bug#7475: I wish query-replace-regexp would use perl regexps

[jidanni]

I wish query-replace-regexp would use perl regexps.
It is already hard enough to get the region and regexp right, and then
one has to think 'how do I write that in old fashioned regexp language."
Why can't it be rigged up to just send it to the current perl on the machine.
As it is I am already just saying forget it and 'outsourcing' more
complicated jobs to batch scripts.