diff --git a/HISTORY.rst b/HISTORY.rst
index b9ca0d856..713faa95e 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -5,9 +5,15 @@
 History
 =======
 
-current - 2018-12-09 - 0.00Mb
+current - 2018-12-10 - 0.00Mb
 =============================
 
+* `213`: removes cmdref from documentation when creating a parser for a function (2018-12-10)
+* `212`: issue when the default value is None when building the parser for a specific function (2018-12-09)
+
+1.8.2884 - 2018-12-09 - 2.03Mb
+==============================
+
 * `211`: automatically git tag when publishing (2018-12-05)
 * `210`: add __main__ command line (2018-11-29)
 
diff --git a/src/pyquickhelper/cli/cli_helper.py b/src/pyquickhelper/cli/cli_helper.py
index 8b0fd65de..1ecf846c2 100644
--- a/src/pyquickhelper/cli/cli_helper.py
+++ b/src/pyquickhelper/cli/cli_helper.py
@@ -19,8 +19,12 @@ def clean_documentation_for_cli(doc, cleandoc):
     @param      cleandoc    a string which tells how to clean,
                             or a function which takes a function and
                             returns a string
+
+    The function removes everything after ``.. cmdref::`` and ``.. cmdreflist``
+    as it creates an infinite loop of processus if this command
+    is part of the documentation of the command line itself.
     """
-    for st in ('.. versionchanged::', '.. versionadded'):
+    for st in ('.. versionchanged::', '.. versionadded::', '.. cmdref::', '.. cmdreflist::'):
         if st in doc:
             doc = doc.split(st)[0]
     if isinstance(cleandoc, (list, tuple)):
@@ -64,7 +68,7 @@ def create_cli_parser(f, prog=None, layout="sphinx", skip_parameters=('fLOG',),
                                 richer requires :epkg:`sphinx`
     @param      skip_parameters do not expose these parameters
     @param      cleandoc        cleans the documentation before converting it into text,
-                                see @fn clean_documentation_for_cli
+                                @see fn clean_documentation_for_cli
     @param      options         additional :epkg:`Sphinx` options
     @return                     :epkg:`*py:argparse:ArgumentParser`
 
@@ -198,7 +202,7 @@ def call_cli_function(f, args=None, parser=None, fLOG=print, skip_parameters=('f
     @param      fLOG            logging function
     @param      skip_parameters see @see fn create_cli_parser
     @param      cleandoc        cleans the documentation before converting it into text,
-                                see @fn clean_documentation_for_cli
+                                @see fn clean_documentation_for_cli
     @param      options         additional :epkg:`Sphinx` options
 
     This function is used in command line @see fn pyq_sync.
@@ -333,6 +337,8 @@ def main(args, fLOG=print):
     .. cmdref::
         :title: Clean files
         :cmd: -m pyquickhelper clean_files --help
+
+        The command line cleans files in a folder.
     """
     if fLOG is None:
         raise ValueError("fLOG must be defined.")
diff --git a/src/pyquickhelper/sphinxext/sphinx_cmdref_extension.py b/src/pyquickhelper/sphinxext/sphinx_cmdref_extension.py
index d6c8e549c..7c3aa3277 100644
--- a/src/pyquickhelper/sphinxext/sphinx_cmdref_extension.py
+++ b/src/pyquickhelper/sphinxext/sphinx_cmdref_extension.py
@@ -138,7 +138,6 @@ def run(self):
                 fullname = fullname.strip()
                 name_cmd = name_cmd.strip()
 
-                #
                 fullname = "{0}.{1}".format(fullname, name_fct)
                 try:
                     obj, name = import_object(fullname, kind="function")