Don't normalize URLs in toots (#6134)

* Don't normalize URLs in toots

URL normalization is ill-defined and may cause certain links to break.

* Change specs since we are not normalizing user-provided URLs

app/lib/formatter.rb

@@ -171,10 +171,10 @@ class Formatter
   end
 
   def link_to_url(entity)
-    normalized_url = Addressable::URI.parse(entity[:url]).normalize
-    html_attrs     = { target: '_blank', rel: 'nofollow noopener' }
+    url        = Addressable::URI.parse(entity[:url])
+    html_attrs = { target: '_blank', rel: 'nofollow noopener' }
 
-    Twitter::Autolink.send(:link_to_text, entity, link_html(entity[:url]), normalized_url, html_attrs)
+    Twitter::Autolink.send(:link_to_text, entity, link_html(entity[:url]), url, html_attrs)
   rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
     encode(entity[:url])
   end

spec/lib/formatter_spec.rb

@@ -17,7 +17,7 @@ RSpec.describe Formatter do
       let(:text) { 'http://google.com' }
 
       it 'has valid URL' do
-        is_expected.to include 'href="http://google.com/"'
+        is_expected.to include 'href="http://google.com"'
       end
     end
 
@@ -25,7 +25,7 @@ RSpec.describe Formatter do
       let(:text) { 'https://nic.みんな/' }
 
       it 'has valid URL' do
-        is_expected.to include 'href="https://nic.xn--q9jyb4c/"'
+        is_expected.to include 'href="https://nic.みんな/"'
       end
 
       it 'has display URL' do
@@ -53,7 +53,7 @@ RSpec.describe Formatter do
       let(:text) { 'http://www.google.com!' }
 
       it 'has valid URL' do
-        is_expected.to include 'href="http://www.google.com/"'
+        is_expected.to include 'href="http://www.google.com"'
       end
     end
 
@@ -61,7 +61,7 @@ RSpec.describe Formatter do
       let(:text) { "http://www.google.com'" }
 
       it 'has valid URL' do
-        is_expected.to include 'href="http://www.google.com/"'
+        is_expected.to include 'href="http://www.google.com"'
       end
     end
 
@@ -69,7 +69,7 @@ RSpec.describe Formatter do
       let(:text) { 'http://www.google.com>' }
 
       it 'has valid URL' do
-        is_expected.to include 'href="http://www.google.com/"'
+        is_expected.to include 'href="http://www.google.com"'
       end
     end
 
@@ -93,7 +93,7 @@ RSpec.describe Formatter do
       let(:text) { 'https://ja.wikipedia.org/wiki/日本' }
 
       it 'has valid URL' do
-        is_expected.to include 'href="https://ja.wikipedia.org/wiki/%E6%97%A5%E6%9C%AC"'
+        is_expected.to include 'href="https://ja.wikipedia.org/wiki/日本"'
       end
     end
 
@@ -101,7 +101,7 @@ RSpec.describe Formatter do
       let(:text) { 'https://ko.wikipedia.org/wiki/대한민국' }
 
       it 'has valid URL' do
-        is_expected.to include 'href="https://ko.wikipedia.org/wiki/%EB%8C%80%ED%95%9C%EB%AF%BC%EA%B5%AD"'
+        is_expected.to include 'href="https://ko.wikipedia.org/wiki/대한민국"'
       end
     end
 
@@ -109,7 +109,7 @@ RSpec.describe Formatter do
       let(:text) { 'https://baike.baidu.com/item/中华人民共和国' }
 
       it 'has valid URL' do
-        is_expected.to include 'href="https://baike.baidu.com/item/%E4%B8%AD%E5%8D%8E%E4%BA%BA%E6%B0%91%E5%85%B1%E5%92%8C%E5%9B%BD"'
+        is_expected.to include 'href="https://baike.baidu.com/item/中华人民共和国"'
       end
     end
 
@@ -117,7 +117,7 @@ RSpec.describe Formatter do
       let(:text) { 'https://zh.wikipedia.org/wiki/臺灣' }
 
       it 'has valid URL' do
-        is_expected.to include 'href="https://zh.wikipedia.org/wiki/%E8%87%BA%E7%81%A3"'
+        is_expected.to include 'href="https://zh.wikipedia.org/wiki/臺灣"'
       end
     end