Regular Expressions 101

(?s)applies the following effective flags to the remainder of the pattern: s

s modifier: single line. Allows a dot to match line terminators

<!DOCTYPE html>the literal text <!DOCTYPE html> (case sensitive)

.+?any character, repeated at least once

<body>the literal text <body> (case sensitive)

(?-s)applies the following effective flags to the remainder of the pattern:

s modifier: -single line. A dot does not match line terminators

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?s)<!DOCTYPE html>.+?<body>(?-s)

New

<!DOCTYPE html>


<meta charset="utf-8">
<meta name="generator" content="pandoc">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
<title></title>
<style>code{white-space: pre;}</style>



<![endif]-->;

<body>
afterwards