Method octal

regex/regex-syntax/src/ast/parse.rs:205–208

Whether to support octal syntax or not. Octal syntax is a little-known way of uttering Unicode codepoints in a regular expression. For example, `a`, `\x61`, `\u0061` and `\141` are all equivalent regular expressions, where the last example shows octal syntax. While supporting octal syntax isn't in and of itself a problem, it does make good error messages harder. That is, in PCRE based regex engi

(&mut self, yes: bool)

    ///
    /// Octal syntax is disabled by default.
    pub fn octal(&mut self, yes: bool) -> &mut ParserBuilder {
        self.octal = yes;
        self
    }

    /// Enable verbose mode in the regular expression.
    ///