136 lines
4.9 KiB
Markdown
136 lines
4.9 KiB
Markdown
The NERD Tree
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=============
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Intro
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-----
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The NERD tree allows you to explore your filesystem and to open files and
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directories. It presents the filesystem to you in the form of a tree which you
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manipulate with the keyboard and/or mouse. It also allows you to perform
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simple filesystem operations.
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The following features and functionality are provided by the NERD tree:
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* Files and directories are displayed in a hierarchical tree structure
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* Different highlighting is provided for the following types of nodes:
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* files
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* directories
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* sym-links
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* windows .lnk files
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* read-only files
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* executable files
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* Many (customisable) mappings are provided to manipulate the tree:
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* Mappings to open/close/explore directory nodes
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* Mappings to open files in new/existing windows/tabs
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* Mappings to change the current root of the tree
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* Mappings to navigate around the tree
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* ...
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* Directories and files can be bookmarked.
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* Most NERD tree navigation can also be done with the mouse
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* Filtering of tree content (can be toggled at runtime)
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* custom file filters to prevent e.g. vim backup files being displayed
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* optional displaying of hidden files (. files)
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* files can be "turned off" so that only directories are displayed
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* The position and size of the NERD tree window can be customised
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* The order in which the nodes in the tree are listed can be customised.
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* A model of your filesystem is created/maintained as you explore it. This
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has several advantages:
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* All filesystem information is cached and is only re-read on demand
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* If you revisit a part of the tree that you left earlier in your
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session, the directory nodes will be opened/closed as you left them
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* The script remembers the cursor position and window position in the NERD
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tree so you can toggle it off (or just close the tree window) and then
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reopen it (with NERDTreeToggle) the NERD tree window will appear exactly
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as you left it
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* You can have a separate NERD tree for each tab, share trees across tabs,
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or a mix of both.
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* By default the script overrides the default file browser (netrw), so if
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you :edit a directory a (slightly modified) NERD tree will appear in the
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current window
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* A programmable menu system is provided (simulates right clicking on a node)
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* one default menu plugin is provided to perform basic filesystem
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operations (create/delete/move/copy files/directories)
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* There's an API for adding your own keymappings
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Installation
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------------
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#### [pathogen.vim](https://github.com/tpope/vim-pathogen)
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git clone https://github.com/scrooloose/nerdtree.git ~/.vim/bundle/nerdtree
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Then reload vim, run `:helptags ~/.vim/bundle/nerdtree/doc/`, and check out `:help NERD_tree.txt`.
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#### [apt-vim](https://github.com/egalpin/apt-vim)
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apt-vim install -y https://github.com/scrooloose/nerdtree.git
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Faq
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---
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> Is there any support for `git` flags?
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Yes, install [nerdtree-git-plugin](https://github.com/Xuyuanp/nerdtree-git-plugin).
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---
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> Can I have the nerdtree on every tab automatically?
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Nope. If this is something you want then chances are you aren't using tabs and
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buffers as they were intended to be used. Read this
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http://stackoverflow.com/questions/102384/using-vims-tabs-like-buffers
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If you are interested in this behaviour then consider [vim-nerdtree-tabs](https://github.com/jistr/vim-nerdtree-tabs)
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---
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> How can I open a NERDTree automatically when vim starts up?
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Stick this in your vimrc: `autocmd vimenter * NERDTree`
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---
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> How can I open a NERDTree automatically when vim starts up if no files were specified?
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Stick this in your vimrc:
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autocmd StdinReadPre * let s:std_in=1
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autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif
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Note: Now start vim with plain `vim`, not `vim .`
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---
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> How can I open NERDTree automatically when vim starts up on opening a directory?
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autocmd StdinReadPre * let s:std_in=1
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autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | endif
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This window is tab-specific, meaning it's used by all windows in the tab. This trick also prevents NERDTree from hiding when first selecting a file.
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---
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> How can I map a specific key or shortcut to open NERDTree?
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Stick this in your vimrc to open NERDTree with `Ctrl+n` (you can set whatever key you want):
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map <C-n> :NERDTreeToggle<CR>
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---
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> How can I close vim if the only window left open is a NERDTree?
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Stick this in your vimrc:
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autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
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---
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> Can I have different highlighting for different file extensions?
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See here: https://github.com/scrooloose/nerdtree/issues/433#issuecomment-92590696
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---
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> How can I change default arrows?
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Use these variables in your vimrc. Note that below are default arrow symbols
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let g:NERDTreeDirArrowExpandable = '▸'
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let g:NERDTreeDirArrowCollapsible = '▾'
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