#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "(?m)^(.+)(?<!\\)((?:\\\\)*)(\!\=|(?<!\!|\<|\>)=|\<\=|\>\=)(.+)$"
Local $sString = "name=toto" & @CRLF & _
"tat\=a" & @CRLF & _
"bla\bla=tor" & @CRLF & _
"blood\\=orange" & @CRLF & _
"wrong\\\=cops" & @CRLF & _
"right\\\\=escaping" & @CRLF & _
"extrem\\\\\=slash" & @CRLF & _
"hoho\\\\\\=ho" & @CRLF & _
"is\\\\\\\=magic" & @CRLF & _
"noend=" & @CRLF & _
"" & @CRLF & _
"dou=bl=equal" & @CRLF & _
"ma\=tche!=operation" & @CRLF & _
"is\\!=not" & @CRLF & _
"is<=inferior" & @CRLF & _
"is>=superior" & @CRLF & _
"tha>t=isno<t" & @CRLF & _
"" & @CRLF & _
"-----" & @CRLF & _
"^(.+)((?<!\\)=)(.+)$"
Local $sSubst = "[$1$2] $3 [$4]"
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