resources.PostProcess causes --path-warnings to falsely report duplicate content

[earthboundkid]

If I have resources.PostProcess in my template, it falsely reports the page as duplicated with hugo --path-warnings.

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

v0.75.1/extended darwin/amd64 BuildDate: unknown

Does this issue reproduce with the latest release?

Yes

[rhcarvalho]

I'm updating a website to use TailwindCSS 3.x and following the patterns in https://github.com/bep/hugo-starter-tailwind-basic. Turns out hugo-starter-tailwind-basic relies on resources.PostProcess and having that in my template broke my build script, which runs hugo with --printPathWarnings and --panicOnWarning in the hopes of catching problems earlier.

Took me quite some time today until I was able to pin down the problem and find this issue.

Since Tailwind support seems to be something that's been worked on lately, could this issue be pinned to help others find about it earlier?

[github-actions]

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