Resolve error with code blocks in numbered lists (#3633)

app/labor/markdown_parser.rb

@@ -161,8 +161,8 @@ class MarkdownParser
 
   def escape_liquid_tags_in_codeblock(content)
     # Escape codeblocks, code spans, and inline code
-    content.gsub(/`{3}.*?`{3}|`{2}.+?`{2}|`{1}.+?`{1}/m) do |codeblock|
-      if codeblock[0..2] == "```"
+    content.gsub(/[[:space:]]*`{3}.*?`{3}|`{2}.+?`{2}|`{1}.+?`{1}/m) do |codeblock|
+      if codeblock.match?(/[[:space:]]*`{3}/)
         "\n{% raw %}\n" + codeblock + "\n{% endraw %}\n"
       else
         "{% raw %}" + codeblock + "{% endraw %}"

spec/labor/markdown_parser_spec.rb

@@ -17,6 +17,18 @@ RSpec.describe MarkdownParser do
     expect(generate_and_parse_markdown(code_block)).to include("{% what %}")
   end
 
+  it "escapes codeblocks in numbered lists" do
+    code_block = "1. Define your hooks in config file `lefthook.yml`\n
+    ```yaml
+     pre-push:\n        parallel: true\n        commands:\n        rubocop:
+     run: bundle exec rspec --fail-fast\n
+    ```"
+    escaped_codeblock = generate_and_parse_markdown(code_block)
+    expect(escaped_codeblock).not_to include("```")
+    expect(escaped_codeblock).not_to include("`")
+    expect(escaped_codeblock).to include("bundle exec rspec --fail-fast")
+  end
+
   it "escapes liquid tags in code spans" do
     code_span = "``{% what %}``"
     expect(generate_and_parse_markdown(code_span)).to include("{% what %}")

spec/support/fixtures/approvals/user_preview_article_body.approved.html

@@ -96,9 +96,7 @@ Format: <a href="cloudinary_link"></a></p>
 the present is our past.</p>
 </blockquote>
 
-<p>I think you should use an <code>&lt;addr&gt;</code> element here instead.</p>
-
-
+<p>I think you should use an <code>&lt;addr&gt;</code> element here instead.<br /></p>
 
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