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

/
/
gms

Test String

Code Generator

Language

Generated Code

re = /!!mstart!!(.*)!!mend!!/m str = '!!mstart!! <tr style=\'mso-yfti-irow:6\'> <td class="hidden" width="100%" colspan=6 valign=top style=\'width:100.0%;border:solid windowtext 1.0pt; border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt; background:#FBE4D5;mso-background-themecolor:accent2;mso-background-themetint: 51;padding:.1in 0in 0in 0in\'> <p class=MsoNormal style=\'margin-bottom:12.0pt;tab-stops:162.75pt\'><span style=\'font-size:18.0pt;font-family:"Calibri Light",sans-serif;mso-ascii-theme-font: major-latin;mso-hansi-theme-font:major-latin;mso-bidi-theme-font:major-latin; color:black;mso-color-alt:windowtext\'><span style=\'mso-spacerun:yes\'> </span>Mailing Projects</span><span style=\'font-size:18.0pt;font-family:"Calibri Light",sans-serif; mso-ascii-theme-font:major-latin;mso-hansi-theme-font:major-latin;mso-bidi-theme-font: major-latin\'><o:p></o:p></span></p> <table class=MsoTableGrid border=1 cellspacing=0 cellpadding=0 width="100%" style=\'border-collapse:collapse;mso-table-layout-alt:fixed;border:none; mso-border-alt:solid windowtext .5pt;mso-yfti-tbllook:1184;mso-padding-alt: .1in .1in .1in .1in\'> <tr style=\'mso-yfti-irow:0;mso-yfti-firstrow:yes\'> <td width=227 colspan=2 valign=top style=\'width:169.9pt;border-top:solid windowtext 1.0pt; border-left:none;border-bottom:none;border-right:solid windowtext 1.0pt; mso-border-top-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Postal Service:<o:p></o:p></p> </td> <td width=123 valign=top style=\'width:92.6pt;border-top:solid windowtext 1.0pt; border-left:none;border-bottom:none;border-right:solid windowtext 1.0pt; mso-border-left-alt:solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Postage Paid by:<o:p></o:p></p> </td> <td width=345 colspan=2 valign=top style=\'width:258.8pt;border-top:solid windowtext 1.0pt; border-left:none;border-bottom:none;border-right:solid windowtext 1.0pt; mso-border-left-alt:solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Package Components:<o:p></o:p></p> </td> <td width=345 colspan=3 valign=top style=\'width:258.85pt;border:none; border-top:solid windowtext 1.0pt;mso-border-left-alt:solid windowtext .5pt; mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Package Dimensions (inches):<o:p></o:p></p> </td> </tr> <tr style=\'mso-yfti-irow:1\'> <td width=227 colspan=2 valign=top style=\'width:169.9pt;border-top:none; border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-bottom-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <ul style=\'margin-top:0in\' type=disc> <li class=MsoListParagraph style=\'margin-left:0in;mso-list:l1 level1 lfo2\'>$PostalService$<o:p></o:p></li> </ul> </td> <td width=123 valign=top style=\'width:92.6pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-left-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-bottom-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> $PostagePaidBy$ </td> <td width=345 colspan=2 valign=top style=\'width:258.8pt;border-top:none; border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-left-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-bottom-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>$PackageComponents$<o:p></o:p></p> </td> <td width=345 colspan=3 valign=top style=\'width:258.85pt;border:none; border-bottom:solid windowtext 1.0pt;mso-border-left-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-bottom-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>$PackageDimensions$<o:p></o:p></p> </td> </tr> <tr style=\'mso-yfti-irow:2\'> <td width=1040 colspan=8 valign=top style=\'width:780.15pt;border:none; border-bottom:solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt; mso-border-top-alt:solid windowtext .5pt;mso-border-bottom-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal><b><span style=\'font-size:14.0pt;font-family:"Calibri Light",sans-serif; mso-ascii-theme-font:major-latin;mso-hansi-theme-font:major-latin; mso-bidi-theme-font:major-latin\'>Package Detail<o:p></o:p></span></b></p> </td> </tr> <tr style=\'mso-yfti-irow:3\'> <td width=173 valign=top style=\'width:129.45pt;border:none;border-right: solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt;mso-border-top-alt: solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Package 1<o:p></o:p></p> </td> <td width=177 colspan=2 valign=top style=\'width:133.05pt;border:none; border-right:solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Package 2<o:p></o:p></p> </td> <td width=173 valign=top style=\'width:129.4pt;border:none;border-right: solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt: solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt: solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Package 3<o:p></o:p></p> </td> <td width=173 valign=top style=\'width:129.4pt;border:none;border-right: solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt: solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt: solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Package 4<o:p></o:p></p> </td> <td width=173 colspan=2 