Jekyllバージョンアップの際に思いのほか手こずった話 てっく煮さん製プラグインの更新に追従したい編

$ cd gosyujin.github.com
$ git submodule add http://github.com/nitoyon/tech.nitoyon.com.git _plugins/tech.nitoyon.com
Cloning into '_plugins/tech.nitoyon.com'...
remote: Counting objects: 15343, done.
remote: Compressing objects: 100% (4228/4228), done.
remote: Total 15343 (delta 5610), reused 14585 (delta 4852)
Receiving objects: 100% (15343/15343), 10.39 MiB | 623 KiB/s, done.
Resolving deltas: 100% (5610/5610), done.
warning: LF will be replaced by CRLF in .gitmodules.
The file will have its original line endings in your working directory.

$ git --version
git version 1.8.1.msysgit.1
$ git submodule add http://github.com/nitoyon/tech.nitoyon.com.git _plugins\tech.nitoyon.com
fatal: Could not switch to '.git/modules/_plugins\': No such file or directory
Clone of 'http://github.com/nitoyon/tech.nitoyon.com.git' into submodule path '_plugins\tech.nitoyon.com' failed

$ cd _plugins\tech.nitoyon.com\
$ ls -a
./                           _layouts/                    favicon.ico
../                          _plugins/                    images/
.git                         _posts/                      img/
.gitignore                   _scripts/                    index.cgi
.htaccess                    about.css                    ja/
Gruntfile.js*                apple-touch-icon-114x114.png javascripts/
README.markdown              apple-touch-icon-72x72.png   misc/
_caches/                     apple-touch-icon.png         package.json
_config.yml                  blog.cgi                     stylesheets/
_includes/                   en/                          techni.css
_lang/                       entry.cgi
$ git filter-branch --subdirectory-filter _plugins HEAD
Rewrite 942d387c8d9d2f43efe2301cae1abe5ac7e489de (61/61)
Ref 'refs/heads/master' was rewritten
$ ls
archives.rb* converters/  ext/         filters/     lang.rb*     tags/        tags.rb*

$ git clone http://github.com/gosyujin/tech.nitoyon.com.git

$ cd gosyujin.github.com
$ git submodule add http://github.com/gosyujin/tech.nitoyon.com.git _plugins/tech.nitoyon.com
$ git filter-branch --subdirectory-filter _plugins HEAD

gem 'jekyll', :git => 'http://github.com/mojombo/jekyll.git', :tag => 'v1.1.2'
gem 'pygments.rb', '=0.5.0'

  Generating... C:/work/gosyujin.github.com/_plugins/tech.nitoyon.com/ext/post_to_liquid_raw.rb:56:in `to_liquid': wrong number of arguments (1 for 0) (ArgumentError)
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/lib/jekyll/post.rb:255:in `render'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/lib/jekyll/site.rb:213:in `block in render'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/lib/jekyll/site.rb:212:in `each'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/lib/jekyll/site.rb:212:in `render'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/lib/jekyll/site.rb:44:in `process'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/lib/jekyll/command.rb:18:in `process_site'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/lib/jekyll/commands/build.rb:23:in `build'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/lib/jekyll/commands/build.rb:7:in `process'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/bundler/gems/jekyll-0db5dcf83217/bin/jekyll:96:in `block (2 levels) in <top (required)>'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/gems/commander-4.1.4/lib/commander/command.rb:180:in `call'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/gems/commander-4.1.4/lib/commander/command.rb:180:in `call'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/gems/commander-4.1.4/lib/commander/command.rb:155:in `run'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/gems/commander-4.1.4/lib/commander/runner.rb:402:in `run_active_command'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/gems/commander-4.1.4/lib/commander/runner.rb:78:in `run!'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/gems/commander-4.1.4/lib/commander/delegates.rb:11:in `run!'
      from C:/work/gosyujin.github.com/vendor/bundle/ruby/1.9.1/gems/commander-4.1.4/lib/commander/import.rb:10:in `block in <top (required)>'

    # add 'raw' attribute
    def to_liquid
      self.to_liquid_orig.deep_merge({
        "raw" => ToDrop.new(self)
      })
    end

$ cd C:\work\gosyujin.github.com\vendor\bundle\ruby\1.9.1\bundler\gems\jekyll-0db5dcf83217\lib\jekyll
$ git diff v1.1.0..v1.1.2 -- ./post.rb
diff --git a/lib/jekyll/post.rb b/lib/jekyll/post.rb
index 1b70e31..9ad2539 100644
--- a/lib/jekyll/post.rb
+++ b/lib/jekyll/post.rb
(略)
@@ -272,8 +275,8 @@ module Jekyll
     # Convert this post into a Hash for use in Liquid templates.
     #
     # Returns the representative Hash.
-    def to_liquid
-      further_data = Hash[ATTRIBUTES_FOR_LIQUID.map { |attribute|
+    def to_liquid(attrs = ATTRIBUTES_FOR_LIQUID)
+      further_data = Hash[attrs.map { |attribute|