Update clearer terminologies

Deprecate Pry.config.exception_whitelist,
use Pry.config.unrescued_exceptions instead.

Deprecate  Pry::DEFAULT_EXCEPTION_WHITELIST,
use Pry::DEFAULT_UNRESCUED_EXCEPTIONS instead.

What white / black means are not clear,
use clearer terminologies.

.rubocop_todo.yml

@@ -430,7 +430,7 @@ Layout/SpaceInsideStringInterpolation:
 # SupportedStyles: final_newline, final_blank_line
 Layout/TrailingBlankLines:
   Exclude:
-    - 'spec/exception_whitelist_spec.rb'
+    - 'spec/unrescued_exceptions_spec.rb'
 
 # Offense count: 13
 # Cop supports --auto-correct.

lib/pry/config/default.rb

@@ -32,8 +32,12 @@ class Pry
         exception_handler: proc {
           Pry::DEFAULT_EXCEPTION_HANDLER
         },
+        unrescued_exceptions: proc {
+          Pry::DEFAULT_UNRESCUED_EXCEPTIONS
+        },
         exception_whitelist: proc {
-          Pry::DEFAULT_EXCEPTION_WHITELIST
+          warn 'Pry.config.exception_whitelist is deprecated, please use Pry.config.unrescued_exceptions instead.'
+          Pry::DEFAULT_UNRESCUED_EXCEPTIONS
         },
         hooks: proc {
           Pry::DEFAULT_HOOKS

lib/pry/exceptions.rb

@@ -13,7 +13,7 @@ class Pry
         # Don't catch signals (particularly not SIGTERM) as these are unlikely
         # to be intended for pry itself. We should also make sure that
         # Kernel#exit works.
-      when *Pry.config.exception_whitelist
+      when *Pry.config.unrescued_exceptions
         false
         # All other exceptions will be caught.
       else
@@ -57,9 +57,15 @@ class Pry
   end
 
   # Don't catch these exceptions
-  DEFAULT_EXCEPTION_WHITELIST = [SystemExit,
-                                 SignalException,
-                                 Pry::TooSafeException]
+  DEFAULT_UNRESCUED_EXCEPTIONS = [SystemExit,
+                                  SignalException,
+                                  Pry::TooSafeException]
+  DEFAULT_EXCEPTION_WHITELIST = DEFAULT_UNRESCUED_EXCEPTIONS
+  if Object.respond_to?(:deprecate_constant)
+    deprecate_constant :DEFAULT_EXCEPTION_WHITELIST
+  else
+    warn('DEFAULT_EXCEPTION_WHITELIST is deprecated and will be removed in a future version of Pry. Please use DEFAULT_UNRESCUED_EXCEPTIONS instead.')
+  end
 
   # CommandErrors are caught by the REPL loop and displayed to the user. They
   # indicate an exceptional condition that's fatal to the current command.

lib/pry/pry_instance.rb

@@ -310,7 +310,7 @@ class Pry
       # as an additional exception to be rescued explicitly.
       #
       # This workaround has a side effect: java exceptions specified
-      # in `Pry.config.exception_whitelist` are ignored.
+      # in `Pry.config.unrescued_exceptions` are ignored.
       jruby_exceptions = []
       if Helpers::Platform.jruby?
         jruby_exceptions << Java::JavaLang::Exception

spec/completion_spec.rb

@@ -213,7 +213,7 @@ describe Pry::InputCompleter do
     completer_test(self).call("[].size.chars")
   end
 
-  it 'does not offer methods from blacklisted modules' do
+  it 'does not offer methods from restricted modules' do
     require 'irb'
     completer_test(self, nil, false).call("[].size.parse_printf_format")
   end

spec/exception_whitelist_spec.rb

@@ -1,21 +0,0 @@
-require_relative 'helper'
-
-describe "Pry.config.exception_whitelist" do
-  before do
-    @str_output = StringIO.new
-  end
-
-  it 'should rescue all exceptions NOT specified on whitelist' do
-    expect(Pry.config.exception_whitelist.include?(NameError)).to eq false
-    expect { Pry.start(self, input: StringIO.new("raise NameError\nexit"), output: @str_output) }.not_to raise_error
-  end
-
-  it 'should NOT rescue exceptions specified on whitelist' do
-    old_whitelist = Pry.config.exception_whitelist
-    Pry.config.exception_whitelist = [NameError]
-    expect { Pry.start(self, input: StringIO.new("raise NameError"), output: @str_output) }.to raise_error NameError
-    Pry.config.exception_whitelist = old_whitelist
-  end
-end
-
-

spec/hooks_spec.rb

@@ -366,8 +366,8 @@ describe Pry::Hooks do
         o = Pry::Config.new
         o.great_escape = Class.new(StandardError)
 
-        old_ew = Pry.config.exception_whitelist
-        Pry.config.exception_whitelist << o.great_escape
+        old_ew = Pry.config.unrescued_exceptions
+        Pry.config.unrescued_exceptions << o.great_escape
 
         array = [1, 2, 3, 4, 5]
 
@@ -387,7 +387,7 @@ describe Pry::Hooks do
         expect(array).to eq nil
 
         # cleanup after test
-        Pry.config.exception_whitelist = old_ew
+        Pry.config.unrescued_exceptions = old_ew
       end
 
       describe "before_eval hook" do

spec/unrescued_exceptions_spec.rb

@@ -0,0 +1,19 @@
+require_relative 'helper'
+
+describe "Pry.config.unrescued_exceptions" do
+  before do
+    @str_output = StringIO.new
+  end
+
+  it 'should rescue all exceptions NOT specified on unrescued_exceptions' do
+    expect(Pry.config.unrescued_exceptions.include?(NameError)).to eq false
+    expect { Pry.start(self, input: StringIO.new("raise NameError\nexit"), output: @str_output) }.not_to raise_error
+  end
+
+  it 'should NOT rescue exceptions specified on unrescued_exceptions' do
+    old_allowlist = Pry.config.unrescued_exceptions
+    Pry.config.unrescued_exceptions = [NameError]
+    expect { Pry.start(self, input: StringIO.new("raise NameError"), output: @str_output) }.to raise_error NameError
+    Pry.config.unrescued_exceptions = old_allowlist
+  end
+end