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NERD Commenter

Comment functions so powerful—no comment necessary.

Installation

Via Plugin Manager (Recommended)

Vim-Plug

  1. Add Plug 'scrooloose/nerdcommenter' to your vimrc file.
  2. Reload your vimrc or restart
  3. Run :PlugInstall

Vundle or similar

  1. Add Plugin 'scrooloose/nerdcommenter' to your vimrc file.
  2. Reload your vimrc or restart
  3. Run :BundleInstall

NeoBundle

  1. Add NeoBundle 'scrooloose/nerdcommenter' to your vimrc file.
  2. Reload your vimrc or restart
  3. Run `:NeoUpdate``

Pathogen

cd ~/.vim/bundle
git clone https://github.com/scrooloose/nerdcommenter.git

Manual Installation

Unix

(For Neovim, change ~/.vim/ to ~/.config/nvim/.)

curl -fLo ~/.vim/plugin/NERD_Commenter.vim --create-dirs \
  https://raw.githubusercontent.com/scrooloose/nerdcommenter/master/plugin/NERD_commenter.vim
curl -fLo ~/.vim/doc/NERD_Commenter.txt --create-dirs \
  https://raw.githubusercontent.com/scrooloose/nerdcommenter/master/doc/NERD_commenter.txt

Windows (PowerShell)

md ~\vimfiles\plugin
md ~\vimfiles\doc
$pluguri = 'https://raw.githubusercontent.com/scrooloose/nerdcommenter/master/plugin/NERD_commenter.vim'
$docsuri = 'https://raw.githubusercontent.com/scrooloose/nerdcommenter/master/doc/NERD_commenter.txt'
(New-Object Net.WebClient).DownloadFile($pluguri, $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath("~\vimfiles\plugin\NERD_commenter.vim"))
(New-Object Net.WebClient).DownloadFile($docsuri, $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath("~\vimfiles\doc\NERD_commenter.txt"))

Post Installation

Make sure that you have filetype plugins enabled, as the plugin makes use of |commentstring| where possible (which is usually set in a filetype plugin). See |filetype-plugin-on| for details, but the short version is make sure this line appears in your vimrc:

filetype plugin on

Usage

Documentation

Please see the vim help system for full documentation of all options: :help nerdcommenter

Settings

Several settings can be added to your vimrc to change the default behavior. Some examples:

" Add spaces after comment delimiters by default
let g:NERDSpaceDelims = 1

" Use compact syntax for prettified multi-line comments
let g:NERDCompactSexyComs = 1

" Align line-wise comment delimiters flush left instead of following code indentation
let g:NERDDefaultAlign = 'left'

" Set a language to use its alternate delimiters by default
let g:NERDAltDelims_java = 1

" Add your own custom formats or override the defaults
let g:NERDCustomDelimiters = { 'c': { 'left': '/**','right': '*/' } }

" Allow commenting and inverting empty lines (useful when commenting a region)
let g:NERDCommentEmptyLines = 1

" Enable trimming of trailing whitespace when uncommenting
let g:NERDTrimTrailingWhitespace = 1

Default mappings

The following key mappings are provided by default (there is also a menu provided that contains menu items corresponding to all the below mappings):

Most of the following mappings are for normal/visual mode only. The |NERDComInsertComment| mapping is for insert mode only.

  • [count]<leader>cc |NERDComComment|

    Comment out the current line or text selected in visual mode.

  • [count]<leader>cn |NERDComNestedComment|

    Same as cc but forces nesting.

  • [count]<leader>c<space> |NERDComToggleComment|

    Toggles the comment state of the selected line(s). If the topmost selected line is commented, all selected lines are uncommented and vice versa.

  • [count]<leader>cm |NERDComMinimalComment|

    Comments the given lines using only one set of multipart delimiters.

  • [count]<leader>ci |NERDComInvertComment|

    Toggles the comment state of the selected line(s) individually.

  • [count]<leader>cs |NERDComSexyComment|

    Comments out the selected lines with a pretty block formatted layout.

  • [count]<leader>cy |NERDComYankComment|

    Same as cc except that the commented line(s) are yanked first.

  • <leader>c$ |NERDComEOLComment|

    Comments the current line from the cursor to the end of line.

  • <leader>cA |NERDComAppendComment|

    Adds comment delimiters to the end of line and goes into insert mode between them.

  • |NERDComInsertComment|

    Adds comment delimiters at the current cursor position and inserts between. Disabled by default.

  • <leader>ca |NERDComAltDelim|

    Switches to the alternative set of delimiters.

  • [count]<leader>cl
    [count]<leader>cb |NERDComAlignedComment|

    Same as |NERDComComment| except that the delimiters are aligned down the left side (<leader>cl) or both sides (<leader>cb).

  • [count]<leader>cu |NERDComUncommentLine|

    Uncomments the selected line(s).