bump-formula|cask-pr: do not allow to bump autobumped packages

Avoids:
- Bumping stuff by mistake that will get autobumped anyway
- Abusing the system to get "free" commits

Library/Homebrew/dev-cmd/bump-cask-pr.rb

@@ -89,6 +89,20 @@ module Homebrew
     odie "This cask is not in a tap!" if cask.tap.blank?
     odie "This cask's tap is not a Git repository!" unless cask.tap.git?
 
+    if ENV.fetch("HOMEBREW_TEST_BOT_AUTOBUMP", false).blank? &&
+       (cask.tap.core_cask_tap? &&
+       (autobump_file_path = cask.tap.path/Tap::HOMEBREW_TAP_AUTOBUMP_FILE) &&
+       autobump_file_path.exist? &&
+       autobump_file_path.readlines(chomp: true).include?(cask.token))
+      odie <<~EOS
+        Whoops, the #{cask.token} cask has its version update
+        pull requests automatically opened by BrewTestBot!
+        We'd still love your contributions, though, so try another one
+        that's not in the autobump list:
+          #{Formatter.url("#{cask.tap.remote}/blob/master/.github/autobump.txt")}
+      EOS
+    end
+
     new_version = BumpVersionParser.new(
       general: args.version,
       intel:   args.version_intel,

Library/Homebrew/dev-cmd/bump-formula-pr.rb

@@ -112,6 +112,20 @@ module Homebrew
     odie "This formula is not in a tap!" if formula.tap.blank?
     odie "This formula's tap is not a Git repository!" unless formula.tap.git?
 
+    if ENV.fetch("HOMEBREW_TEST_BOT_AUTOBUMP", nil).blank? &&
+       (formula.tap.core_tap? &&
+       (autobump_file_path = formula.tap.path/Tap::HOMEBREW_TAP_AUTOBUMP_FILE) &&
+       autobump_file_path.exist? &&
+       autobump_file_path.readlines(chomp: true).include?(formula.name))
+      odie <<~EOS
+        Whoops, the #{formula.name} formula has its version update
+        pull requests automatically opened by BrewTestBot!
+        We'd still love your contributions, though, so try another one
+        that's not in the autobump list:
+          #{Formatter.url("#{formula.tap.remote}/blob/master/.github/autobump.txt")}
+      EOS
+    end
+
     formula_spec = formula.stable
     odie "#{formula}: no stable specification found!" if formula_spec.blank?
 

Library/Homebrew/tap.rb

@@ -21,6 +21,7 @@ class Tap
   HOMEBREW_TAP_CASK_RENAMES_FILE = "cask_renames.json"
   HOMEBREW_TAP_FORMULA_RENAMES_FILE = "formula_renames.json"
   HOMEBREW_TAP_MIGRATIONS_FILE = "tap_migrations.json"
+  HOMEBREW_TAP_AUTOBUMP_FILE = ".github/autobump.txt"
   HOMEBREW_TAP_AUDIT_EXCEPTIONS_DIR = "audit_exceptions"
   HOMEBREW_TAP_STYLE_EXCEPTIONS_DIR = "style_exceptions"
   HOMEBREW_TAP_PYPI_FORMULA_MAPPINGS = "pypi_formula_mappings.json"