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20ca54b6a6
Improve escaping of byte, byte str, and c str proc-macro literals This PR changes the behavior of `proc_macro::Literal::byte_character` (https://github.com/rust-lang/rust/issues/115268), `byte_string`, and `c_string` (https://github.com/rust-lang/rust/issues/119750) to improve their choice of escape sequences. 3 categories of changes are made: 1. Never use `\x00`. Always prefer `\0`, which is supported in all the same places. 2. Never escape `\'` inside double quotes and `\"` inside single quotes. 3. Never use `\x` for valid UTF-8 in literals that permit `\u`. The second commit adds tests covering these cases, asserting the **old** behavior. The third commit implements the behavior change and simultaneously updates the tests to assert the **new** behavior. |
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| .. | ||
| assembly | ||
| auxiliary | ||
| codegen | ||
| codegen-units | ||
| coverage | ||
| coverage-run-rustdoc | ||
| crashes | ||
| debuginfo | ||
| incremental | ||
| mir-opt | ||
| pretty | ||
| run-make | ||
| run-pass-valgrind | ||
| rustdoc | ||
| rustdoc-gui | ||
| rustdoc-js | ||
| rustdoc-js-std | ||
| rustdoc-json | ||
| rustdoc-ui | ||
| ui | ||
| ui-fulldeps | ||
| COMPILER_TESTS.md | ||