Attain Ruby 3.0 compatibility (jekyll#7948)

Merge pull request 7948

.rubocop.yml

@@ -108,6 +108,8 @@ Style/Alias:
   EnforcedStyle: prefer_alias_method
 Style/AndOr:
   Severity: error
+Style/BracesAroundHashParameters:
+  Enabled: false
 Style/ClassAndModuleChildren:
   Exclude:
     - test/**/*.rb

.travis.yml

@@ -19,7 +19,7 @@ matrix:
     - rvm: *ruby1
       env: TEST_SUITE=profile-docs
       name: "Profile Docs"
-    - rvm: *ruby1
+    - rvm: *ruby2
       env: TEST_SUITE=memprof
       name: "Profile Memory Allocation"
   exclude:

lib/jekyll/convertible.rb

@@ -39,7 +39,7 @@ def read_yaml(base, name, opts = {})
 
       begin
         self.content = File.read(@path || site.in_source_dir(base, name),
-                                 Utils.merged_file_read_opts(site, opts))
+                                 **Utils.merged_file_read_opts(site, opts))
         if content =~ Document::YAML_FRONT_MATTER_REGEXP
           self.content = $POSTMATCH
           self.data = SafeYAML.load(Regexp.last_match(1))

lib/jekyll/document.rb

@@ -298,7 +298,7 @@ def read(opts = {})
       else
         begin
           merge_defaults
-          read_content(opts)
+          read_content(**opts)
           read_post_data
         rescue StandardError => e
           handle_read_error(e)
@@ -429,14 +429,14 @@ def populate_categories
       categories.flatten!
       categories.uniq!
 
-      merge_data!("categories" => categories)
+      merge_data!({ "categories" => categories })
     end
 
     def populate_tags
       tags = Utils.pluralized_array_from_hash(data, "tag", "tags")
       tags.flatten!
 
-      merge_data!("tags" => tags)
+      merge_data!({ "tags" => tags })
     end
 
     private
@@ -462,8 +462,8 @@ def merge_defaults
       merge_data!(defaults, :source => "front matter defaults") unless defaults.empty?
     end
 
-    def read_content(opts)
-      self.content = File.read(path, Utils.merged_file_read_opts(site, opts))
+    def read_content(**opts)
+      self.content = File.read(path, **Utils.merged_file_read_opts(site, opts))
       if content =~ YAML_FRONT_MATTER_REGEXP
         self.content = $POSTMATCH
         data_file = SafeYAML.load(Regexp.last_match(1))

lib/jekyll/tags/include.rb

@@ -176,7 +176,7 @@ def realpath_prefixed_with?(path, dir)
 
       # This method allows to modify the file content by inheriting from the class.
       def read_file(file, context)
-        File.read(file, file_read_opts(context))
+        File.read(file, **file_read_opts(context))
       end
 
       private