#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?i)<link.*(href=".*?\/abcd\.css")[^>]*>"
Local $sString = "<html data-reactroot="" class="gr__localhost"><head><link rel="stylesheet" href="/dist/qwefqwefqwef.css" /><link rel="stylesheet" href="/dist/abcd.css" /><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1,user-scalable=no"><script type="text/javascript" async="" src="https://www.google-analytics.com/analytics.js"></script><script>window.g_useSSR=true;" & @CRLF & _
" window.g_initialData = {};</script><script>window.routerBase = "/";</script><link rel="stylesheet" href="<script src=" dist="" umi.4c8c3b87.js"vendors.f848cc19.chunk.css"=""><link"
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH)
; Present the entire match result
_ArrayDisplay($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