--- a/libervia/backend/plugins/plugin_misc_text_syntaxes.py	Tue Jun 18 12:06:45 2024 +0200
+++ b/libervia/backend/plugins/plugin_misc_text_syntaxes.py	Wed Jun 19 18:44:57 2024 +0200
@@ -115,16 +115,80 @@
     "param",
     "source",
     "track",
-    "wbr")
+    "wbr",
+)
 
 SAFE_ATTRS = html.defs.safe_attrs.union({"style", "poster", "controls"}) - {"id"}
 SAFE_CLASSES = {
     # those classes are used for code highlighting
-    "bp", "c", "ch", "cm", "cp", "cpf", "cs", "dl", "err", "fm", "gd", "ge", "get", "gh",
-    "gi", "go", "gp", "gr", "gs", "gt", "gu", "highlight", "hll", "il", "k", "kc", "kd",
-    "kn", "kp", "kr", "kt", "m", "mb", "mf", "mh", "mi", "mo", "na", "nb", "nc", "nd",
-    "ne", "nf", "ni", "nl", "nn", "no", "nt", "nv", "o", "ow", "s", "sa", "sb", "sc",
-    "sd", "se", "sh", "si", "sr", "ss", "sx", "vc", "vg", "vi", "vm", "w", "write",
+    "bp",
+    "c",
+    "ch",
+    "cm",
+    "cp",
+    "cpf",
+    "cs",
+    "dl",
+    "err",
+    "fm",
+    "gd",
+    "ge",
+    "get",
+    "gh",
+    "gi",
+    "go",
+    "gp",
+    "gr",
+    "gs",
+    "gt",
+    "gu",
+    "highlight",
+    "hll",
+    "il",
+    "k",
+    "kc",
+    "kd",
+    "kn",
+    "kp",
+    "kr",
+    "kt",
+    "m",
+    "mb",
+    "mf",
+    "mh",
+    "mi",
+    "mo",
+    "na",
+    "nb",
+    "nc",
+    "nd",
+    "ne",
+    "nf",
+    "ni",
+    "nl",
+    "nn",
+    "no",
+    "nt",
+    "nv",
+    "o",
+    "ow",
+    "s",
+    "sa",
+    "sb",
+    "sc",
+    "sd",
+    "se",
+    "sh",
+    "si",
+    "sr",
+    "ss",
+    "sx",
+    "vc",
+    "vg",
+    "vi",
+    "vm",
+    "w",
+    "write",
 }
 STYLES_VALUES_REGEX = (
     r"^("
@@ -157,7 +221,7 @@
 
 
 class TextSyntaxes(object):
-    """ Text conversion class
+    """Text conversion class
     XHTML utf-8 is used as intermediate language for conversions
     """
 
@@ -170,7 +234,6 @@
     # default_syntax must be lower case
     default_syntax = SYNTAX_XHTML
 
-
     def __init__(self, host):
         log.info(_("Text syntaxes plugin initialization"))
         self.host = host
@@ -218,8 +281,8 @@
             #      when the user is not aware of markdown and HTML
             class EscapeHTML(Extension):
                 def extendMarkdown(self, md):
-                    md.preprocessors.deregister('html_block')
-                    md.inlinePatterns.deregister('html')
+                    md.preprocessors.deregister("html_block")
+                    md.inlinePatterns.deregister("html")
 
             def _html2text(html, baseurl=""):
                 h = html2text.HTML2Text(baseurl=baseurl)
@@ -228,20 +291,22 @@
 
             self.add_syntax(
                 self.SYNTAX_MARKDOWN,
-                partial(markdown.markdown,
-                        extensions=[
-                            EscapeHTML(),
-                            'nl2br',
-                            'codehilite',
-                            'fenced_code',
-                            'sane_lists',
-                            'tables',
-                            ],
-                        extension_configs = {
-                            "codehilite": {
-                                "css_class": "highlight",
-                            }
-                        }),
+                partial(
+                    markdown.markdown,
+                    extensions=[
+                        EscapeHTML(),
+                        "nl2br",
+                        "codehilite",
+                        "fenced_code",
+                        "sane_lists",
+                        "tables",
+                    ],
+                    extension_configs={
+                        "codehilite": {
+                            "css_class": "highlight",
+                        }
+                    },
+                ),
                 _html2text,
                 [TextSyntaxes.OPT_DEFAULT],
             )
@@ -287,7 +352,7 @@
         self.host.memory.update_params(self.params % self.params_data)
 
     def get_current_syntax(self, profile):
-        """ Return the selected syntax for the given profile
+        """Return the selected syntax for the given profile
 
         @param profile: %(doc_profile)s
         @return: profile selected syntax
@@ -301,7 +366,7 @@
         return failure
 
     def clean_style(self, styles_raw: str) -> str:
-        """"Clean unsafe CSS styles
+        """ "Clean unsafe CSS styles
 
         Remove styles not in the whitelist, or where the value doesn't match the regex
         @param styles_raw: CSS styles
@@ -323,9 +388,7 @@
             if value == "none":
                 continue
             cleaned_styles.append((key, value))
-        return "; ".join(
-            ["%s: %s" % (key_, value_) for key_, value_ in cleaned_styles]
-        )
+        return "; ".join(["%s: %s" % (key_, value_) for key_, value_ in cleaned_styles])
 
     def clean_classes(self, classes_raw: str) -> str:
         """Remove any non whitelisted class
@@ -355,9 +418,7 @@
         else:
             log.error("Only strings and HtmlElements can be cleaned")
             raise exceptions.DataError
-        cleaner = clean.Cleaner(
-            style=False, add_nofollow=False, safe_attrs=SAFE_ATTRS
-        )
+        cleaner = clean.Cleaner(style=False, add_nofollow=False, safe_attrs=SAFE_ATTRS)
         xhtml_elt = cleaner.clean_html(xhtml_elt)
         for elt in xhtml_elt.xpath("//*[@style]"):
             elt.set("style", self.clean_style(elt.get("style")))
@@ -369,11 +430,12 @@
                 if element.tag in VOID_ELEMENTS:
                     element.text = None
                 else:
-                    element.text = ''
+                    element.text = ""
         return html.tostring(xhtml_elt, encoding=str, method="xml")
 
-    def convert(self, text, syntax_from, syntax_to=_SYNTAX_XHTML, safe=True,
-                profile=None):
+    def convert(
+        self, text, syntax_from, syntax_to=_SYNTAX_XHTML, safe=True, profile=None
+    ):
         """Convert a text between two syntaxes
 
         @param text: text to convert