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Rollup merge of #114919 - joshtriplett:style-guide-macros, r=calebcartwright

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style-guide: Add guidance for defining formatting for specific macros
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Matthias Krüger 2023-08-28 08:13:58 +02:00 committed by GitHub
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src/doc/style-guide/src/expressions.md
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@ -400,7 +400,12 @@ constructs. For example, a macro use `foo!(a, b, c)` can be parsed like a
function call (ignoring the `!`), so format it using the rules for function
calls.
### Special case macros
The style guide defines specific formatting for particular macros in the
language or standard library. The style guide does not define formatting for
any third-party macros, even if similar to those in the language or standard
library.
### Format string macros
For macros which take a format string, if all other arguments are *small*,
format the arguments before the format string on a single line if they fit, and