Auto-restore docs

tasks/cut_release.rake

@@ -2,6 +2,11 @@
 
 require 'bump'
 
+def update_file(path)
+  content = File.read(path)
+  File.write(path, yield(content))
+end
+
 namespace :cut_release do
   %w[major minor patch pre].each do |release_type|
     desc "Cut a new #{release_type} release, create release notes " \
@@ -15,11 +20,6 @@ namespace :cut_release do
     version.split('.').take(2).join('.')
   end
 
-  def update_file(path)
-    content = File.read(path)
-    File.write(path, yield(content))
-  end
-
   def update_antora(version)
     update_file('docs/antora.yml') do |yaml|
       yaml.gsub(/version: .*/, "version: '#{version_sans_patch(version)}'")
@@ -49,3 +49,13 @@ namespace :cut_release do
     puts "Changed version from #{old_version} to #{new_version}."
   end
 end
+
+desc 'and restore docs/antora'
+task :release do
+  udpate_file 'docs/antora.yml' do |s|
+    s.gsub!(/version: .*/, 'version: master')
+  end
+  cmd = "git commit -am 'Restore docs/antora.yml'"
+  puts cmd
+  system cmd
+end