How do you access the last executed command in Vim?
:@:
The : register stores the last command-line command.
Category: registers
How do you access the last inserted text in Vim?
<C-r>.
In insert mode, .
What is the difference between register 0 and register 1 in Vim?
"0p vs "1p
Register 0 always contains the last yanked text.
How do you paste from a register with automatic indentation?
"a]p
Use ]p after specifying a register to paste with adjusted indentation.
How do you insert the current filename from a register?
<C-r>%
In insert mode, % inserts the current filename.
How do you retrieve a register's contents in Vimscript?
:echo getreg('a')
Use getreg('a') to get the contents of register a as a string.
How do you paste from a specific register while in insert mode?
<C-r>a
In insert mode, press followed by the register name.
How do you use the expression register to evaluate Vimscript?
<C-r>=expand('%:t')<CR>
In insert mode, = opens the expression register.
How do you use registers to exchange two pieces of text?
"adiw then move, "aP and diw
Delete the first word into register a with "adiw, move to the second word, paste register a before with "aP, then delete the remaining original.
How do you use the expression register to insert a calculation?
<C-r>=42*7<CR>
In insert mode, press = to access the expression register, type a math expression like 42*7, and press Enter to insert the result (294).
How do you change the case of text stored in a register?
:let @a = toupper(@a)
Use Vimscript functions toupper() or tolower() with :let @a = toupper(@a) to convert the case of the entire register contents.
How do you use the alternate file register?
<C-r>#
The # register holds the alternate (previously edited) filename.
How do you delete text without affecting any register?
"_dd
Use the black hole register " before a delete command.
How do I paste from a register in the command line?
<C-r>{reg} in command line
While on the : command line, pressing followed by a register name inserts that register's contents.
How do I copy the entire current line to the system clipboard?
"+yy
The "+yy command yanks the current line directly to the system clipboard register, making it available for pasting in other applications.
How do I access the alternate file register?
"# register
The # register contains the name of the alternate file — the previously edited file in the current window.
How do I copy the contents of one register to another?
:let @b = @a
The :let @b = @a command copies the contents of register a into register b.
How do I delete a word and save it to a specific register?
"adiw
The "adiw command deletes the inner word under the cursor and stores it in register a.
How do I copy and paste to the system clipboard?
"+y and "+p
The "+ register is linked to the system clipboard.
How do I access and reuse the last search pattern?
"/ register
The / register contains the most recent search pattern.