(Neo)Vim

Rename a buffer without write

f[ile] {name}

Write a buffer with a new file name

`:sav[eas] {name}

Open or write a file and ensure all ancestor directories are created

e[dit] ++p w[rite] ++p

Open related file under cursor in a new window

<C-w><C-f>

Assign a local arguments list to a window

:argl[ocal] {arglist}

Then revert back to global argument list

:arg[global]

Or assign a copy of the global argument list to a window

:argl[ocal]

Paste Register from Insert mode

<C-r> {register}