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Created tips (markdown)
Junegunn Choi
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tips.md
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## Tips
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### Automatic installation
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Place the following code in your .vimrc before `plug#begin()` call
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```vim
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if empty(glob('~/.vim/autoload/plug.vim'))
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silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
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\ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
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autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
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endif
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```
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Note that `--sync` flag is used to block the execution until the installer finishes.
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(If you're behind an HTTP proxy, you may need to add `--insecure` option to the curl command. In that case, you also need to set `$GIT_SSL_NO_VERIFY` to true.)
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### Migrating from other plugin managers
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Download plug.vim in `autoload` directory
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```sh
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curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
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https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
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```
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and update your .vimrc as needed.
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<table>
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<tr>
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<th>
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With Vundle.vim
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</th>
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<th>
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Equivalent vim-plug configuration
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</th>
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</tr>
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<tr>
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<td>
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<pre>
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filetype off
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set rtp+=~/.vim/bundle/Vundle.vim
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call vundle#begin()
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Plugin 'VundleVim/Vundle.vim'
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Plugin 'junegunn/seoul256.vim'
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Plugin 'junegunn/goyo.vim'
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Plugin 'junegunn/limelight.vim'
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call vundle#end()
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filetype plugin indent on
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syntax enable
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</pre>
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</td>
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<td>
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<pre>
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call plug#begin('~/.vim/plugged')
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Plug 'junegunn/seoul256.vim'
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Plug 'junegunn/goyo.vim'
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Plug 'junegunn/limelight.vim'
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call plug#end()
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</pre>
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</td>
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</tr>
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</table>
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vim-plug does not require any extra statement other than `plug#begin()` and `plug#end()`.
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You can remove `filetype off`, `filetype plugin indent on` and `syntax on` from your
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`.vimrc` as they are automatically handled by `plug#begin()` and `plug#end()`.
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Since all the other major plugin managers store plugins in "bundle" directory,
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you might want to pass it to `plug#begin()` if you do not wish to reinstall plugins.
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```vim
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" For Mac/Linux users
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call plug#begin('~/.vim/bundle')
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" For Windows users
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call plug#begin('~/vimfiles/bundle')
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```
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Unlike Vundle, vim-plug does not implicitly prepend `vim-scripts/` to single-segment argument. So `Plugin 'taglist.vim'` in Vundle should be explicitly written as `Plug 'vim-scripts/taglist.vim'`. However, note that vim-scripts.org is no longer maintained.
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### Conditional activation
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Use plain "if" statement to conditionally activate plugins:
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```vim
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if has('mac')
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Plug 'junegunn/vim-xmark'
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endif
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```
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The caveat is that when the condition is not met, `PlugClean` will try to remove the plugin. This can be problematic if you share the same configuration across terminal Vim, GVim, and Neovim.
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```vim
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" When started with plain Vim, the plugin is not registered
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" and PlugClean will try to remove it
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if has('nvim')
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Plug 'benekastah/neomake'
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endif
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```
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Alternatively, you can pass an empty `on` or `for` option so that the plugin is registered but not loaded by default depending on the condition.
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```vim
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Plug 'benekastah/neomake', has('nvim') ? {} : { 'on': [] }
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```
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A helper function can improve the readability.
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```vim
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function! Cond(cond, ...)
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let opts = get(a:000, 0, {})
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return a:cond ? opts : extend(opts, { 'on': [], 'for': [] })
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endfunction
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" Looks better
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Plug 'benekastah/neomake', Cond(has('nvim'))
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" With other options
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Plug 'benekastah/neomake', Cond(has('nvim'), { 'on': 'Neomake' })
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```
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### Gist as plugin
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vim-plug does not natively support installing small Vim plugins from Gist.
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But there is a workaround if you really want it.
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```vim
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Plug 'https://gist.github.com/952560a43601cd9898f1.git',
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\ { 'as': 'xxx', 'do': 'mkdir -p plugin; cp -f *.vim plugin/' }
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```
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### Loading plugins manually
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With `on` and `for` options, vim-plug allows you to defer loading of plugins. But if you want a plugin to be loaded on an event that is not supported by vim-plug, you can set `on` or `for` option to an empty list, and use `plug#load(names...)` function later to load the plugin manually. The following example will load [ultisnips](https://github.com/SirVer/ultisnips) and [YouCompleteMe](https://github.com/Valloric/YouCompleteMe) first time you enter insert mode.
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```vim
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" Load on nothing
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Plug 'SirVer/ultisnips', { 'on': [] }
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Plug 'Valloric/YouCompleteMe', { 'on': [] }
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augroup load_us_ycm
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autocmd!
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autocmd InsertEnter * call plug#load('ultisnips', 'YouCompleteMe')
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\| autocmd! load_us_ycm
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augroup END
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```
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