This is one of those make-or-break features for me. The way that Sublime does this (ctrl+enter for a new line in the find dialog) works pretty well, although it has some buggy implementation (e.g., can’t add a new line to the beginning of existing text). I’d also like to be able to select a multi-line block of text in a file and have it auto-enter into the find dialog when pressing ctrl+F.
I realize that I could use regular expressions and newlines (\n), but that’s kind of a pita.
Very nice editor overall - keep up the great work!