---
name: "Regex.REFlags"
section: "3kaya"
platform: "linux"
package: "kaya"
version: "0.4.4-6.2"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/Regex.REFlags"
---

# Regex.REFlags(3kaya)

Flags for regular expression compilation

## NAME

Regex::REFlags - Flags for regular expression compilation

## SYNOPSIS

**Regex::REFlags\<** **\>**

-

  \=  **IgnoreCase(****)**

-

  \|  **Extended(****)**

-

  \|  **Multiline(****)**

-

  \|  **Ungreedy(****)**

## DESCRIPTION

Flags for regular expression compilation

-

  \-  **IgnoreCase**  makes the expression case-insensitive (so "^a" would match "All" and "all"

-

  \-  **Extended**  when set causes whitespace in the pattern (other than in a character class) and characters between a '#' outside a character class and the next newline character to be ignored. An escaping backslash can be used to include a whitespace or '#' character as part of the pattern.

-

  \-  **Multiline**  changes the meaning of the start '^' and end '$' characters so that as well as matching the start and end of the string, they will also match immediately after and immediately before a newline '\\n' character.

-

  \-  **Ungreedy**  causes the expression and sub-expressions to find the smallest possible match, rather than the largest possible, unless a '?' is placed after the expression. For example, the pattern "a.\*a" would match "aca" if ungreedy, and "acada" if greedy in the string "bacadaf".

## AUTHORS

Kaya standard library by Edwin Brady, Chris Morris and others (kaya@kayalang.org). For further information see http://kayalang.org/

## LICENSE

The Kaya standard library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License (version 2.1 or any later version) as published by the Free Software Foundation.

## RELATED

**Regex.compile (3kaya)**