Consider `space case`

[Kinrany]

Posting this as a place to discuss yet another case to support.

This one would be like snake_case except with spaces instead of underscores as word boundaries.

[Kinrany]

The broader question is whether supporting lots and lots of random cases is an option.

The use case that I see here is macros like serde and strum that rename all fields or enum variants.

If the library was to support this, I imagine it would need to be restructured as the core logic for parsing and formatting words and word boundaries, plus a way to describe arbitrary new cases, plus a short blessed list of names for the most common cases including the currently supported ones.