How does --config <URL> work?

[NeoNyaa]

How does fetching the config via a URL work exactly? I would much prefer to load my config via a URL so that if I make a change I don't have to update it everywhere else by hand, but I have concerns about edgecases like lack a network connection or hit a ratelimit.

1. Does it attempt to fetch from URL and error out on fail?
2. Does it do the above but with a fallback to the default built in prompt?
3. Does it attempt to fetch from URL and error out on fail but cache it to disk on success so that in the event of a fail it falls back to the cached version on disk, and when the next successful GET request happens, update the cached file?

I hope it functions like case 3 where it will try and on success, cache it, and on fail use the cached version with a fallback to the built in prompt should all else fail.

If it does work like the above, is there anything extra I would need to do or is it literally as simple as the following?

eval "$(oh-my-posh init zsh --config 'https://raw.githubusercontent.com/NeoNyaa/configs/refs/heads/main/oh-my-posh/neoPrompt.omp.jsonc')"

[JanDeDobbeleer]

It works like 3, we cache the config. What we do is a HEAD check with the etag we previously had to understand if the resource changed. But I did notice that if one of those checks fails, we do not return the cached config if we have it. Coming with #6813