Double brackets in footnote references (docutils 0.18?)

[mgeier]

Describe the bug

See #10415 (comment), that issue also has screenshots.

How to Reproduce

x

Expected behavior

No response

Your project

x

Screenshots

No response

OS

x

Python version

x

Sphinx version

x

Sphinx extensions

No response

Extra tools

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Additional context

No response

[mgeier]

Very annoying new bug report template, BTW.

[AA-Turner]

My reply from #10457

One set [of brackets] is in the HTML source, <span class="fn-bracket">[</span>. The other is added in CSS:

sphinx/sphinx/themes/basic/static/basic.css_t

Lines 240 to 248 in af425c0

	a.brackets:before,
	span.brackets > a:before{
	content: "[";
	}
	a.brackets:after,
	span.brackets > a:after {
	content: "]";
	}

We should only use the CSS brackets if span.fn-bracket is absent.

A

[AA-Turner]

Example: https://www.sphinx-doc.org/en/master/usage/advanced/intl.html#sphinx-internationalization-details

[AA-Turner]

Quick reproducer:

import shutil
from pathlib import Path

from sphinx.cmd.make_mode import run_make_mode


def write(filename, text): Path(filename).write_text(text, encoding="utf-8")


write("conf.py", '''\
html_theme = "basic"
''')

write("index.rst", '''\
Imagine you have Spanish translations [2]_.

.. [2] Because nobody expects the Spanish Inquisition!
''')

shutil.rmtree("_build", ignore_errors=True)
run_make_mode(["html", ".", "_build", "-T", "-W"])

A

[AA-Turner]

Can't reproduce on Docutils 0.17.1, this is a 0.18.* issue.