Add test for issue #319.

src/sphinxcontrib/bibtex/__init__.py

@@ -50,7 +50,7 @@ def setup(app: Sphinx) -> Dict[str, Any]:
     app.add_role("footcite", FootCiteRole())
 
     return {
-        "version": "2.6.0a4",
+        "version": "2.6.0a5",
         "env_version": 9,
         "parallel_read_safe": True,
         "parallel_write_safe": True,

test/roots/test-citation_label_special_chars/conf.py

@@ -0,0 +1,3 @@
+extensions = ["sphinxcontrib.bibtex"]
+exclude_patterns = ["_build"]
+bibtex_bibfiles = ["refs.bib"]

test/roots/test-citation_label_special_chars/index.rst

@@ -0,0 +1,2 @@
+.. bibliography::
+   :all:

test/roots/test-citation_label_special_chars/refs.bib

@@ -0,0 +1,19 @@
+@book{Manning2008,
+  author = {Christopher D. Manning and Prabhakar Raghavan and Hinrich Sch\"utze},
+  title = {Introduction to Information Retrieval},
+  address = {Cambridge},
+  publisher = {Cambridge University Press},
+  year = {2008},
+  url = {https://nlp.stanford.edu/IR-book/},
+}
+
+@article{Serrano2009,
+  author = {M. {\'A}ngeles Serrano and Mari{\'a}n Bogu{\~n}{\'a} and Alessandro Vespignani},
+  title = {Extracting the multiscale backbone of complex weighted networks},
+  journal = {Proceedings of the National Academy of Sciences},
+  volume = {106},
+  number = {16},
+  year = {2009},
+  pages = {6483--6488},
+  doi = {10.1073/pnas.0808904106},
+}

test/test_citation.py

@@ -525,3 +525,14 @@ def test_citation_tooltip3(app, warning) -> None:
     assert (
         len(html_citation_refs(label="tes", title="whoop whoop").findall(output)) == 1
     )
+
+
+# https://bitbucket.org/pybtex-devs/pybtex/issues/442/author-names-with-special-latex-characters
+@pytest.mark.xfail(reason="upstream bug")
+@pytest.mark.sphinx("html", testroot="citation_label_special_chars")
+def test_citation_label_special_chars(app, warning) -> None:
+    app.build()
+    assert not warning.getvalue()
+    output = (app.outdir / "index.html").read_text(encoding="utf-8-sig")
+    assert len(html_citations(label="MRS08").findall(output)) == 1
+    assert len(html_citations(label="SBV09").findall(output)) == 1