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regex

Compiled regular expression matching using RE2-compatible syntax.

Usage

let pattern = Regex r"\d+"
let caps = pattern.match "abc 42 def"
echo $caps  # => 42

Syntax

Patterns use RE2 syntax, the same as the Rust regex crate. This supports most common regular expression features including:

  • Character classes: \d, \w, \s, [a-z], [^abc]
  • Repetition: *, +, ?, {n}, {n,m}
  • Anchors: ^, $, \b
  • Groups: (abc), (?:abc) (non-capturing), (?<name>abc) (named)
  • Alternation: a|b

Backreferences and lookahead/lookbehind assertions are not supported.

Types

TypeDescription
Captures A successful match along with any capture groups.
Match A single matched span within a string.
Regex A compiled regular expression.