Allow to override the inverse name

Author: xjunior

lib/thor/parser/option.rb

@@ -82,14 +82,7 @@ def human_name
     end
 
     def usage(padding = 0)
-      sample = if banner && !banner.to_s.empty?
-        "#{switch_name}=#{banner}".dup
-      else
-        switch_name
-      end
-
-      sample = "[#{sample}]".dup unless required?
-      sample << ", [#{dasherize('no-' + human_name)}]" if inverse?
+      sample = [ sample_banner, inverse_sample ].compact.join(", ")
 
       if aliases.empty?
         (" " * padding) << sample
@@ -98,11 +91,6 @@ def usage(padding = 0)
       end
     end
 
-    def inverse?
-      return false if (name == "force") || name.start_with?("no-")
-      boolean? && @inverse.nil? || @inverse.eql?(true)
-    end
-
     VALID_TYPES.each do |type|
       class_eval <<-RUBY, __FILE__, __LINE__ + 1
         def #{type}?
@@ -113,6 +101,26 @@ def #{type}?
 
   protected
 
+    def sample_banner
+      sample_banner = if banner && !banner.to_s.empty?
+                        "#{switch_name}=#{banner}".dup
+                      else
+                        switch_name
+                      end
+      required? ? sample_banner : "[#{sample_banner}]"
+    end
+
+    def inverse_sample
+      return unless boolean? && name !~ /^(force|no-.*)$/
+
+      case @inverse
+      when Symbol, String
+        "[#{dasherize(@inverse.to_s)}]"
+      when nil, true
+        "[#{dasherize('no-' + human_name)}]"
+      end
+    end
+
     def validate!
       raise ArgumentError, "An option cannot be boolean and required." if boolean? && required?
       validate_default_type!

spec/parser/option_spec.rb

@@ -123,6 +123,10 @@ def option(name, options = {})
     expect(option("bar", type: :boolean, :inverse => false).usage).to_not include("[--no-bar]")
   end
 
+  it "allow to override the inverse option" do
+    expect(option("colorful", type: :boolean, :inverse => :monochromatic).usage).to include("[--monochromatic]")
+  end
+
   it "creates the inversion flag by default" do
     expect(option("bar", type: :boolean).usage).to include("[--no-bar]")
   end