compatibility
+          if args.nil? || args.empty? || string_literal?(args)
+            args
+          else # Otherwise, consider the input as a String for convenience
+            args.strip.dump
+          end
+        end
+      end
+
+      def execute(*args)
+        path = args.first
+
+        if path.nil?
+          path = @irb_context.irb_path
+        elsif !File.exist?(path)
+          source = SourceFinder.new(@irb_context).find_source(path)
+
+          if source&.file_exist? && !source.binary_file?
+            path = source.file
+          end
+        end
+
+        unless File.exist?(path)
+          puts "Can not find file: #{path}"
+          return
+        end
+
+        if editor = (ENV['VISUAL'] || ENV['EDITOR'])
+          puts "command: '#{editor}'"
+          puts "   path: #{path}"
+          system(*Shellwords.split(editor), path)
+        else
+          puts "Can not find editor setting: ENV['VISUAL'] or ENV['EDITOR']"
+        end
+      end
+    end
+  end
+
+  # :startdoc:
+end