The Atom editor lets me use regular expressions in a find and replace. In Notepad++ there is a checkbox for a dot (.) to match a newline. I wish there was something similar in Atom.
For example I was testing regular expressions in the editor (I love the UI for finding text in Atom) and then using the tested regular expression in a python script.
Right now the only workaround I can think of is to replace any instance of the dot