Regular Expressions in Nano

[bpoi]

Hi,

I have a very basic question about regular expressions in nano that's not in the nano user's guide (at the GNU website), and the help-nano email list looks basically dormant.

How do you use them when doing replacements?

For example, suppose I have some code where "matrix ..." appears left-justified, and I want to replace it with two tabs and then the "matrix ..."

I've figured out that with regular expressions enabled, I can use a regular expression for the search part by typing in