Vim (cross-platform) supports ability to restore from the "swap" file (by default, AFAIK, but that may very well be a special configuration decision by my distr

Vim (cross-platform) supports ability to restore from the "swap" file (by default, AFAIK, but that may very well be a special configuration decision by my distro). If your system crashes or you lose power while editing foo.src, it will leave the swap file behind, which is eagerly written to disk while editing and only removed when the process shuts down gracefully. When you bring your system back up and try to edit foo.src again, you'll get a message "Swap file ".foo.src.swp" already exists!" and prompt you for whether you'd like to recover it or not. Any unsaved changes you made will be reconstructed from swap, rendering the file in the same state it was before. Vim also supports a closely related concept "sessions", which you can force with ":mks" and restore with the "-S" flag. This will re-open whatever files you had open at the time, in the same layout, and more. What would be interesting to see are "super swap files" that are passively created (like ordinary swap files, requiring no intervention) but do everything that session files do and more, like preserving movements, markers, undo history try, etc. -- essentially getting you back to exactly what you had at the time of the interruption.