Escape apostrophes in generated snippets

lib/cucumber/glue/snippet.rb

@@ -91,7 +91,7 @@ def typed_pattern
         def to_s
           header = generated_expressions.each_with_index.map do |expr, i|
             prefix = i.zero? ? '' : '# '
-            "#{prefix}#{code_keyword}('#{expr.source}') do#{parameters(expr)}"
+            "#{prefix}#{code_keyword}('#{escaped_expression_source(expr)}') do#{parameters(expr)}"
           end.join("\n")
 
           body = <<~DOC.chomp
@@ -108,6 +108,10 @@ def parameters(expr)
           parameter_names.empty? ? '' : " |#{parameter_names.join(', ')}|"
         end
 
+        def escaped_expression_source(expr)
+          expr.source.gsub(/['\\]/) { |char| "\\#{char}" }
+        end
+
         def self.description
           'Cucumber Expressions'
         end

spec/cucumber/glue/snippet_spec.rb

@@ -180,6 +180,17 @@ module Glue
 
           expect(snippet.to_s).to eq(cucumber_output)
         end
+
+        it 'escapes apostrophes in generated cucumber expression snippets' do
+          @step_text = "Lucy hears Sean's message"
+          cucumber_output = <<~CUKE.chomp
+            Given('Lucy hears Sean\\'s message') do
+              pending # Write code here that turns the phrase above into concrete actions
+            end
+          CUKE
+
+          expect(snippet.to_s).to eq(cucumber_output)
+        end
       end
     end
   end