Automagically remove -cmd suffix

Library/Homebrew/abstract_command.rb

@@ -17,7 +17,7 @@ module Homebrew
 
     class << self
       sig { returns(String) }
-      def command_name = Utils.underscore(T.must(name).split("::").fetch(-1)).tr("_", "-")
+      def command_name = Utils.underscore(T.must(name).split("::").fetch(-1)).tr("_", "-").delete_suffix("-cmd")
 
       # @return the AbstractCommand subclass associated with the brew CLI command name.
       sig { params(name: String).returns(T.nilable(T.class_of(AbstractCommand))) }

Library/Homebrew/dev-cmd/formula.rb

@@ -8,9 +8,6 @@ require "cli/parser"
 module Homebrew
   module DevCmd
     class FormulaCmd < AbstractCommand
-      sig { returns(String) }
-      def self.command_name = "formula"
-
       cmd_args do
         description <<~EOS
           Display the path where <formula> is located.

Library/Homebrew/dev-cmd/livecheck.rb

@@ -10,9 +10,6 @@ require "livecheck/strategy"
 module Homebrew
   module DevCmd
     class LivecheckCmd < AbstractCommand
-      sig { returns(String) }
-      def self.command_name = "livecheck"
-
       cmd_args do
         description <<~EOS
           Check for newer versions of formulae and/or casks from upstream.

Library/Homebrew/test/abstract_command_spec.rb

@@ -39,6 +39,11 @@ RSpec.describe Homebrew::AbstractCommand do
         expect(described_class.command("test-cat")).to be(TestCat)
       end
 
+      it "removes -cmd suffix from command name" do
+        require "dev-cmd/formula"
+        expect(Homebrew::DevCmd::FormulaCmd.command_name).to eq("formula")
+      end
+
       describe "when command name is overridden" do
         before do
           tac = Class.new(described_class) do