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magiclen / educe

This crate offers procedural macros designed to facilitate the swift implementation of Rust's built-in traits.
MIT License
131 stars 11 forks source link

Use `0:` for named-fields debug of tuples and tuple variants #32

Open ijackson opened 3 months ago

ijackson commented 3 months ago

Change the output when the user requests debug printing of a tuple struct in named fields syntax.

Previously we output _0: (for example), which isn't really right: Rust permits 0:, and the field is actually called 0.

This is a behavioural change, but I don't think Debug output is regarded as semver-relevant, so this shouldn't be a considered breaking change.