make Debug impl for ascii::Char match that of char
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Rollup of 6 pull requests Successful merges: - rust-lang#114965 (Remove Drop impl of mpsc Receiver and (Sync)Sender) - rust-lang#115434 (make `Debug` impl for `ascii::Char` match that of `char`) - rust-lang#115477 (Stabilize the `Saturating` type) - rust-lang#115611 (add diagnostic for raw identifiers in format string) - rust-lang#115654 (improve PassMode docs) - rust-lang#115862 (Migrate `compiler/rustc_hir_typeck/src/callee.rs` to translatable diagnostics) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#115434 - soqb:ascii-char-manual-debug, r=dtolnay make `Debug` impl for `ascii::Char` match that of `char` # Objective use a more recognisable format for the `Debug` impl on `ascii::Char` than the derived one based off the enum variants. The alogorithm used is the following: - escape `ascii::Char::{Null, CharacterTabulation, CarraigeReturn, LineFeed, ReverseSolidus, Apostrophe}` to `'\0'`, `'\t'`, `'\r'`, `'\n'`, `'\\'` and `'\''` respectively. these are the same escape codes as `<char as Debug>::fmt` uses. - if `u8::is_ascii_control` is false, print the character wrapped in single quotes. - otherwise, print in the format `'\xAB'` where `A` and `B` are the hex nibbles of the byte. (`char` uses unicode escapes and this seems like the corresponding ascii format). Tracking issue: rust-lang#110998
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Objective
use a more recognisable format for the
Debugimpl onascii::Charthan the derived one based off the enum variants. The alogorithm used is the following:ascii::Char::{Null, CharacterTabulation, CarraigeReturn, LineFeed, ReverseSolidus, Apostrophe}to'\0','\t','\r','\n','\\'and'\''respectively. these are the same escape codes as<char as Debug>::fmtuses.u8::is_ascii_controlis false, print the character wrapped in single quotes.'\xAB'whereAandBare the hex nibbles of the byte. (charuses unicode escapes and this seems like the corresponding ascii format).Tracking issue: #110998