do not use RawDescriptionHelpFormatter by default

test/test_help.py

@@ -1,6 +1,7 @@
 from io import StringIO
 from contextlib import redirect_stdout, redirect_stderr
 import pytest
+from argparse import RawDescriptionHelpFormatter
 
 
 from tiramisu_cmdline_parser import TiramisuCmdlineParser
@@ -64,11 +65,31 @@ od:
 
   {str,list,int,none}  choice the sub argument
 
-two
-line
+two line
 """
     parser = TiramisuCmdlineParser(get_config(json), 'prog.py', epilog="\ntwo\nline")
     f = StringIO()
     with redirect_stdout(f):
         parser.print_help()
     assert f.getvalue() == output
+
+
+def test_help_epilog_raw(json):
+    output = """usage: prog.py [-h] {str,list,int,none}
+
+optional arguments:
+  -h, --help           show this help message and exit
+
+od:
+  od
+
+  {str,list,int,none}  choice the sub argument
+
+two
+line
+"""
+    parser = TiramisuCmdlineParser(get_config(json), 'prog.py', epilog="\ntwo\nline", formatter_class=RawDescriptionHelpFormatter)
+    f = StringIO()
+    with redirect_stdout(f):
+        parser.print_help()
+    assert f.getvalue() == output