Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
mgi

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r"(?mi)(?:\[?color=#[0-9a-f]{6}]?)|(?:\[?color=rgb\(\d{1,3}, \d{1,3}, \d{1,3}\)]?)|\[?\/color]?").unwrap(); let string = "[color=#FF0000].[/color] content content content content content content [color=#FF0000]content [/color]content content[color=#FF0000], [/color]content content. content content content content [color=#FF0000],[/color] content content content. content [color=#FF0000]content[/color] content content content [color=#FF0000],[/color][color=#FF0000]content[/color] content [color=#FF0000],[/color][color=#FF0000]content content content content content[/color], content content content content content content content content. content content[color=#FF0000]-[/color] content content content content [color=#FF0000]content[/color] content ? content content content content content content content content content content content content content [color=#FF0000]-[/color]content 1 июня[color=#FF0000], [/color]например или нет как начало отпуска? [color=#FF0000]content content content content content.Расставляйте запятые,чтобы предложение не было сплошным набором слов. content content content content -content или вашего друга?А то по вашей манере написания это непонятно.content.[/color[color=#FF0000][color=#FF0000][color=#FFFF80][/color] j6y7 [/color dsad klkl;o /color] yuuyu colortest /color color. dsadas opopp [CENTER][B][SIZE=7]lorem psum text.[/SIZE][/B] [SIZE=7] [B]lorem psum text lorem psum text lorem psum text, lorem psum text lorem psum text lorem psum text. [/B] [B]lorem psum text lorem psum text lorem psum text lorem psum text lorem psum text[/B] [B]lorem psum text lorem psum text:[/B] [COLOR=rgb(65, 168, 95)][B]- lorem psum text lorem psum text lorem psum text [/B][/SIZE] [B][COLOR=rgb(65, 168, 95)][SIZE=7]- lorem psum text lorem psum text lorem psum text [/SIZE][/B] [SIZE=7][B]- lorem psum text lorem psum text lorem psum text lorem psum text[/B] [COLOR=rgb(147, 101, 184)] [ATTACH type=\"full\"]1653[/ATTACH] [B]lorem psum text lorem psum text[/B] [COLOR=rgb(147, 101, 184)] [B]lorem psum text lorem psum text lorem psum text lorem psum text lorem psum text lorem psum text. lorem psum text lorem psum text lorem psum text lorem psum text.[/B] [COLOR=rgb(235, 107, 86)][B]lorem psum text lorem psum text lorem psum textlorem psum text: [URL unfurl=\"true\"]https://domain.com[/URL] lorem psum text lorem psum text lorem psum text lorem psum text lorem psum text lorem psum text[/B][COLOR=rgb(147, 101, 184)][B] lorem psum text lorem psum text lorem psum text lorem psum text.[/B] [COLOR=rgb(251, 160, 38)][B]lorem psum text lorem psum text lorem psum text lorem psum text lorem psum text. [/B] [/SIZE][COLOR=rgb(251, 160, 38)][COLOR=rgb(251, 160, 38)][COLOR=rgb(251, 160, 38)][COLOR=rgb(251, 160, 38)][/CENTER][COLOR=rgb(251, 160, 38)][COLOR=rgb(251, 160, 38)][COLOR=rgb(251, 160, 38)][COLOR=rgb(251, 160, 38)]"; let substitution = ""; // result will be a String with the substituted value let result = regex.replace_all(string, substitution); println!("{}", result); }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/