#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "(?m)(?<!_)_{1,2}(?=_[^_])|(?<=\.jav)a$"
Local $sString = "remote_execute___jenkin%.java" & @CRLF & _
"remtoe__plat_jenk.java" & @CRLF & _
"remtoe_plat_jenk.java" & @CRLF & _
"remtoe___plat_jenk.testa" & @CRLF & _
"remote_execute____jenkin%.java"
Local $sSubst = ""
Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst)
MsgBox($MB_SYSTEMMODAL, "Result", $sResult)
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