Vim Registers Cheatsheet

Types of Registers

Register	Description
"0 to "9	Numbered registers. "0 contains last yank, "1-"9 contain last deletes
"a to "z	Named registers for user storage
""	Unnamed register, last delete or yank
"*	Selection register (X11 primary)
"+	Clipboard register
"_	Black hole register (discards text)
"%	Current file name
"#	Alternate file name
":	Last executed command
".	Last inserted text
"=	Expression register for calculations

Using Registers

Command	Description
"ay	Yank into register a
"Ay	Append yank to register a
"ap	Paste from register a
"+y	Yank into clipboard
"+p	Paste from clipboard
:reg	View contents of all registers
:reg a	View contents of register a

Special Register Operations

Command	Description
Ctrl-R a	Insert contents of register a (in insert mode)
Ctrl-R =	Insert result of expression (in insert mode)
:put a	Put contents of register a on new line
q{register}	Record macro into specified register
@{register}	Execute macro from specified register

Tips and Tricks

Use ""p to paste the last deleted or yanked text.
Use "0p to paste the last yanked text, even after a delete operation.
Use "_d to delete text without affecting other registers.
In insert mode, use Ctrl-R % to insert the current file name.
Use "=5*5<CR>p to insert the result of 5*5.
Use :let @a = "some text" to set register a programmatically.

Note: Register operations can be combined with motions and counts. For example, "a3yy yanks 3 lines into register a.