Fix multi-line syntax highlighting

HTML span elements only apply to a single line, and in the case of multi-line
comments, the highlighting was dropped as a result. Ensure that each line has
the proper styling to fix this.

Closes #1577

1 files changed, 18 insertions, 0 deletions

diff --git a/spec/helpers/blob_helper_spec.rb b/spec/helpers/blob_helper_spec.rb
index e49e4e6d5d8..76009c36099 100644
--- a/spec/helpers/blob_helper_spec.rb
+++ b/spec/helpers/blob_helper_spec.rb
@@ -6,6 +6,14 @@ describe BlobHelper do
     let(:no_context_content) { ":type \"assem\"))" }
     let(:blob_content) { "(make-pathname :defaults name\n#{no_context_content}" }
     let(:split_content) { blob_content.split("\n") }
+    let(:multiline_content) do
+      %q(
+      def test(input):
+        """This is line 1 of a multi-line comment.
+        This is line 2.
+        """
+      )
+    end
 
     it 'should return plaintext for unknown lexer context' do
       result = highlight(blob_name, no_context_content, nowrap: true, continue: false)
@@ -29,5 +37,15 @@ describe BlobHelper do
       result = split_content.map{ |content| highlight(blob_name, content, nowrap: true, continue: true) }
       expect(result).to eq(expected)
     end
+
+    it 'should highlight multi-line comments' do
+      result = highlight(blob_name, multiline_content, nowrap: true, continue: false)
+      html = Nokogiri::HTML(result)
+      lines = html.search('.s')
+      expect(lines.count).to eq(3)
+      expect(lines[0].text).to eq('"""This is line 1 of a multi-line comment.')
+      expect(lines[1].text).to eq('        This is line 2.')
+      expect(lines[2].text).to eq('        """')
+    end
   end
 end