brew 'info' will show info for cask if formula with same name does not exist

Library/Homebrew/cmd/info.rb

@@ -42,6 +42,10 @@ require "formula"
 require "keg"
 require "tab"
 require "json"
+require_relative "../cask/cmd/abstract_command"
+require_relative "../cask/cmd/info"
+require_relative "../cask/cask_loader"
+require_relative "../cask/installer"
 
 module Homebrew
   module_function
@@ -126,6 +130,11 @@ module Homebrew
           if (reason = MissingFormula.reason(f))
             $stderr.puts reason
           end
+          begin
+            ohai "Searching for a cask with the name \"#{f}\""
+            cask = Cask::CaskLoader.load(f)
+            Cask::Cmd::Info.info(cask)
+          end
         end
       end
     end

Library/Homebrew/test/cmd/info_spec.rb

@@ -18,6 +18,24 @@ describe "brew info", :integration_test do
       .and not_to_output.to_stderr
       .and be_a_success
   end
+
+  it "looks for a Cask with the same name if a given Formula does not exist" do
+    expect { brew "info", "basic-cask" }
+      .to output(/Searching for a cask with the name "basic-cask"/).to_stdout
+      .and output(/No available formula with the name "basic-cask"/).to_stderr
+  end
+
+  it "does not look for a Cask if a given Formula exists" do
+    RSpec::Matchers.define_negated_matcher :not_output, :output
+    expect { brew "info", "testball" }
+      .to not_output(/Searching for a cask with the name "testball"/).to_stdout
+      .and not_to_output.to_stderr
+  end
+
+  it "prints an error message if a given Cask does not exist" do
+    expect { brew "info", "non_existant_cask" }
+      .to output(/No Cask with this name exists./).to_stderr
+  end
 end
 
 describe Homebrew do