dh_sphinxdoc fails to parse search.html generated file

[Miriam España Acebal]

Since sphinx (7.3.7-1), when introduced the following change

+ * dh_sphinxdoc: Support loading searchindex.js with defer="defer"

implemented in this way:

diff -Nru sphinx-7.2.6/debian/dh-sphinxdoc/dh_sphinxdoc sphinx-7.3.7/debian/dh-sphinxdoc/dh_sphinxdoc
--- sphinx-7.2.6/debian/dh-sphinxdoc/dh_sphinxdoc 2024-06-16 14:34:33.000000000 +0000
+++ sphinx-7.3.7/debian/dh-sphinxdoc/dh_sphinxdoc 2024-07-03 07:18:22.000000000 +0000
@@ -290,7 +290,7 @@
         }
     }
     defined $documentation_options or error("DOCUMENTATION_OPTIONS not found");
- my $loads_searchindex = $search =~ m{<script(?: type="text/javascript")? src="[^"]*searchindex.js\s?"(?: defer)?>};
+ my $loads_searchindex = $search =~ m{<script(?: type="text/javascript")? src="[^"]*searchindex.js\s?"(?: defer(?:="defer"))?>};
     unless ($loads_searchindex)
     {
         # old style, used before Sphinx 2.0

if a generated search.html file has only defer when loading searchindex.js, e. g.:

        <script type="text/javascript" src="searchindex.js" defer></script>

dh_sphinxdoc fails with:

dh_sphinxdoc: error: <doc_path>/search.html does not load searchindex.js.

It has been seen in the mako package, preventing its build [1]

https://launchpadlibrarian.net/741379311/buildlog_ubuntu-oracular-amd64.mako_1.3.5-1.1_BUILDING.txt.gz

[Miriam España Acebal (mirespace)]

I'm submitting a fix for the regex expression in Salsa.

[Miriam España Acebal (mirespace)]

Salsa MR at https://salsa.debian.org/python-team/packages/sphinx/-/merge_requests/5