defaults.rb in cmds-0.2.11

- old
+ new

@@ -1,7 +1,10 @@
+# encoding: UTF-8
 # frozen_string_literal: true
 
+require 'active_support/core_ext/object/deep_dup'
+
 class Cmds
   # hash of common default values used in method options.
   # 
   # don't use them directly -- use {Cmds.defaults}.
   # 
@@ -30,10 +33,15 @@
     assert: false,
     
     # Don't change directories
     chdir: nil,
     
+    # Commands often use dash-separated option names, but it's a lot more
+    # convenient in Ruby to use underscored when using {Symbol}. This option
+    # will convert the underscores to dashes.
+    dash_opt_names: false,
+    
     # No additional environment
     env: {},
     
     # Stick ENV var defs inline at beginning of command
     env_mode: :inline,
@@ -95,10 +103,10 @@
   # @return [Hash<Symbol, Object>]
   #   defaults to use in the method call.
   #   
   def self.defaults opts, keys = '*', extras = {}
     if keys == '*'
-      DEFAULTS.dup
+      DEFAULTS.deep_dup
     else
       keys.
         map {|key|
           [key, DEFAULTS.fetch(key)]
         }.