Keep some routes without `-` for non-redirect-following clients
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From https://gitlab.com/gitlab-org/gitlab/issues/118840:
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Some clients don't follow redirects and we should think carefully about breaking them (`/raw/`)
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Also:
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we have .diff and .patch routes that are meant for machine consumption. Don't know how much they are used.
We could considering doing a log analysis where we look at the user agent.
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It seems like it would be worth making some kind of commitment to 'never' break raw URLs, and possibly some others too.
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