#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?m)^(?<first>[^\t]+)\t(?<second>[^\t]+)(\t|\t")(?<message>(.*))("\t|\t)\d{8}\t"
Local $sString = "ABCDEFG 11/21/16 11:14 PM The request channel timed out while waiting for a reply after 00:00:17.9375000. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a long 27332747 HOST12345 5 Function1 12345678901234567890123456" & @CRLF & _
"ABCDEFG 11/21/16 11:13 PM The request channel timed out while waiting for a reply after 00:00:18. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeo 16964220 HOST23456 5 Function2 23456789012345678901234567" & @CRLF & _
"ABCDEFG 11/21/16 5:19 PM " " 12345678 HOST23456 5 Function2 23456789012345678901234567" & @CRLF & _
"ABCDEFG 11/21/16 5:19 PM " " 12345678 HOST23456 5 Function2 23456789012345678901234567" & @CRLF & _
""
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH)
Local $aFullArray[0]
For $i = 0 To UBound($aArray) -1
_ArrayConcatenate($aFullArray, $aArray[$i])
Next
$aArray = $aFullArray
; Present the entire match result
_ArrayDisplay($aArray, "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 AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm