Respect parent command line arguments in nested IRB scopes

lib/irb.rb

@@ -1513,8 +1513,8 @@ class Binding
   #
   # See IRB for more information.
   def irb(show_code: true)
-    # Setup IRB with the current file's path and no command line arguments
-    IRB.setup(source_location[0], argv: [])
+    # Setup IRB with the current file's path and current session command line arguments
+    IRB.setup(source_location[0], argv: IRB.conf[:ARGV])
     # Create a new workspace using the current binding
     workspace = IRB::WorkSpace.new(self)
     # Print the code around the binding if show_code is true

lib/irb/init.rb

@@ -43,9 +43,9 @@ def IRB.version
 
   # initialize config
   def IRB.setup(ap_path, argv: ::ARGV)
-    IRB.init_config(ap_path)
+    IRB.init_config(ap_path, argv: argv)
     IRB.init_error
-    IRB.parse_opts(argv: argv)
+    IRB.parse_opts
     IRB.run_config
     IRB.load_modules
 
@@ -55,7 +55,7 @@ def IRB.setup(ap_path, argv: ::ARGV)
   end
 
   # @CONF default setting
-  def IRB.init_config(ap_path)
+  def IRB.init_config(ap_path, argv: ::ARGV)
     # class instance variables
     @TRACER_INITIALIZED = false
 
@@ -68,6 +68,7 @@ def IRB.init_config(ap_path)
 
     @CONF[:IRB_NAME] = "irb"
     @CONF[:IRB_LIB_PATH] = File.dirname(__FILE__)
+    @CONF[:ARGV] = argv.dup
 
     @CONF[:RC] = true
     @CONF[:LOAD_MODULES] = []
@@ -244,7 +245,8 @@ def IRB.init_error
   end
 
   # option analyzing
-  def IRB.parse_opts(argv: ::ARGV)
+  def IRB.parse_opts
+    argv = @CONF[:ARGV].dup || []
     load_path = []
     while opt = argv.shift
       case opt

lib/irb/workspace.rb

@@ -112,7 +112,7 @@ def load_commands_to_main
       main.extend ExtendCommandBundle
     end
 
-    # Evaluate the given +statements+ within the  context of this workspace.
+    # Evaluate the given +statements+ within the context of this workspace.
     def evaluate(statements, file = __FILE__, line = __LINE__)
       eval(statements, @binding, file, line)
     end