Get error message in non-success cases with WWW-style syntax about raku-libcurl

[CurtTilmes]

Hmm... Maybe the error checking code could check for the bad status code type of error and stash the content into a special Exception type? Then you could CATCH the exception and still see the actual content. I don't have time to do that now, but perhaps sometime..

[CurtTilmes]

It sets :failonerror by default, which forces it to throw an exception on a non-2xx status code.
You can't really override that with the shortcut syntax. For example, this is get:

LibCurl::HTTP.new(|%opts).GET($url, $filename).perform.content;

You need to stick an extra setopt(:!failonerror) in there before the perform. The GET itself sets :failonerror, so it will override any options that get passed in to the new.