Feature: Lazy Quantifiers
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Lazy Quantifiers specify repetition of an Atom, but attempt to match as few instances of the preceding Atom as possible to satisfy the pattern before advancing.
Syntax
NOTE: The following syntax is an example based on some of the supported engines. For specific engine support, see Engines.
*?— Matches the preceding Atom zero or more times.+?— Matches the preceding Atom one or more times.??— Matches the preceding Atom zero or one times.{n}?— Where n is an integer. Matches the preceding Atom exactly n times.{n,}?— Where n is an integer. Matches the preceding Atom at-least n times.{n,m}?— Where n and m are integers, and m >= n. Matches the preceding Atom at-least n times and at-most m times.
Engines
| Engine | Supported |
|---|---|
| Perl | ✔ |
| PCRE | ✔ |
| Boost.Regex | ✔ |
| .NET | ✔ |
| Oniguruma | ✔ |
| Hyperscan | ✔ |
| ICU | ✔ |
| Glib/GRegex | ✔ |
| ECMAScript | ✔ |