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Make clear that format padding doesn't work for Debug #59933

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Merged
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Apr 19, 2019
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Make clear that format padding doesn't work for Debug #59933

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7 changes: 4 additions & 3 deletions src/liballoc/fmt.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -343,9 +343,10 @@
//! * `^` - the argument is center-aligned in `width` columns
//! * `>` - the argument is right-aligned in `width` columns
//!
//! Note that alignment may not be implemented by some types. A good way
//! to ensure padding is applied is to format your input, then use this
//! resulting string to pad your output.
//! Note that alignment may not be implemented by some types. In particular, it
//! is not generally implemented for the `Debug` trait. A good way to ensure
//! padding is applied is to format your input, then use this resulting string
//! to pad your output.
//!
//! ## Sign/`#`/`0`
//!
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