ArcLoader won't work without a top level directory

[alerque]

I spent a while trying to figure out why I was only getting panics trying to follow examples from the docs. I finally narrowed it down to this bit of code:

fluent-templates/tests/template.rs

Line 21 in 66f53a7

let arc = ArcLoader::builder("tests/locales", unic_langid::langid!("en-US"))

The path from this test tests/locales from the test and examples works, but using "./" or any other iteration I can think of to use $CWD to look for resources ends in a panic.

[XAMPPRocky]

Thank you for your issue! I don't have the time at the moment to fix this, but I would be able to review a PR and release a fix if someone can contribute a fix.

[alerque]

I've tracked this down a bit more. The issue is not with being able to use CWD per say (although that does cause extra panics), it is also with the fact that the loader blindly assumes everything in the path given (even if it is "./locales" or similar) must be a valid locale tree and have valid Fluent resource files. It doesn't matter if the locales and resource files that you use are all fine, if one exists on the file system that isn't valid things go haywire.r

• Any unparsable FTL file (even in an non-locale directory kept around as a test fixture) will make in panic.
• Any directory present that wouldn't be a valid locale will panic.

[XAMPPRocky]

Thank you for investigating! Those errors make sense to me but they should probably not be panics and they should be more informative of what specifically is causing the problem.