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

/
/
gism

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

re = /(inherited )(MgSpeedButton1)(:[ ]TMgSpeedButton)/im str = 'inherited FormOrganizacaoUsuario: TFormOrganizacaoUsuario Left = 208 Top = 179 Caption = \'Organiza\'#231#227\'o\' ClientHeight = 435 ClientWidth = 614 ExplicitWidth = 630 ExplicitHeight = 474 PixelsPerInch = 96 TextHeight = 15 inherited Bv_Top: TBevel Width = 614 ExplicitTop = 59 ExplicitWidth = 628 end inherited Sb_FormPadrao: TStatusBar Top = 410 Width = 614 ExplicitTop = 410 ExplicitWidth = 628 end inherited Pn_BaseToolBar: TPanel Width = 614 Caption = \'Pn_BaseToolBar\' TabOrder = 4 ExplicitWidth = 628 inherited Panel1: TPanel Left = 532 ExplicitLeft = 546 inherited Sb_Procurar: TMgBitBtn LookAndFeel.SkinName = \'\' end end inherited Pn_Aux2: TPanel Width = 1 ExplicitWidth = 15 end inherited Pn_Historico: TPanel Left = 502 ExplicitLeft = 516 inherited Bo_Historico: TMgSpeedButton LookAndFeel.SkinName = \'\' end end inherited Pn_AuxR: TmgPanel Left = 499 BevelOuter = bvNone ExplicitLeft = 834 ExplicitTop = -3 end end inherited Pn_BaseGrid: TPanel Width = 614 Height = 351 ExplicitWidth = 628 ExplicitHeight = 351 inherited SplitterZoom: TMgSplitter Top = 323 Width = 608 ExplicitLeft = 3 ExplicitTop = 283 ExplicitWidth = 621 end inherited Pc_Grid: TmgExtPageControl Width = 608 Height = 320 ExplicitWidth = 622 ExplicitHeight = 320 inherited Ts_Grid: TTabSheet Caption = \'Organiza\'#231#227\'o\' ExplicitWidth = 614 ExplicitHeight = 287 object Tv_Organizacao: TmgTvExplorer Left = 0 Top = 0 Width = 600 Height = 287 Images = Il_Small DataSource = DM_Seguranca.Ds_Usuario_Org_ FieldPK = \'ORG_IN_CODIGO\' OnMontaLinha = Tv_OrganizacaoMontaLinha OnDblClick = Bo_SelecionaClick OnmgAddNode = Tv_OrganizacaomgAddNode Align = alClient Alignment = taLeftJustify BevelOuter = bvNone ParentColor = True ParentShowHint = False ShowHint = True TabOrder = 0 ExplicitWidth = 614 end end inherited Ts_Filtro: TTabSheet ExplicitWidth = 931 ExplicitHeight = 287 inherited Gd_Filtro: TMgDBGrid Width = 600 Height = 287 Font.Color = clBlack Font.Height = -13 Font.Name = \'Calibri\' ExplicitWidth = 931 ExplicitHeight = 287 end end end inherited Pn_Zoom: TmgPanel Top = 323 Width = 608 ExplicitTop = 323 ExplicitWidth = 622 end inherited Pn_Protegido: TmgPanel Top = 328 Width = 608 ExplicitTop = 328 ExplicitWidth = 622 inherited Lb_Leganda: TmgLabel Height = 15 ParentFont = True ExplicitHeight = 15 end end end inherited Pn_BaseTreeView: TPanel Height = 351 TabOrder = 0 ExplicitHeight = 351 end inherited Pn_BaseBotoes: Tc_PanelExpert Width = 608 ExplicitWidth = 622 inherited Pn_BaseBotoesAux: TPanel Width = 437 ExplicitWidth = 451 inherited Bo_Refresh: TMgSpeedButton ExplicitLeft = 143 end inherited Bo_Adicionar: TMgSpeedButton ExplicitLeft = 469 end inherited Bo_Remover: TMgSpeedButton ExplicitLeft = 433 end inherited Bo_Propriedades: TMgSpeedButton LookAndFeel.SkinName = \'\' end inherited Bo_Fechar: TMgSpeedButton Left = 760 Width = 59 ParentFont = False ExplicitLeft = 630 ExplicitWidth = 59 end inherited Bo_Prev: TmgDBBtn ExplicitLeft = 131 end inherited Bo_Next: TmgDBBtn ExplicitLeft = 199 end inherited Bo_Last: TmgDBBtn ExplicitLeft = 263 ExplicitTop = 6 end inherited MgSpeedButton1: TMgSpeedButton TabOrder = 11 ExplicitLeft = 617 end object Bo_Seleciona: TMgSpeedButton AlignWithMargins = True Left = 694 Top = 3 Width = 60 Height = 25 Cursor = crHandPoint Align = alLeft Caption = \'&Seleciona\' Font.Charset = DEFAULT_CHARSET Font.Color = clWindowText Font.Height = -12 Font.Name = \'MS Sans Serif\' Font.Style = [] ParentFont = False ParentShowHint = True TabOrder = 10 OnClick = Bo_SelecionaClick Layout = blGlyphTop Spacing = 6 Colors.Default = 13675044 Colors.DefaultText = clWhite Colors.Normal = 13675044 Colors.NormalText = clWhite Colors.Hot = 9724187 Colors.HotText = clWhite Colors.Pressed = 9724187 Colors.PressedText = clWhite Colors.Disabled = clWhite Colors.DisabledText = 10526880 SpeedButtonOptions.CanBeFocused = False SpeedButtonOptions.Flat = True DropdownArrow = False DropdownArrowWidth = 7 Flat = False HighlightWhenDown = False Opaque = False RepeatDelay = 0 RepeatInterval = 0 MgImagem = siOk ExplicitLeft = 630 end end end inherited Pn_BasePesquisa: TmgPanel Left = 91 end inherited Mn_Principal: TMainMenu inherited miTabela: TMenuItem Caption = \'&Organiza\'#231#245\'es\' end inherited miExibir: TMenuItem inherited miAtualizar: TMenuItem OnClick = nil end end end inherited mgPopupImpressao: TmgPopupMenu Left = 110 Top = 132 end inherited MnPop_Principal: TPopupMenu inherited mi_Atualizar: TMenuItem OnClick = nil end end inherited Im_Protegido: TmgImageList Bitmap = { 494C0101010004006C0010001000FFFFFFFFFF10FFFFFFFFFFFFFFFF424D3600 0000000000003600000028000000400000001000000001002000000000000010 0000000000000000000000000000000000000000000000000000000000000000 000000000000000000001094CE001094CE001094CE001094CE001094CE000000 0000000000000000000000000000000000000000000000000000000000000000 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} end end' subst = '\\1Bo_Help\\3' result = str.gsub(re, subst) # Print the result of the substitution puts 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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html