Vim: Ctrl-R in Insert Mode

ctrl-r in Insert Mode is pretty useful.

It inserts text based on your current vim context.

Many of these commands work with registers, so it may be worth getting your head round thoseā€¦.

Ctrl-R Shortcut What it does
ctrl-r % inserts filename
ctrl-r : inserts last command
ctrl-r / inserts last search
ctrl-r = inserts evaluated sum (eg. 2+3)
ctrl-r [a-z 0-9 key] inserts text from register

Hope they help!