neovim config as of Aug 19, 2022

init.vim

set completeopt=menuone,noinsert,noselect
set shortmess+=c
"" lightline
let g:lightline = {
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ], [ 'readonly', 'filename', 'modified' ] ],
      \   'right': [
      \     [ 'lineinfo' ],
	    \     [ 'percent' ],
	    \     [ 'fileencoding', 'filetype']
      \   ],
      \ },
      \ 'tabline': {
      \   'left': [ ['buffers'] ],
      \   'right': [ ['close'] ]
      \ },
      \ 'component_expand': {
      \   'buffers': 'lightline#bufferline#buffers',
      \ },
      \ 'component_type': {
      \   'buffers': 'tabsel',
      \     'linter_checking': 'right',
      \     'linter_infos': 'right',
      \     'linter_warnings': 'warning',
      \     'linter_errors': 'error',
      \     'linter_ok': 'right',
      \ }
      \ }

call plug#begin(expand('~/.config/nvim/plugged'))

" ================= looks and GUI stuff ================== "{{{

Plug 'luochen1990/rainbow'                              " rainbow parenthesis
Plug 'hzchirs/vim-material'                             " material color themes
Plug 'gregsexton/MatchTag'                              " highlight matching html tags
Plug 'Jorengarenar/vim-MvVis'                           " move visual selection

" ================= Functionalities ================= "{{{

Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }     " fzf itself
Plug 'junegunn/fzf.vim'                                 " fuzzy search integration
Plug 'honza/vim-snippets'                               " actual snippets
Plug 'Yggdroot/indentLine'                              " show indentation lines
Plug 'numirias/semshi', {'do': ':UpdateRemotePlugins'}  " better python
Plug 'tpope/vim-commentary'                             " better commenting
Plug 'tpope/vim-fugitive'                               " git support
Plug 'psliwka/vim-smoothie'                             " some very smooth ass scrolling
Plug 'tpope/vim-eunuch'                                 " run common Unix commands inside Vim
Plug 'machakann/vim-sandwich'                           " make sandwiches

Plug 'itchyny/lightline.vim'
Plug 'cespare/vim-toml'
Plug 'rust-lang/rust.vim'
Plug 'mengelbrecht/lightline-bufferline'
Plug 'sheerun/vim-polyglot'
Plug 'tpope/vim-obsession'
Plug 'tpope/vim-unimpaired'
Plug 'nvim-lua/plenary.nvim'
Plug 'windwp/nvim-spectre'
Plug 'neovim/nvim-lspconfig'
Plug 'williamboman/nvim-lsp-installer'
Plug 'hrsh7th/nvim-cmp'
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'hrsh7th/cmp-vsnip'
Plug 'hrsh7th/cmp-path'
Plug 'hrsh7th/cmp-buffer'
Plug 'simrat39/rust-tools.nvim'
Plug 'akinsho/flutter-tools.nvim'
Plug 'nvim-lua/popup.nvim'
Plug 'nvim-telescope/telescope.nvim'
Plug 'mfussenegger/nvim-dap'
Plug 'rcarriga/nvim-dap-ui'
"Plug 'rlue/vim-barbaric'
Plug 'h-hg/fcitx.nvim'

call plug#end()

