Auto merge of #12180 - y21:conf_lev_distance, r=blyxyas

Suggest existing configuration option if one is found

While working on/testing #12179, I made the mistake of using underscores instead of dashes for the field name in the clippy.toml file and ended up being confused for a few minutes until I found out what's wrong. With this change, clippy will suggest an existing field if there's one that's similar.
```
1 | allow_mixed_uninlined_format_args = true
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: perhaps you meant: `allow-mixed-uninlined-format-args`
```
(in hindsight, the current behavior of printing all the config options makes it obvious in most cases but I still think a suggestion like this would be nice to have)

I had to play around with the value a bit. A max distance of 5 seemed a bit too strong since it'd suggest changing `foobar` to `msrv`, which seemed odd, and 4 seemed just good enough to detect a typo of five underscores.

changelog: when an invalid field in clippy.toml is found, suggest the closest existing one if one is found

0 files changed, 0 insertions, 0 deletions