Space before ?

[burdges]

It appears rust fmt want f()?; instead of f() ?; but why? Or what options control this? There maybe situations where the f()?; meshes better with other concerns, but but overall f() ?; should be preferred, as it makes the error path slightly more visible.

[ytmimi]

Thanks for reaching out, but going to close this as a duplicate of #5595. There currently is no option to add a space before the try operator.