"}}}

" ==================== general config ======================== "{{{

set termguicolors                                       " Opaque Background
set mouse=a                                             " enable mouse scrolling
"set clipboard+=unnamedplus                              " use system clipboard by default
set tabstop=2 softtabstop=2 shiftwidth=2 autoindent     " tab width
set expandtab smarttab                                  " tab key actions
set incsearch ignorecase smartcase hlsearch             " highlight text while searching
set list listchars=trail:»,tab:»-                       " use tab to navigate in list mode
set fillchars+=vert:\▏                                  " requires a patched nerd font (try FiraCode)
set wrap breakindent                                    " wrap long lines to the width set by tw
set encoding=utf-8                                      " text encoding
set number                                              " enable numbers on the left
set relativenumber                                      " current line is 0
set title                                               " tab title as file name
set noshowmode                                          " dont show current mode below statusline
set noshowcmd                                           " to get rid of display of last command
set conceallevel=2                                      " set this so we wont break indentation plugin
set splitright                                          " open vertical split to the right
set splitbelow                                          " open horizontal split to the bottom
set tw=90                                               " auto wrap lines that are longer than that
set emoji                                               " enable emojis
set history=1000                                        " history limit
set backspace=indent,eol,start                          " sensible backspacing
set undofile                                            " enable persistent undo
set undodir=/tmp                                        " undo temp file directory
set foldlevel=0                                         " open all folds by default
set inccommand=nosplit                                  " visual feedback while substituting
set showtabline=0                                       " always show tabline
set laststatus=2
set grepprg=rg\ --vimgrep                               " use rg as default grepper

" performance tweaks
set cursorline
set nocursorcolumn
set scrolljump=5
set lazyredraw
set redrawtime=10000
set synmaxcol=180
set re=1
set showtabline=2

" required by coc
set hidden
set cmdheight=1
set updatetime=300
set shortmess+=c
set signcolumn=yes

" Themeing
let g:material_style = 'oceanic'
colorscheme vim-material
hi Pmenu guibg='#00010a' guifg=white                    " popup menu colors
hi Comment gui=italic cterm=italic                      " italic comments
hi Search guibg=#b16286 guifg=#ebdbb2 gui=NONE          " search string highlight color
hi NonText guifg=bg                                     " mask ~ on empty lines
hi clear CursorLineNr                                   " use the theme color for relative number
hi CursorLineNr gui=bold                                " make relative number bold
hi SpellBad guifg=NONE gui=bold,undercurl               " misspelled words

" colors for git (especially the gutter)
hi DiffAdd  guibg=#0f111a guifg=#43a047
hi DiffChange guibg=#0f111a guifg=#fdd835
hi DiffRemoved guibg=#0f111a guifg=#e53935

" ======================== Plugin Configurations ======================== "{{{

"" built in plugins
let loaded_netrw = 0
let loaded_netrwPlugin = 1
let g:omni_sql_no_default_maps = 1                      " disable sql omni completion
let g:loaded_python_provider = 0
let g:loaded_perl_provider = 0
let g:loaded_ruby_provider = 0
if glob('~/.python3') != ''
  let g:python3_host_prog = expand('~/.python3/bin/python')
else
  let g:python3_host_prog = systemlist('which python3')[0]
endif

" rust.vim
let g:rustfmt_autosave = 1

" indentLine
let g:indentLine_char_list = ['▏', '¦', '┆', '┊']
let g:indentLine_setColors = 0
let g:indentLine_setConceal = 0                         " actually fix the annoying markdown links conversion

" rainbow brackets
let g:rainbow_active = 1

" semshi settings
let g:semshi#error_sign	= v:false                       " let ms python lsp handle this

"" FZF
let g:fzf_action = {
  \ 'ctrl-t': 'tab split',
  \ 'ctrl-x': 'split',
  \ 'ctrl-v': 'vsplit' }

let g:fzf_layout = {'up':'~90%', 'window': { 'width': 0.9, 'height': 0.9,'yoffset':0.5,'xoffset': 0.5, 'border': 'sharp' } }
let g:fzf_tags_command = 'ctags -R'

let $FZF_DEFAULT_OPTS = '--layout=reverse --inline-info'
let $FZF_DEFAULT_COMMAND = "rg --files --hidden --glob '!.git/**' --glob '!build/**' --glob '!.dart_tool/**' --glob '!.idea' --glob '!node_modules'"

"}}}

" ======================== Commands ============================= "{{{

au BufEnter * set fo-=c fo-=r fo-=o                     " stop annoying auto commenting on new lines
au FileType help wincmd L                               " open help in vertical split
au BufWritePre * :%s/\s\+$//e                           " remove trailing whitespaces before saving