valign=top style=\'width:129.4pt;border:none; border-right:solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Package 5<o:p></o:p></p> </td> <td width=173 valign=top style=\'width:129.45pt;border:none;mso-border-top-alt: solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;padding: .1in .1in .1in .1in\'> <p class=MsoNormal>Package 6<o:p></o:p></p> </td> </tr> <tr style=\'mso-yfti-irow:4\'> <td width=173 valign=top style=\'width:129.45pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-bottom-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <ul style=\'margin-top:0in\' type=disc> $Package1$ </ul> </td> <td width=177 colspan=2 valign=top style=\'width:133.05pt;border-top:none; border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-left-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-bottom-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <ul style=\'margin-top:0in\' type=disc> $Package2$ </ul> </td> <td width=173 valign=top style=\'width:129.4pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-left-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-bottom-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <ul style=\'margin-top:0in\' type=disc> $Package3$ </ul> </td> <td width=173 valign=top style=\'width:129.4pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-left-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-bottom-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <ul style=\'margin-top:0in\' type=disc> $Package4$ </ul> </td> <td width=173 colspan=2 valign=top style=\'width:129.4pt;border-top:none; border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-left-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-bottom-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <ul style=\'margin-top:0in\' type=disc> $Package5$ </ul> </td> <td width=173 valign=top style=\'width:129.45pt;border:none;border-bottom: solid windowtext 1.0pt;mso-border-left-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-bottom-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <ul style=\'margin-top:0in\' type=disc> $Package6$ </ul> </td> </tr> <tr style=\'mso-yfti-irow:5\'> <td width=173 valign=top style=\'width:129.45pt;border:none;border-right: solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt;mso-border-top-alt: solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Package Weight <span style=\'font-size:8.0pt\'>(estimated)</span>:<o:p></o:p></p> </td> <td width=177 colspan=2 valign=top style=\'width:133.05pt;border:none; border-right:solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Data Work Required:<o:p></o:p></p> </td> <td width=173 valign=top style=\'width:129.4pt;border:none;border-right: solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt: solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt: solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Operations Required:<o:p></o:p></p> </td> <td width=259 colspan=2 valign=top style=\'width:194.1pt;border:none; border-right:solid windowtext 1.0pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-top-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Mailing Instructions:<o:p></o:p></p> </td> <td width=259 colspan=2 valign=top style=\'width:194.15pt;border:none; mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>Additional Comments:<o:p></o:p></p> </td> </tr> <tr style=\'mso-yfti-irow:6;mso-yfti-lastrow:yes\'> <td width=173 valign=top style=\'width:129.45pt;border:none;border-right: solid windowtext 1.0pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>$WeightOfPackage$<o:p></o:p></p> </td> <td width=177 colspan=2 valign=top style=\'width:133.05pt;border:none; border-right:solid windowtext 1.0pt;mso-border-left-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> $RequiredDataWork$ </td> <td width=173 valign=top style=\'width:129.4pt;border:none;border-right: solid windowtext 1.0pt;mso-border-left-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>$OperationsRequired$<o:p></o:p></p> </td> <td width=259 colspan=2 valign=top style=\'width:194.1pt;border:none; border-right:solid windowtext 1.0pt;mso-border-left-alt:solid windowtext .5pt; mso-border-left-alt:solid windowtext .5pt;mso-border-right-alt:solid windowtext .5pt; padding:.1in .1in .1in .1in\'> <p class=MsoNormal>$SpecialMailingInstructions$<o:p></o:p></p> </td> <td width=259 colspan=2 valign=top style=\'width:194.15pt;border:none; mso-border-left-alt:solid windowtext .5pt;padding:.1in .1in .1in .1in\'> <p class=MsoNormal>$MailAdditionalComments$<o:p></o:p></p> </td> </tr> <![if !supportMisalignedColumns]> <tr height=0> <td width=162 style=\'border:none\'></td> <td width=32 style=\'border:none\'></td> <td width=123 style=\'border:none\'></td> <td width=159 style=\'border:none\'></td> <td width=146 style=\'border:none\'></td> <td width=86 style=\'border:none\'></td> <td width=60 style=\'border:none\'></td> <td width=151 style=\'border:none\'></td> </tr> <![endif]> </table> <p class=MsoNormal><o:p></o:p></p> </td> </tr> !!mend!!' # Print the match result str.scan(re) do |match| puts match.to_s end

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