#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?m)!::(?<FinancialProcessor>\d+)\~(?<FormatVersion>\d+)\~(?<TransactionGroupId>\d+)\~(?<SharedSnowFlake>SHRD\w+)\~(?<Acct1PurposeTypeId>\d)(?<Acct1SignType>\W)(?<Acct1PublicId>\w{32})\~(?<Acct2>(?<Acct2PurposeTypeId>\d)(?<Acct2SignType>\W)(?<Acct2PublicId>\w{32}))?\~(?<Acct3>(?<Acct3PurposeTypeId>\d)(?<Acct3SignType>\W)(?<Acct3PublicId>\w{32}))?\~(?<CardTransactionTypeId>\d+)?\~(?<TransactionAccountingId>.{1,50})?\~(?<FeeScheduleId>\d+)?::!"
Local $sString = "!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~0+1ca4529ec1d74243b87da4fbb89e5455~0$b316bb02ed4e4246a1f269d135cd27c7~10~BlahBlah Blabh~1002::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~0+1ca4529ec1d74243b87da4fbb89e5455~0$b316bb02ed4e4246a1f269d135cd27c7~10~~1002::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~0+1ca4529ec1d74243b87da4fbb89e5455~0$b316bb02ed4e4246a1f269d135cd27c7~10~BlahBlah Blabh~::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~0+1ca4529ec1d74243b87da4fbb89e5455~0$b316bb02ed4e4246a1f269d135cd27c7~10~~::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~0+1ca4529ec1d74243b87da4fbb89e5455~0$b316bb02ed4e4246a1f269d135cd27c7~~~::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~0+1ca4529ec1d74243b87da4fbb89e5455~~~~::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~~~~~::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~~~~~1002::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~~~~BlahBlah Blabh~1002::!" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~~~10~BlahBlah Blabh~1002::!" & @CRLF & _
"In the !::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~0+1ca4529ec1d74243b87da4fbb89e5455~0$b316bb02ed4e4246a1f269d135cd27c7~10~BlahBlah Blabh~1002::! middle of a string" & @CRLF & _
"!::1~1~293328075~SHRD05G5E4B7SA8I0~0-23e744f20f034caab6d5e4ca8a0e5e24~0+1ca4529ec1d74243b87da4fbb89e5455~0$b316bb02ed4e4246a1f269d135cd27c7~10~BlahBlah Blabh~1002::! - Transferred From Shiny Black Box Account"
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