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style-guide: Add guidance for defining formatting for specific macros #114919

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Aug 28, 2023
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style-guide: Add guidance for defining formatting for specific macros #114919

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7 changes: 6 additions & 1 deletion src/doc/style-guide/src/expressions.md
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Expand Up @@ -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
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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
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