Homepage: https://github.com/magnars/multifiles.el
Author: Magnar Sveen
Updated:
View and edit parts of multiple files in one buffer
Bind a key to `mf/mirror-region-in-multifile`, let's say `C-!`. Now mark a part of the buffer and press it. A new \*multifile\* buffer pops up. Mark some other part of another file, and press `C-!` again. This is added to the \*multifile\*. You can now edit the \*multifile\* buffer, and watch the original files change. Or you can edit the original files and watch the \*multifile\* buffer change. **Warning** This API and functionality is highly volatile.