Template lookup order no longer finds layouts/_default/author.terms.html

[earthboundkid]

My /authors/ page no longer uses the layouts/_defaults/author.terms.html layout with Hugo 123. Renaming the file to authors.terms.html fixes the issue, but the actual taxonomy is defined as

[taxonomies]
  author = "authors"

See #12174.

What version of Hugo are you using (hugo version)?

$ hugo version
hugo v0.123.7-312735366b20d64bd61bff8627f593749f86c964+extended darwin/arm64 BuildDate=2024-03-01T16:16:06Z VendorInfo=brew

Does this issue reproduce with the latest release?

Yes.

[earthboundkid]

Interestingly, author.html works for individual author pages, but authors.html does not. Seems like they should probably either both work with S or both work without S or both work with either.

[jmooring]

I'm probably missing a key piece of this, but I am unable to reproduce the problem.

Site config

[taxonomies]
author = 'authors'

Content

authors = ['John Smith','Robert Smith']

Layouts

layouts/
└── _default/
    ├── author.terms.html <-- renders the authors taxonomy page
    ├── baseof.html
    ├── home.html
    ├── list.html
    └── single.html

Test site

git clone --single-branch -b hugo-github-issue-12193 https://github.com/jmooring/hugo-testing hugo-github-issue-12193
cd hugo-github-issue-12193
rm -rf public && hugo && cat public/authors/index.html

[earthboundkid]

Make a content/authors/_index.md and the bug will reproduce.

[jmooring]

Perfect. Thanks. This is very similar to #12146.

Test case

func TestFoo(t *testing.T) {
	t.Parallel()

	files := `
-- hugo.toml --
disableKinds = ['page','rss','section','sitemap']
[taxonomies]
author = 'authors'
-- layouts/_default/list.html --
{{ .Title }}|
-- layouts/_default/author.terms.html --
layouts/_default/author.terms.html
-- content/authors/_index.md --
---
title: Authors Page
---
`

	b := hugolib.Test(t, files)

	b.AssertFileExists("public/index.html", true)
	b.AssertFileExists("public/authors/index.html", true)
	b.AssertFileContent("public/authors/index.html", "layouts/_default/author.terms.html") // failing test
}

[github-actions]

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