Preserve newlines and indentation in <pre> tags from RSS import (#10922)

app/lib/reverse_markdown/converters/custom_pre.rb

@@ -14,7 +14,7 @@ module ReverseMarkdown
 
       def treat(node, state)
         case node.name
-        when "code"
+        when "code", "text"
           node.text
         when "br"
           "\n"

spec/lib/reverse_markdown/converters/custom_pre_spec.rb

@@ -24,5 +24,11 @@ RSpec.describe ReverseMarkdown::Converters::CustomPre, type: :lib do
       result = create_custom_pre.convert(node)
       expect(result.split[0]).to eq("```html")
     end
+
+    it "preserves newlines and indentation" do
+      node = Nokogiri::HTML("<pre>def foo\n  puts 'Hello World'<br>end</pre>").search("pre")[0]
+      result = create_custom_pre.convert(node)
+      expect(result).to eq("\n```\ndef foo\n  puts 'Hello World'\nend\n```\n")
+    end
   end
 end