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    <p>Nothing built into Excel. VBScript has built-in support and can be called from VBA. More info <a href="http://www.regular-expressions.info/vbscript.html" rel="noreferrer" title="VBScript RegExp Object">available here</a>. You can call the object using late binding in VBA. I've included a few functions that I put together recently. Please note that these are not well-tested and may have some bugs, but they are pretty straightforward.</p> <p>This should at least get you started:</p> <pre><code>'---------------------------------------------------------------------------------------vv ' Procedure : RegEx ' Author : Mike ' Date : 9/1/2010 ' Purpose : Perform a regular expression search on a string and return the first match ' or the null string if no matches are found. ' Usage : If Len(RegEx("\d{1,2}[/-]\d{1,2}[/-]\d{2,4}", txt)) = 0 Then MsgBox "No date in " &amp; txt ' : TheDate = RegEx("\d{1,2}[/-]\d{1,2}[/-]\d{2,4}", txt) ' : CUSIP = Regex("[A-Za-z0-9]{8}[0-9]",txt) '--------------------------------------------------------------------------------------- '^^ Function RegEx(Pattern As String, TextToSearch As String) As String 'vv Dim RE As Object, REMatches As Object Set RE = CreateObject("vbscript.regexp") With RE .MultiLine = False .Global = False .IgnoreCase = False .Pattern = Pattern End With Set REMatches = RE.Execute(TextToSearch) If REMatches.Count &gt; 0 Then RegEx = REMatches(0) Else RegEx = vbNullString End If End Function '^^ '--------------------------------------------------------------------------------------- ' Procedure : RegExReplace ' Author : Mike ' Date : 11/4/2010 ' Purpose : Attempts to replace text in the TextToSearch with text and back references ' from the ReplacePattern for any matches found using SearchPattern. ' Notes - If no matches are found, TextToSearch is returned unaltered. To get ' specific info from a string, use RegExExtract instead. ' Usage : ?RegExReplace("(.*)(\d{3})[\)\s.-](\d{3})[\s.-](\d{4})(.*)", "My phone # is 570.555.1234.", "$1($2)$3-$4$5") ' My phone # is (570)555-1234. '--------------------------------------------------------------------------------------- ' Function RegExReplace(SearchPattern As String, TextToSearch As String, ReplacePattern As String, _ Optional GlobalReplace As Boolean = True, _ Optional IgnoreCase As Boolean = False, _ Optional MultiLine As Boolean = False) As String Dim RE As Object Set RE = CreateObject("vbscript.regexp") With RE .MultiLine = MultiLine .Global = GlobalReplace .IgnoreCase = IgnoreCase .Pattern = SearchPattern End With RegExReplace = RE.Replace(TextToSearch, ReplacePattern) End Function '--------------------------------------------------------------------------------------- ' Procedure : RegExExtract ' Author : Mike ' Date : 11/4/2010 ' Purpose : Extracts specific information from a string. Returns empty string if not found. ' Usage : ?RegExExtract("(.*)(\d{3})[\)\s.-](\d{3})[\s.-](\d{4})(.*)", "My phone # is 570.555.1234.", "$2$3$4") ' 5705551234 ' ?RegExExtract("(.*)(\d{3})[\)\s.-](\d{3})[\s.-](\d{4})(.*)", "My name is Mike.", "$2$3$4") ' ' ?RegExReplace("(.*)(\d{3})[\)\s.-](\d{3})[\s.-](\d{4})(.*)", "My name is Mike.", "$2$3$4") ' My name is Mike. '--------------------------------------------------------------------------------------- ' Function RegExExtract(SearchPattern As String, TextToSearch As String, PatternToExtract As String, _ Optional GlobalReplace As Boolean = True, _ Optional IgnoreCase As Boolean = False, _ Optional MultiLine As Boolean = False) As String Dim MatchFound As Boolean MatchFound = Len(RegEx(SearchPattern, TextToSearch)) &gt; 0 If MatchFound Then RegExExtract = RegExReplace(SearchPattern, TextToSearch, PatternToExtract, _ GlobalReplace, IgnoreCase, MultiLine) Else RegExExtract = vbNullString End If End Function </code></pre>
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    1. POHow do I get regex support in excel via a function, or custom function?
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    1. CO+1 Great, thanks -- just a quick question before I attempt to use the code (which looks super, thanks) -- what system did you use this on? I'm on Window 7, Office 2010 using 64-bit. Again, thanks!
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    2. COWindows 7 64-bit, Office XP. The `vbscript.regexp` object ships with windows, not office, so it should work fine for you.
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    3. COAwesome, thank you!
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      1. USArtem Koshelev
 

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