# Cheatsheet

Default Vim/Neovim bindings and commands worth remembering.

## Insert mode

- `<C-T>`: indent (`:h i_CTRL-T`)
- `<C-D>`: un-indent (`:h i_CTRL-D`)

## Normal mode

- `H` / `M` / `L`: jump to highest / middle / lowest line in window
- `<count?><C-E>`: scroll window down `<count>` lines (`:h CTRL-E`)
- `<count?><C-Y>`: scroll window up `<count>` lines (`:h CTRL-Y`)
- `<C-A>`: increment
- `<C-X>`: decrement
- `<C-w>H` / `J` / `K` / `L`: move window left / down / up / right
- `gq{motion}`: format word-wrap over `{motion}`
- `{Visual}gq`: format word-wrap of the visual selection
- `gqq`: format word-wrap of the current line
- `q:`: open the command-line window (edit and re-run past `:` commands;
  `<CR>` executes the line, `:q` closes)
- `q/` / `q?`: same, for forward / backward search history

## Cmdline mode

- `<C-f>`: open the command-line window for the cmdline being typed
  (`'cedit'`, default `<C-f>`). Same window as `q:` but reached without
  leaving cmdline mode.

## Commands

### Quickfix list

- `:make`: run `makeprg`, put output in the quickfix list
- `:grep`: run `grepprg`, put results in the quickfix list
- `:helpgrep {pattern}`: search all help files, put matches in the quickfix
  list
- `:cex {expr}`: build a quickfix list from `{expr}` and jump to the first
  entry, e.g. `:cex system('make')`
- `:cgete {expr}`: like `:cex` but don't jump to the first entry
- `:copen`: open the quickfix window
- `:cdo {cmd}`: run `{cmd}` on each valid quickfix entry. Equivalent to:

  ```
  :cfirst
  :{cmd}
  :cnext
  :{cmd}
  ...
  ```

- `:cfdo {cmd}`: like `:cdo` but once per file
- `:cn` / `:cp`: next / previous entry that includes a filename (bound to
  `]q` / `[q`)
- `:cnf` / `:cpf`: next / previous entry in a different file (bound to
  `]<C-q>` / `[<C-q>`)
- `:clast` / `:crewind`: last / first entry (bound to `]Q` / `[Q`)
- `:cc [num]`: jump to entry `[num]`

### Location list

The location list is per-window. Otherwise it mirrors the quickfix commands.

- `:lmake` / `:lgrep`: like `:make` / `:grep` but into the location list
- `:lex {expr}` / `:lgete {expr}`: like `:cex` / `:cgete`
- `:lopen`: open the location-list window
- `:ldo {cmd}` / `:lfdo {cmd}`: like `:cdo` / `:cfdo`
- `:lne` / `:lp`: next / previous entry (bound to `]l` / `[l`)
- `:lnf` / `:lpf`: next / previous entry in a different file (bound to
  `]<C-l>` / `[<C-l>`)
- `:llast` / `:lrewind`: last / first entry (bound to `]L` / `[L`)
- `:ll [num]`: jump to entry `[num]`

### Editing

- `@:`: repeat last command-line
- `:s/foo/bar/`: substitute the first match in the current line
- `:s/foo/bar/g`: all matches in the current line
- `:%s/foo/bar/g`: all matches in the buffer
- `:%s/foo/bar/gc`: all matches in the buffer, prompting per match

### Misc

- `:diffsplit <other-file>`: open a diff split
- `:lua << EOF ... EOF`: lua heredoc, e.g.

  ```vim
  :lua << EOF
  local tbl = {1, 2, 3}
  for k, v in ipairs(tbl) do
    print(v)
  end
  EOF
  ```