Use default error action for malformed input and unmappable characters

[tobbi]

I have to preface this by saying that I'm quite new to this codebase. However, I looked through the issues list and fixing the linked issue seemed trivial enough so I gave it a shot.

Maybe, if things work out and I learn quickly, I might try tackling larger issues.

If anything else is needed, please go ahead and tell me.

Fixes #6944

[chaoren]

Sorry, we haven't gotten around to making a decision on #6944 yet.

Per https://github.com/google/guava/wiki/HowToContribute#code-contributions:

2. Discuss the feature request until it is marked Accepted.

should happen before

6. Implement the change.

[tobbi]

No problem. I guess I'll just wait, unless you decide to implement things yourself. Nonetheless, I'm interested in contributing. Are there any "good first issue"-type issues I could try?

[chaoren]

Filing and/or commenting on issues is probably the best way to contribute. We'd rather have everything hashed out completely before having anyone start working on an implementation.

[tobbi]

How do you mark feature requests as accepted? Does that happen on Github? At first glance I couldn't find a suitable label.

[chaoren]

Yeah, I also expected there to be a status=accepted label given the contribution guidelines. I'll check if we can get that label added.