#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "(?m)([^\d]|^)(\d)([^\w]|\..+|$)"
Local $sString = "файл1.ssdf" & @CRLF & _
"файл22.sdf" & @CRLF & _
"файл1-часть02.asd" & @CRLF & _
"sdfsd01" & @CRLF & _
"sdfsdf11-sdfsd7" & @CRLF & _
"sfdsd1sdfsdsdf003"
Local $sSubst = "$10$2$3"
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