Allow searching Casks by name.

Library/Homebrew/cmd/search.rb

@@ -52,16 +52,17 @@ module Homebrew
       return
     end
 
-    if args.remaining.empty?
+    if args.remaining.empty? && !args.desc?
       puts Formatter.columns(Formula.full_names.sort)
-    elsif args.desc?
-      query = args.remaining.join(" ")
-      string_or_regex = query_regexp(query)
-      Descriptions.search(string_or_regex, :desc).print
-    else
+      return
+    end
+
     query = args.remaining.join(" ")
     string_or_regex = query_regexp(query)
 
+    if args.desc?
+      search_descriptions(string_or_regex)
+    else
       remote_results = search_taps(query, silent: true)
 
       local_formulae = search_formulae(string_or_regex)

Library/Homebrew/extend/os/mac/search.rb

@@ -3,6 +3,20 @@ require "hbc/cask_loader"
 
 module Homebrew
   module Search
+    module Extension
+      def search_descriptions(string_or_regex)
+        super
+
+        puts
+
+        ohai "Casks"
+        Hbc::Cask.to_a.extend(Searchable)
+                 .search(string_or_regex, &:name)
+                 .each do |cask|
+          puts "#{Tty.bold}#{cask.token}:#{Tty.reset} #{cask.name.join(", ")}"
+        end
+      end
+
       def search_casks(string_or_regex)
         if string_or_regex.is_a?(String) && string_or_regex.match?(HOMEBREW_TAP_CASK_REGEX)
           return begin
@@ -23,4 +37,7 @@ module Homebrew
         end
       end
     end
+
+    prepend Extension
+  end
 end

Library/Homebrew/search.rb

@@ -12,6 +12,11 @@ module Homebrew
       raise "#{query} is not a valid regex."
     end
 
+    def search_descriptions(string_or_regex)
+      ohai "Formulae"
+      Descriptions.search(string_or_regex, :desc).print
+    end
+
     def search_taps(query, silent: false)
       if query.match?(Regexp.union(HOMEBREW_TAP_FORMULA_REGEX, HOMEBREW_TAP_CASK_REGEX))
         _, _, query = query.split("/", 3)