What would it take to support searching newlines?

[robert-e-davidson3]

I get an error when I select a region with multiple lines and try to search it. The source code makes it clear this is intentional but doesn't explain why. Also, when I add a newline with c-q c-j, it behaves strangely.

I can't find anything about why multiple lines are unsupported for search. The builtin isearch works but there's a reason I use helm-swoop.

Is there some deep reason this is unsupported? If not, can I get some guidance? I'm willing to make the changes myself if it isn't an immense effort.

Thanks!

[alphapapa]

@robert-e-davidson3 FYI, if you want to work on something like this, you might consider using this as a starting point instead of helm-swoop: https://gist.github.com/alphapapa/ce6cf8a85d8a28c3a2f146057772ec8d IME it's much faster (although because of that, I stopped using helm-swoop years ago, so maybe it's improved since then).