From catalog/rfc9110-http.abnf rule: quoted-pair
Definition
quoted-pair = "\" ( HTAB / SP / VCHAR / obs-text )
obs-text = %x80-ff
Info
- Rulename
- quoted-pair
- Dependencies
- HTAB, SP, VCHAR, obs-text, quoted-pair
- Used Builtins
- HTAB, SP, VCHAR
Alphabet
␉ ␠…[ ]…~ U+80…U+FF\
Translations
Railroad Diagram
ECMAScript/JavaScript Regular Expression Literal
/^\\[\x09 -~\u{80}-\u{FF}]$/
Swift Regular Expression
\\[\u{9} -~\u{80}-\u{FF}]
POSIX Extended Regular Expression
\\[\x09 -~\u{80}-\u{FF}]