How do I duplicate a line in Vim?
yyp
The yyp command duplicates the current line by yanking it and immediately pasting it below.
Tag: editing
How do I edit a recorded macro in Vim?
"ap, edit, "ayy
Vim stores macros in registers, which means you can paste a macro's contents into a buffer, edit it as regular text, and yank it back into the register.
How do I enable spell checking in Vim?
:set spell
The :set spell command activates Vim's built-in spell checker, which highlights misspelled words directly in your buffer.
How do I enable syntax highlighting in Vim?
:syntax on
The :syntax on command enables syntax highlighting in Vim, colorizing your code based on the file type.
How do I run a normal mode command on every line matching a pattern?
:g/pattern/normal dd
The :g/pattern/normal {commands} command executes normal mode keystrokes on every line in the file that matches the given pattern.
How do I run a command on every line matching a pattern?
:g/pattern/command
The :g/pattern/command (global) command executes an Ex command on every line in the file that matches the given pattern.
How do I create incrementing number sequences in Vim?
g<C-a>
The g command increments numbers across a visual selection so that each subsequent line gets a progressively higher value.
How do I count the number of matches for a search pattern?
:%s/pattern//gn
The :%s/pattern//gn command counts how many times a pattern appears in the file without making any changes.
How do I delete a word and its surrounding whitespace?
daw
The daw command deletes a word including one side of its surrounding whitespace.
How do I delete all blank lines in a file?
:g/^$/d
The :g/^$/d command deletes every blank line in the file using Vim's powerful global command.
How do I delete an entire line in Vim?
dd
The dd command deletes the entire current line, regardless of where the cursor is positioned on that line.
How do I delete the content inside an HTML tag?
dit
The dit command deletes the text inside the nearest enclosing HTML or XML tag pair without removing the tags themselves.
How do I delete from the cursor to the end of the line?
D
The D command deletes everything from the cursor position to the end of the current line.
How do I delete from the cursor to the end of a word?
de
The de command deletes from the cursor position to the end of the current word.
How do I delete text without overwriting my yank register?
"_d
The "d command deletes text using the black hole register ("), which discards the deleted content instead of storing it.
How do I diff two buffers side by side in Vim?
:windo diffthis
The :windo diffthis command activates Vim's built-in diff mode across all visible windows, highlighting the differences between them.
How do I start typing at the end of a line in Vim?
A
The A command moves the cursor to the end of the current line and enters insert mode.
How do I append text to a register instead of replacing it?
"Ayy
The "Ayy command appends the current line to register a instead of overwriting it.
How do I auto-indent an entire file in Vim?
gg=G
The gg=G command re-indents every line in the current file according to Vim's indentation rules.
How do I run a search and replace across multiple files?
:cfdo %s/old/new/g | update
The :cfdo %s/old/new/g update command performs a search and replace across every file in the quickfix list and saves each one.