Merge pull request #366 from alphagov/stop-images-with-no-alt-being-w…

…rapped-in-links

Only wrap images with alt text in hyperlinks

CHANGELOG.md

@@ -15,6 +15,7 @@ You need to
 - Use hidden attribute to show/hide expiry notices instead of just CSS
 - Only use dialog role for table of contents when it behaves like one (accessibility fix)
 - Prevent interactive elements being obscured by sticky table of contents header
+- Only wrap images with alt text in hyperlinks
 
 ## 3.5.0
 

lib/govuk_tech_docs/tech_docs_html_renderer.rb

@@ -19,8 +19,12 @@ def header(text, level)
       %(<h#{level} id="#{anchor}">#{text}</h#{level}>\n)
     end
 
-    def image(link, *args)
-      %(<a href="#{link}" rel="noopener noreferrer">#{super}</a>)
+    def image(link, title, alt_text)
+      if alt_text && !alt_text.strip.empty?
+        %(<a href="#{link}" rel="noopener noreferrer">#{super}</a>)
+      else
+        super
+      end
     end
 
     def table(header, body)