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fix: better Fn traits formatting #10823

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Merged
merged 1 commit into from
Nov 21, 2021
Merged

fix: better Fn traits formatting #10823

merged 1 commit into from
Nov 21, 2021

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veber-alex
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This makes it so formatting Fn traits properly handles:

  1. An Fn trait with only a single argument -> removes the trailing comma.
  2. An Fn trait which returns nothing (an empty tuple) -> don't show -> () as the return type.

before:
before

after:
after

@jonas-schievink
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Thanks!

bors r+

@jonas-schievink
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bors r+

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bors bot commented Nov 21, 2021

Build succeeded:

@bors bors bot merged commit 183ef04 into rust-lang:master Nov 21, 2021
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@veber-alex @jonas-schievink