From 0f26932b66c6a34b1f47904ee2fd55824e2400c2 Mon Sep 17 00:00:00 2001
From: Leaf-Lin <39002973+Leaf-Lin@users.noreply.github.com>
Date: Mon, 14 Dec 2020 13:29:00 +1100
Subject: [PATCH] Improve regexp description

Adding some more text to have it more aligned with https://www.elastic.co/guide/en/elasticsearch/reference/current/regexp-syntax.html
---
 libbeat/docs/regexp.asciidoc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libbeat/docs/regexp.asciidoc b/libbeat/docs/regexp.asciidoc
index 8d138ffc2e1f..8764855e8b73 100644
--- a/libbeat/docs/regexp.asciidoc
+++ b/libbeat/docs/regexp.asciidoc
@@ -48,8 +48,8 @@ The following patterns are supported:
 |[[single-characters]]*Single Characters* 1+|
 |`x`              |single character
 |`.`              |any character
-|`[xyz]`          |character class
-|`[^xyz]`         |negated character class
+|`[xyz]`          |Match any one of the characters in the bracket. Inside the brackets, `-` indicates a range unless `-` is the first character or escaped
+|`[^xyz]`         |A `^` before a character in the brackets negates the character or range. This matches any character except 'x', 'y', or 'z'
 |`[[:alpha:]]`    |ASCII character class
 |`[[:^alpha:]]`   |negated ASCII character class
 |`\d`             |Perl character class