From 357c0aab134398115adde68fc34b3b1dd9ff3f07 Mon Sep 17 00:00:00 2001
From: Zykino <Zykino@users.noreply.github.com>
Date: Mon, 27 May 2019 20:24:23 +0200
Subject: [PATCH] add neovim configuration

---
 init.vim | 137 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 init.vim

diff --git a/init.vim b/init.vim
new file mode 100644
index 0000000..3196c8f
--- /dev/null
+++ b/init.vim
@@ -0,0 +1,137 @@
+"" Based on ensimag vim config file version 1.0.2
+"" this file is intended for vim 8.
+"" before using it on your machine however you will need to:
+"" - install plug with :
+""      curl -fLo ~/.local/share/nvim/site/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+"" (see https://github.com/junegunn/vim-plug)
+"" - install the languageserver server for each language you indend to use :
+""    * pyls for python (see https://github.com/palantir/python-language-server)
+""    * rls for rust (see https://github.com/rust-lang-nursery/rls)
+""    * clangd for c
+"" - you need to install jedi for python auto-completion
+"" - install some font with powerline symbols for eye candy and icons
+"" (see https://github.com/powerline/fonts)
+"" - change plugin directory to ~/.local/share/nvim/plugged
+
+"" after that copy this file as your ~/.vimrc and execute :PlugInstall
+
+set nocompatible
+filetype off
+
+call plug#begin('~/.local/share/nvim/plugged') " on your own machine
+
+" not needed as neovim alreay has (better ?) sane defaults
+"Plug 'tpope/vim-sensible' " sane defaults
+
+" eye candy
+Plug 'vim-airline/vim-airline' " status bar (needs special fonts)
+Plug 'vim-airline/vim-airline-themes'
+Plug 'morhetz/gruvbox' " very nice and soft color theme
+Plug 'ryanoasis/vim-devicons' " various symbols (linux, rust, python, ...)
+
+" essential plugins
+" see for example https://github.com/autozimu/LanguageClient-neovim/issues/35#issuecomment-288731665
+"Plug 'maralla/completor.vim' " auto-complete
+Plug 'autozimu/LanguageClient-neovim', {
+    \ 'branch': 'next',
+    \ 'do': 'bash install.sh',
+    \ } " as of july 2018 this branch is needed for vim8
+Plug 'tbodt/deoplete-tabnine', {
+	\ 'do': './install.sh',
+	\ } " auto-complete contextually
+
+" rust
+Plug 'rust-lang/rust.vim' " syntax highlighting
+Plug 'mattn/webapi-vim' " used for rust playpen
+
+
+" not essential
+Plug 'tpope/vim-fugitive' " git
+Plug 'scrooloose/nerdtree' " browse files tree
+" Plug 'junegunn/fzf' " fuzzy files finding
+
+" snippets allow to easily 'fill' common patterns
+Plug 'SirVer/ultisnips'
+Plug 'honza/vim-snippets'
+
+call plug#end()
+
+filetype plugin indent on
+
+" configure maralla/completor to use tab
+" other configurations are possible (see website)
+"inoremap <expr> <Tab> pumvisible() ? "\<C-n>" : "\<Tab>"
+"inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"
+"inoremap <expr> <cr> pumvisible() ? "\<C-y>\<cr>" : "\<cr>"
+
+" ultisnips default bindings compete with completor's tab
+" so we need to remap them
+let g:UltiSnipsExpandTrigger="<c-t>"
+let g:UltiSnipsJumpForwardTrigger="<c-b>"
+let g:UltiSnipsJumpBackwardTrigger="<c-z>"
+
+" airline :
+" for terminology you will need either to export TERM='xterm-256color'
+" or run it with '-2' option
+let g:airline_powerline_fonts = 1
+set laststatus=2
+au VimEnter * exec 'AirlineTheme hybrid'
+
+set encoding=utf-8
+
+syntax on
+
+colorscheme gruvbox
+set background=dark
+set number relativenumber
+
+" see https://jeffkreeftmeijer.com/vim-number/
+:augroup numbertoggle
+:  autocmd!
+:  autocmd BufEnter,FocusGained,InsertLeave,WinEnter * if &nu | set rnu   | endif
+:  autocmd BufLeave,FocusLost,InsertEnter,WinLeave   * if &nu | set nornu | endif
+:augroup END
+
+
+let NERDTreeIgnore=['\.pyc$', '\~$'] "ignore files in NERDTree
+
+" tabs
+set tabstop=4
+set shiftwidth=4
+set smartindent
+
+" highlight trailing whitespace
+highlight ExtraWhitespace ctermbg=red guibg=red
+match ExtraWhitespace /\s\+\%#\@<!$/
+
+" some more rust
+let g:LanguageClient_loadSettings = 1 " this enables you to have per-projects languageserver settings in .vim/settings.json
+let g:rustfmt_autosave = 1
+let g:rust_conceal = 1
+set hidden
+
+" I don't really like to use this but if you prefer this kind of symbol you
+" can uncomment this.
+"au BufEnter,BufNewFile,BufRead *.rs syntax match rustEquality "==\ze[^>]" conceal cchar=≟	" Char "question equal to" from unicode:	[c-v]U225F
+"au BufEnter,BufNewFile,BufRead *.rs syntax match rustInequality "!=\ze[^>]" conceal cchar=≠	" Char "not equal to" from unicode:			[c-v]U2260
+
+" let's autoindent c files
+au BufWrite *.c call LanguageClient#textDocument_formatting()
+
+" run language server for python, rust and c
+let g:LanguageClient_autoStart = 1
+let g:LanguageClient_serverCommands = {
+    \ 'python': ['pyls'],
+    \ 'rust': ['rustup', 'run', 'stable', 'rls'],
+    \ 'javascript': ['javascript-typescript-stdio'],
+    \ 'go': ['go-langserver'],
+    \ 'c' : ['clangd']
+	\ }
+
+" keep the cursor "centered" vertically
+set scrolloff=5
+
+" use rg instead of grep. Comment this if you ripgrep is not installed.
+set grepprg=rg\ --vimgrep
+set grepformat=%f:%l:%c:%m
+