Option to save when closing

[dwaq]

Many text editors give an option to save the file when quitting, if its been modified. You already have most of the logic in CanClose() and Save() to accomplish this. I could write the code if this is a feature you'd be interested in. Just didn't want to change the functionality if you had a reason to keep it as-is.

[zyedidia]

When closing a file with unsaved changes you can now enter s or save which will save and quit.