fix(docs): corrected cursor handling in mkdocs

The trick was to use an actual list of cursor tokens that is consumed
on use. That way, we don't loose track of were we are in the
structure.

Related to #64

src/mako/cli/docs/commands.md.mako

@@ -158,36 +158,48 @@ ${SPLIT_END}
     - ${p.get('description') or NO_DESC | xml_escape ,indent_all_but_first_by(2)}
 </%def>
 
-<%def name="_list_schem_args(schema, abs_cursor='')">\
+<%def name="_list_schem_args(schema, cursor_tokens=list())">\
 <%
+    if len(cursor_tokens) == 0:
+        cursor_tokens = [FIELD_SEP]
+
     def cursor_fmt(cursor):
-        return '-%s %s ' % (STRUCT_FLAG, cursor)
+        fndfi = 0 # first non-dot field index
+        for (fndfi, v) in enumerate(cursor):
+            if v != FIELD_SEP:
+                break
+        return '-%s %s ' % (STRUCT_FLAG, ''.join(cursor[:fndfi]) + FIELD_SEP.join(cursor[fndfi:]))
 
     def cursor_arg():
-        if abs_cursor:
-            return cursor_fmt(abs_cursor)
+        if cursor_tokens:
+            res = cursor_fmt(cursor_tokens)
+            del cursor_tokens[:]
+            return res
         return ''
-    abs_cursor_arg = cursor_arg()
 %>\
 % for fn in sorted(schema.fields.keys()):
 <% 
     f = schema.fields[fn] 
-    cursor_prefix = ''
-    if abs_cursor == '':
-        cursor_prefix = FIELD_SEP
 %>\
 % if isinstance(f, SchemaEntry):
-* **${abs_cursor_arg}-${STRUCT_FLAG} ${mangle_subcommand(fn)}=${field_to_value(f)}**
+* **${cursor_arg()}-${STRUCT_FLAG} ${mangle_subcommand(fn)}=${field_to_value(f)}**
     - ${f.property.get('description', NO_DESC) | xml_escape, indent_all_but_first_by(2)}
 % if f.container_type == CTYPE_ARRAY:
     - Each invocation of this argument appends the given value to the array.
 % elif f.container_type == CTYPE_MAP:
     - the value will be associated with the given `key`
 % endif # handle container type
-<% abs_cursor_arg = '' %>
 % else:
-${self._list_schem_args(f, '%s%s' % (cursor_prefix, mangle_subcommand(fn)))}
-<% abs_cursor_arg = cursor_fmt(FIELD_SEP + FIELD_SEP) %>\
+<%
+    cursor_tokens.append(mangle_subcommand(fn))
+%>\
+${self._list_schem_args(f, cursor_tokens)}
+<%
+    assert not cursor_tokens or cursor_tokens[-1] == FIELD_SEP
+    if not cursor_tokens:
+        cursor_tokens.append(FIELD_SEP)
+    cursor_tokens.append(FIELD_SEP) 
+%>\
 % endif
 % endfor
 </%def>