diff --git a/lib/lrama/new_lexer.rb b/lib/lrama/new_lexer.rb
index 02c0614c..18b746d2 100644
--- a/lib/lrama/new_lexer.rb
+++ b/lib/lrama/new_lexer.rb
@@ -127,9 +127,12 @@ def lex_c_code
           code += @scanner.matched
           newline
         when @scanner.scan(/"/)
-          matched = @scanner.scan_until(/"/)[0..-2]
-          code += %Q("#{matched}")
+          matched = @scanner.scan_until(/"/)
+          code += %Q("#{matched})
           @line += matched.count("\n")
+        when @scanner.scan(/'/)
+          matched = @scanner.scan_until(/'/)
+          code += %Q('#{matched})
         else
           code += @scanner.getch
         end
diff --git a/spec/lrama/new_parser_spec.rb b/spec/lrama/new_parser_spec.rb
index c5ecda4b..f61caae9 100644
--- a/spec/lrama/new_parser_spec.rb
+++ b/spec/lrama/new_parser_spec.rb
@@ -797,7 +797,7 @@ class : keyword_class { code 4 } tSTRING '?' keyword_end %prec tEQ { code 5 } {
     end
 
     describe "\" in user code" do
-      xit do
+      it do
         y = header + <<~INPUT
 %%
 
@@ -818,13 +818,13 @@ class : keyword_class
         expect(codes[0].s_value).to eq(<<-STR.chomp)
 
             func("}");
-
+        
         STR
       end
     end
 
     describe "' in user code" do
-      xit do
+      it do
         y = header + <<~INPUT
 %%
 
@@ -845,7 +845,7 @@ class : keyword_class
         expect(codes[0].s_value).to eq(<<-STR.chomp)
 
             func('}');
-
+        
         STR
       end
     end