The advance rename should be improved

For the Mode: "Find & Replace", it can't use regular expression, it's not convenient.
for example:
I want to change some file name with number, maybe I need change the "-" to " " before the number
file-01-a.txt -> file 01-a.txt

currently, I need to use "Regulare Express" mode, and input the expression: "(.)-(\d+)(.)" and replace with "\1 \2\3"

if the "Find & Replace" mode can support regular expression, I just need Find "-(\d+)" and replace with " \1"

The second method is very simple, and I don't worry about a very complex regular expression may get an error.

Makes sense to me! o)