srowen commented on code in PR #36457: URL: https://github.com/apache/spark/pull/36457#discussion_r866781006
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala: ########## @@ -642,7 +642,7 @@ case class RegExpReplace(subject: Expression, regexp: Expression, rep: Expressio } val source = s.toString() val position = i.asInstanceOf[Int] - 1 - if (position < source.length) { + if (position < source.length || (position == 0 && source.equals(""))) { Review Comment: If position is 0, then the check is currently true in all cases except `source.length == 0` (empty string, right?). Your change makes it true in this case too when position is 0. I think both versions do that? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org