livecheck: add compressed option

[samford]

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This adds a compressed url option for livecheck blocks, so we can selectively omit the curl --compressed argument that we use by default for Strategy.page_content requests. We almost never want to do this but there are a small number of files (e.g., appcasts) hosted on AWS where the response uses a Content-Encoding: aws-chunked header instead of the actual encoding (e.g., gzip). This causes a curl error (curl: (56) Unrecognized content encoding type. libcurl understands deflate, gzip content encodings) but we can avoid this if we don't request a compressed response. It's not ideal but it's necessary in these cases (and thankfully the files are small).

Besides that, I added test cases in livecheck_spec.rb for the cookies and header options, as I forgot to check the values that are set when I added those options in the past.

[Copilot]

Pull request overview

Adds a compressed option to the livecheck url DSL/options plumbing to allow Strategy.page_content to omit curl --compressed for problematic endpoints (e.g., AWS Content-Encoding: aws-chunked responses), and expands tests for existing cookies/header handling.

Changes:

• Add compressed to Livecheck::Options and the livecheck url DSL, and use it to control whether Strategy.page_content appends --compressed.
• Update option equality/url-options serialization to include compressed.
• Add/extend specs for compressed, cookies, and header option behavior.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Library/Homebrew/livecheck/strategy.rb	Makes --compressed conditional in Strategy.page_content based on options.compressed.
Library/Homebrew/livecheck/options.rb	Introduces compressed option and includes it in url_options/equality.
Library/Homebrew/livecheck.rb	Extends the url DSL method signature and option assignment to include compressed.
Library/Homebrew/test/livecheck/strategy_spec.rb	Adds a spec for the new compressed option (currently not asserting the key behavior).
Library/Homebrew/test/livecheck/options_spec.rb	Updates specs to include compressed in option hashes and defaults.
Library/Homebrew/test/livecheck_spec.rb	Extends DSL-level option tests to assert compressed, cookies, and header values are set.

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[MikeMcQuaid]

One question, otherwise looks good!

[MikeMcQuaid]

Nilable booleans always feel a bit weird to me. Does this need to be nilable?