Update version in config.yml via YAML load / dump

docs/_config.yml

@@ -1,60 +1,49 @@
+---
 sass:
   style: compressed
-
-version: 3.7.0 # latest version displayed in header
+version: 3.7.0
 gauges_id: 503c5af6613f5d0f19000027
 google_analytics_id: UA-50755011-1
 google_site_verification: onQcXpAvtHBrUI5LlroHNE_FP0b2qvFyPq7VZw36iEY
-
 repository: https://github.com/jekyll/jekyll
-
 timezone: America/Los_Angeles
-
 defaults:
-  -
-    scope:
-      path: "_docs"
-      type: "docs"
-    values:
-      layout: "docs"
-  -
-    scope:
-      path: "_posts"
-      type: "posts"
-    values:
-      layout: "news_item"
-      image: /img/twitter-card.png
-
+- scope:
+    path: _docs
+    type: docs
+  values:
+    layout: docs
+- scope:
+    path: _posts
+    type: posts
+  values:
+    layout: news_item
+    image: "/img/twitter-card.png"
 collections:
   docs:
-    permalink: /:collection/:path/
+    permalink: "/:collection/:path/"
     output: true
   posts:
-    permalink: /news/:year/:month/:day/:title/
+    permalink: "/news/:year/:month/:day/:title/"
     output: true
   tutorials:
     output: true
-
 name: Jekyll • Simple, blog-aware, static sites
 description: Transform your plain text into static websites and blogs
 url: https://jekyllrb.com
-
 twitter:
   username: jekyllrb
-
-logo: /img/logo-2x.png
-
+logo: "/img/logo-2x.png"
 plugins:
-  - jekyll-avatar
-  - jekyll-feed
-  - jekyll-mentions
-  - jekyll-redirect-from
-  - jekyll-seo-tag
-  - jekyll-sitemap
-  - jemoji
-
+- jekyll-avatar
+- jekyll-feed
+- jekyll-mentions
+- jekyll-redirect-from
+- jekyll-seo-tag
+- jekyll-sitemap
+- jemoji
 exclude:
-  - .gitignore
-  - CNAME
-  - icomoon-selection.json
-  - readme.md
+- ".gitignore"
+- CNAME
+- icomoon-selection.json
+- readme.md

rake/site.rake

@@ -87,9 +87,11 @@ namespace :site do
   desc "Write the latest Jekyll version"
   task :latest_version do
     return if version =~ %r!(beta|rc|alpha)!i
+    require "safe_yaml/load"
     config_file = File.join(docs_folder, "_config.yml")
-    contents = File.read(config_file)
-    File.write(config_file, contents.sub(%r!(?:version\s*:\s+)(.+)!, "version: #{version}"))
+    config = SafeYAML.load_file(config_file)
+    config["version"] = version
+    File.write(config_file, YAML.dump(config))
     File.open("#{docs_folder}/latest_version.txt", "wb") { |f| f.puts(version) }
   end