'VBA function to replace a substring... if it exists in the full
'string. Checking to see if it exists is very quick. Replacing is
'slow by comparison. So it is wise to check first:
Function IfInReplace$(s$, substr1$, replacement$, Optional CaseSensitivity = vbTextCompare) If InStr(1, s, substr1, CaseSensitivity) Then s = Replace(s, substr1, replacement, , , CaseSensitivity) IfInReplace = s
End Function
'---------------------------------------------------------------------------------------------------
MsgBox IfInReplace("abc123def", "123", "") '<--displays: abcdef