Whenever you try and open a file that’s already open in vi you receive the interminable message that ends:
Swap file “.la.swp” already exists!
[O]pen Read-Only, (E)dit anyway, (R)ecover, (Q)uit, (A)bort:
You have to scroll to the end of the message and then choose an option. And I always choose to abort.
I wrote this little shell script that doesn’t force you to choose one of the options but just aborts with a short helpful message.
if [ -e ".$1.swp" ] then echo "A swapfile for $1 exists. Already open?" else vi "$1" fi
Then just alias vi or vim or whatever to the shell script and no more annoying message.
(You can do this within vim with a setting but I have found that to be less reliable and less useful. Plus this way you can use vi and get the old behaviour should you need it.)