Q:

What text editors let you view and edit multiple files in a single long page (similar to Scrivener's Scrivenings mode)?

What text editors allow you to view and edit multiple files as though they were a single long page?
So, instead of having to switch to a different tab or window to edit a different file, you can just scroll to a different location in the same window to edit a different file.
The only editor like that I know of so far is Scrivener, with its Scrivenings Mode:
http://www.simplyscrivener.com/features/scrivenings-mode/
Are there any others? I'd especially like to find a source code editor which has a mode like that.
Any platform is fine - Linux, Windows, Mac, or anything else.
Thanks for any help!

A:

I finally managed to make most of the modifications and additions I wanted to make to Magnar Sveen's incredibly useful "multifiles.el" add-on for the GNU Emacs editor.
The result: https://github.com/Apollia/multifiles-apmod.el
My version has some problems (see the documentation), and anyone who tries to use it should be very cautious.
But, it mostly does what I want, so I'm very happy with it so far.
.
After learning a bit about the Emacs Lisp programming language and how to customize Emacs, Emacs is now more comfortable for me to use than even my previous favorite editors Notepad++ and Geany.  But getting to this point was quite a time-consuming struggle.
Emacs is probably the solution I'm going to stick with. But, please feel free to post more suggestions.
Different things work better for different people, and I'm guessing the majority of people (especially non-programmers) would probably give up on Emacs after about 5 minutes, just as I did in the past.
Thanks again for everyone's help!

