<regex>: Limit backreference parsing to single digit for basic regular expressions - #5167

<regex>: Limit backreference parsing to single digit for basic regular expressions#5167

Stephan T. Lavavej (StephanTLavavej) merged 5 commits into

microsoft:mainmicrosoft/STL:mainfrom

muellerj2:fix-basic-backreferencesmuellerj2/STL:fix-basic-backreferencesCopy head branch name to clipboard