Hi basam001,
Thank you for posting here.
1. What does the link you provided for us? The link I do not find the things related to this thread.
2. Does the regex expression works well?
3. As I know, there is only one regex expression with double $. It used to substitute the substring matched by group number.
Character Description Pattern Replacement pattern Input string Result string
$ number Substitutes the substring matched by group number. \b(\w+)(\s)(\w+)\b $3$2$1 "one two" "two one"
Please provide more details.
Best Regards,
Wendy
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