Section numbers wrong when multiple argparse directives used in single page

[djhoese]

This is a rewrite of https://github.com/alex-rudakov/sphinx-argparse/issues/127 from the old project, but I've made it into a smaller reproducible example. The summary of the issue is that Named Arguments and Options sections in a single restructuredtext document (~or maybe a single sphinx project~) that has a :numbered: TOC tree will always use the section number from the last .. argparse:: directive.

mkdir sample_proj
cd sample_proj
touch myproj.py
touch index.rst
touch utils.rst

myproj.py

def get_parser1(parser):
    parser.add_argument("--flag1", default=1, type=int)
    return parser


def get_parser2(parser):
    parser.add_argument("--flag2", default=2, type=int)
    return parser

index.rst

Welcome to myproj's documentation!
==================================

.. toctree::
   :maxdepth: 2
   :caption: Contents:
   :numbered:

   utils

utils.rst

Utility Scripts
===============


Section A
---------

.. argparse::
    :module: myproj
    :func: get_parser1
    :passparser:

Section B
---------

.. argparse::
    :module: myproj
    :func: get_parser2
    :passparser:

Then generate the docs with:

PYTHONPATH=. sphinx-build . build -C -D extensions=sphinxarg.ext

And open built/utils.html in a browser. You'll see something like:

Notice how the "Named Arguments" sections have the same section number. They should be 1.1.1 and 1.2.1.