Excel VBA - Make cell contents null if cell contains only spaces

How can I do the following w/ VBA:
1) For a given range, make contents of cell "null" if cell contains only spaces.
2) For a given range, replace multiple concatenated space characters with single space

Thanks, --Andres
AndresHernandoAsked:
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petr_hlucinCommented:
1) Why don't you use TRIM function? You can e.g. create the modified data on another sheet and spread this function on the area as you desire (taking parameters from the original sheet).
2) If the spaces are in the beginning of the string or at its end TRIM(...) & " " probably solves the problem. Otherwise use RegexReplace(..., "[ ]*", " ") VBA function below:

Function RegexReplace(ReplaceIn, _
        ReplaceWhat As String, ReplaceWith As String, Optional IgnoreCase As Boolean = False)
    Dim RE As Object
    Set RE = CreateObject("vbscript.regexp")
    RE.IgnoreCase = IgnoreCase
    RE.Pattern = ReplaceWhat
    RE.Global = True
    RegexReplace = RE.Replace(ReplaceIn, ReplaceWith)
End Function

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Rory ArchibaldCommented:
1.
Dim rngCell as Range
For each rngCell in Range("A1:A100").Cells
   If len(trim(rngcell.value)) = 0 then rngCell.Clearcontents
next rngcell

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2.
Dim rngCell as Range
For each rngCell in Range("A1:A100").Cells
   If instr(rngcell.value, " ") > 0 then rngcell.value = application.trim(rngCell.value)
next rngcell

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AndresHernandoAuthor Commented:
Rory, that's exactly what I needed.  Thanks!
Petr, thanks for your input.  I went with Rory's because it seems more straight forward and easier for me to understand.

Thanks again, --Andres
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