Make argument and option section IDs more unique (#44)

sphinxarg/ext.py

@@ -86,7 +86,13 @@ def render_list(l, markdown_help, settings=None):
         return all_children
 
 
-def print_action_groups(data, nested_content, markdown_help=False, settings=None):
+def print_action_groups(
+    data,
+    nested_content,
+    markdown_help=False,
+    settings=None,
+    id_prefix='',
+):
     """
     Process all 'action groups', which are also include 'Options' and 'Required
     arguments'. A list of nodes is returned.
@@ -97,7 +103,8 @@ def print_action_groups(data, nested_content, markdown_help=False, settings=None
         for action_group in data['action_groups']:
             # Every action group is composed of a section, holding
             # a title, the description, and the option group (members)
-            section = nodes.section(ids=[action_group['title'].replace(' ', '-').lower()])
+            title_as_id = action_group['title'].replace(' ', '-').lower()
+            section = nodes.section(ids=[f'{id_prefix}-{title_as_id}'])
             section += nodes.title(action_group['title'], action_group['title'])
 
             desc = []
@@ -487,6 +494,7 @@ def run(self):
             f = self._open_filename()
             code = compile(f.read(), self.options['filename'], 'exec')
             exec(code, mod)
+            module_name = None
             attr_name = self.options['func']
             func = mod[attr_name]
         else:
@@ -563,6 +571,7 @@ def run(self):
                 nested_content,
                 markdown_help,
                 settings=self.state.document.settings,
+                id_prefix=(f'{module_name}-' if module_name else '') + attr_name,
             )
         )
         if 'nosubcommands' not in self.options: