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Diffstat (limited to 'src/tools/clippy/src/docs/octal_escapes.txt')
-rw-r--r-- | src/tools/clippy/src/docs/octal_escapes.txt | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/src/tools/clippy/src/docs/octal_escapes.txt b/src/tools/clippy/src/docs/octal_escapes.txt deleted file mode 100644 index eee820587..000000000 --- a/src/tools/clippy/src/docs/octal_escapes.txt +++ /dev/null @@ -1,33 +0,0 @@ -### What it does -Checks for `\0` escapes in string and byte literals that look like octal -character escapes in C. - -### Why is this bad? - -C and other languages support octal character escapes in strings, where -a backslash is followed by up to three octal digits. For example, `\033` -stands for the ASCII character 27 (ESC). Rust does not support this -notation, but has the escape code `\0` which stands for a null -byte/character, and any following digits do not form part of the escape -sequence. Therefore, `\033` is not a compiler error but the result may -be surprising. - -### Known problems -The actual meaning can be the intended one. `\x00` can be used in these -cases to be unambiguous. - -The lint does not trigger for format strings in `print!()`, `write!()` -and friends since the string is already preprocessed when Clippy lints -can see it. - -### Example -``` -let one = "\033[1m Bold? \033[0m"; // \033 intended as escape -let two = "\033\0"; // \033 intended as null-3-3 -``` - -Use instead: -``` -let one = "\x1b[1mWill this be bold?\x1b[0m"; -let two = "\x0033\x00"; -```
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