Regular Expressions 101

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

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

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

Group 1({< file [^>]* >}.*?{</ ?file >})

{< file the literal text {< file (case sensitive)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

>}the literal text >}

.*?any character, repeated any number of times

{</the literal text {</

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

file >}the literal text file >} (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(?s) *({< file [^>]* >}.*?{</ ?file >})

New

{< file "hello.go" go >}
package main

import "fmt"

func main() {
    fmt.Printf("hello, world\n")
}
{</ file >}