How to automatically save files on lose focus in Emacs

Question

Is it possible to configure Emacs, so that it saves all files when the emacs window loses focus?

Answer 1

You can use `auto-save-interval' to save every n characters you type. Mine is set to 100. So about every 2-3 lines of code, maybe?

auto-save-interval is a variable defined in `C source code'. Its value is 100

Documentation: *Number of input events between auto-saves. Zero means disable autosaving due to number of characters typed.

You can customize this variable.

This doesn't answer your original question; it's just a way to achieve something similar.