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Suggest -Zunpretty=ast-tree instead of -Zast-json

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-Zast-json is being removed shortly: https://github.com/rust-lang/rust/pull/85993.
ast-tree does essentially the same thing, and still works today even before that PR lands.
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Joshua Nelson 2022-05-05 20:11:41 -05:00
parent 5dad51736c
commit 677b38c918
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CONTRIBUTING.md
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@ -67,7 +67,7 @@ and resolved paths.
[`T-AST`] issues will generally need you to match against a predefined syntax structure.
To figure out how this syntax structure is encoded in the AST, it is recommended to run
`rustc -Z ast-json` on an example of the structure and compare with the [nodes in the AST docs].
`rustc -Z unpretty=ast-tree` on an example of the structure and compare with the [nodes in the AST docs].
Usually the lint will end up to be a nested series of matches and ifs, [like so][deep-nesting].
But we can make it nest-less by using [if_chain] macro, [like this][nest-less].