Ruby 2.5 is unsupported. Use Ruby 2.6 or newer

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby: ['2.7', '2.6', '2.5']
+        ruby: ['2.7', '2.6']
         redmine: ['4.1-stable', '4.2-stable', 'master']
         db: ['postgres', 'mysql']
         exclude:

.rubocop.yml

@@ -6,7 +6,7 @@ Rails:
   Enabled: true
 
 AllCops:
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 2.6
   TargetRailsVersion: 5.2
   NewCops: enable
 

CHANGELOG.rst

@@ -6,6 +6,7 @@ Changelog
 
 - Mermaid 8.13.3 support
 - D3 7.1.1 support
+- Ruby 2.6 is required
 
 3.0.3
 +++++

additionals.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
 
   spec.files         = Dir['**/*'] - Dir['test/**/*'] - Dir['Gemfile', 'Gemfile.lock', 'README.rst']
   spec.require_paths = ['lib']
-  spec.required_ruby_version = '>= 2.5'
+  spec.required_ruby_version = '>= 2.6'
 
   spec.add_runtime_dependency 'deface', '1.8.1'
   spec.add_runtime_dependency 'gemoji', '~> 3.0.0'

docs/index.rst

@@ -37,7 +37,7 @@ Requirements
 +--------------------+-----------------------------------+
 | `Redmine`_ version | >= 4.1.0                          |
 +--------------------+-----------------------------------+
-| `Ruby`_ version    | >= 2.5.0                          |
+| `Ruby`_ version    | >= 2.6                          |
 +--------------------+-----------------------------------+
 | Database version   | MySQL >= 5.7 or PostgreSQL >= 9.6 |
 +--------------------+-----------------------------------+

lib/additionals/wiki_macros/reddit_macro.rb

@@ -21,7 +21,7 @@ module Additionals
                   title: l(:label_reddit_subject)
         when 'u/'
           link_to font_awesome_icon('fab_reddit-square', post_text: name),
-                  "https://www.reddit.com/username/#{name[2..-1]}",
+                  "https://www.reddit.com/username/#{name[2..]}",
                   class: 'external reddit',
                   title: l(:label_reddit_user_account)
         else

lib/additionals/wiki_macros/redmine_wiki_macro.rb

@@ -19,7 +19,7 @@ module Additionals
           start_pos = raw_link.index 'redmine.org/projects/redmine/wiki/'
           raise 'The correct usage is {{redmine_wiki(<page>)}}' if start_pos.nil? || start_pos.zero?
 
-          options[:name] = raw_link[(start_pos + 34)..-1] if options[:name].blank?
+          options[:name] = raw_link[(start_pos + 34)..] if options[:name].blank?
           link = raw_link.gsub 'http://', 'https://'
         elsif /\w/.match?(raw_link[0])
           options[:name] = raw_link if options[:name].blank?

lib/additionals/wiki_macros/twitter_macro.rb

@@ -15,12 +15,12 @@ module Additionals
         case name[0]
         when '@'
           link_to(font_awesome_icon('fab_twitter', post_text: name),
-                  "https://twitter.com/#{name[1..-1]}",
+                  "https://twitter.com/#{name[1..]}",
                   class: 'external twitter',
                   title: l(:label_twitter_account))
         when '#'
           link_to(font_awesome_icon('fab_twitter-square', post_text: name),
-                  "https://twitter.com/hashtag/#{name[1..-1]}",
+                  "https://twitter.com/hashtag/#{name[1..]}",
                   class: 'external twitter',
                   title: l(:label_twitter_hashtag))
         else