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Я использую Sphinx (v3.2.1) и LaTeX для генерации матричных уравнений, которые я хотел бы использовать cline с массивом. Однако он не будет отображаться так, как ожидалось:

 .. math::
  :label: lp

  left[
  begin{array}{cc|c}
    a_{11} amp;a_{12} amp;b_1 \
    a_{21} amp;a_{22} amp;b_2 \
    a_{31} amp;a_{32} amp;b_3 \ cline{1-2}
    c_{1}  amp;c_{2}  amp;d \
  end{array}
  right]
  

Отображается как

Мой conf.py является

 # Configuration file for the Sphinx documentation builder.
#
# This file only contains a selection of the most common options. For a full
# list see the documentation:
# http://www.sphinx-doc.org/en/master/config

# -- Path setup --------------------------------------------------------------

# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
#
# import os
# import sys
# sys.path.insert(0, os.path.abspath('.'))

import os
import sys

sys.path.insert(1, os.path.abspath("../../"))
from trellis import __version__  # nopep8

import sphinx_rtd_theme  # nopep8

# -- Project information -----------------------------------------------------

project = 'foo'
copyright = 'foo'
author = 'foo'

# The full version, including alpha/beta/rc tags
release = __version__


# -- General configuration ---------------------------------------------------

# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = [
    "sphinx.ext.autodoc",
    "sphinx.ext.doctest",
    "sphinx.ext.intersphinx",
    "sphinx.ext.todo",
    "sphinx.ext.coverage",
    "sphinx.ext.ifconfig",
    "sphinx.ext.viewcode",
    "sphinx.ext.githubpages",
    "sphinx.ext.autosummary",
    "sphinx.ext.napoleon",
    "sphinx.ext.autosectionlabel",
    "sphinx_rtd_theme",
    "sphinx.ext.mathjax",
]

intersphinx_mapping = {
    "python": ("https://docs.python.org/3", None),
    'numpy': ('http://docs.scipy.org/doc/numpy', None),
    'scipy': ('http://docs.scipy.org/doc/scipy/reference', None),
}

autodoc_default_options = {
    'members': None
}

napoleon_google_docstring = False
napoleon_include_init_with_doc = True
napoleon_include_private_with_doc = True
napoleon_include_special_with_doc = True
napoleon_use_admonition_for_examples = True
napoleon_use_admonition_for_notes = True
napoleon_use_admonition_for_references = True
napoleon_use_rtype = False

latex_elements = {
    "preamble": r'''usepackage{amsmath}'''
}

# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']

# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
# This pattern also affects html_static_path and html_extra_path.
exclude_patterns = []


# -- Options for HTML output -------------------------------------------------

# The theme to use for HTML and HTML Help pages.  See the documentation for
# a list of builtin themes.
#
html_theme = "sphinx_rtd_theme"

# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']

# These paths are either relative to html_static_path
# or fully qualified paths (eg. https://...)
html_css_files = ['css/custom.css']
  

Итак, я наткнулся на этот вопрос, потому что у меня была очень похожая проблема. Я не уверен, удалось ли вам решить эту проблему, поскольку это было некоторое время назад, но вот что у меня получилось: я просто использовал hline вместо cline.

 .. math::

  left[
  begin{array}{cc|c}
    a_{11} amp;a_{12} amp;b_1 \
    a_{21} amp;a_{22} amp;b_2 \
    a_{31} amp;a_{32} amp;b_3 \ 
    hline
    c_{1}  amp;c_{2}  amp;d \
  end{array}
  right]