" enable spell only if file type is normal text
let spellable = ['markdown', 'gitcommit', 'txt', 'text', 'liquid', 'rst']
autocmd BufEnter * if index(spellable, &ft) < 0 | set nospell | else | set spell | endif



" fzf if passed argument is a folder
augroup folderarg
    " change working directory to passed directory
    autocmd VimEnter * if argc() != 0 && isdirectory(argv()[0]) | execute 'cd' fnameescape(argv()[0])  | endif


    " start fzf on passed directory
    autocmd VimEnter * if argc() != 0 && isdirectory(argv()[0]) | execute 'Files ' fnameescape(argv()[0]) | endif
augroup END

" Return to last edit position when opening files
autocmd BufReadPost *
     \ if line("'\"") > 0 && line("'\"") <= line("$") |
     \   exe "normal! g`\"" |
     \ endif

" python renaming
autocmd FileType python nnoremap <leader>rn :Semshi rename <CR>

" files in fzf
command! -bang -nargs=? -complete=dir Files
    \ call fzf#vim#files(<q-args>, fzf#vim#with_preview({'options': ['--layout=reverse', '--inline-info']}), <bang>0)

" advanced grep
command! -nargs=* -bang Rg call RipgrepFzf(<q-args>, <bang>0)

"}}}

" ================== Custom Functions ===================== "{{{

" advanced grep(faster with preview)
function! RipgrepFzf(query, fullscreen)
    let command_fmt = 'rg --column --line-number --no-heading --color=always --smart-case %s || true'
    let initial_command = printf(command_fmt, shellescape(a:query))
    let reload_command = printf(command_fmt, '{q}')
    let spec = {'options': ['--phony', '--query', a:query, '--bind', 'change:reload:'.reload_command]}
    call fzf#vim#grep(initial_command, 1, fzf#vim#with_preview(spec), a:fullscreen)
endfunction

" check if last inserted char is a backspace (used by coc pmenu)
function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction


" ======================== Custom Mappings ====================== "{{{

"" the essentials
let mapleader=","
nnoremap ; :
nmap \ <leader>q
nmap <leader>q :bd<CR>
nmap <leader>w :w<CR>
"nmap <Tab> :bnext<CR>
"nmap <S-Tab> :bprevious<CR>
nnoremap <silent> <C-PageUp> :bprev<CR>
nnoremap <silent> <C-PageDown> :bnext<CR>
noremap <leader>e :PlugInstall<CR>
noremap <C-q> :q<CR>

" new line in normal mode and back
map <Enter> o<ESC>
map <S-Enter> O<ESC>

" use a different register for delete and paste
"nnoremap d "_d
"vnoremap d "_d
"vnoremap p "_dP
"nnoremap x "_x

" emulate windows copy, cut behavior
vnoremap <LeftRelease> "+y<LeftRelease>
vnoremap <C-c> "+y<CR>
vnoremap <C-x> "+d<CR>

" switch between splits using ctrl + {h,j,k,l}
inoremap <C-h> <C-\><C-N><C-w>h
inoremap <C-j> <C-\><C-N><C-w>j
inoremap <C-k> <C-\><C-N><C-w>k
inoremap <C-l> <C-\><C-N><C-w>l
nnoremap <C-h> <C-w>h
noremap <C-j> <C-w>j
nnoremap <C-k> <C-w>k
nnoremap <C-l> <C-w>l

" disable hl with 2 esc
noremap <silent><esc> <esc>:noh<CR><esc>

" trim white spaces
nnoremap <F2> :let _s=@/<Bar>:%s/\s\+$//e<Bar>:let @/=_s<Bar><CR>

"" FZF
nnoremap <C-p> :Files<CR>
nmap <leader>b :Buffers<CR>
nmap <leader>c :Commands<CR>
nmap <leader>t :BTags<CR>
nmap <C-f> :Rg<CR>
nmap <leader>gc :Commits<CR>
nmap <leader>gs :GFiles?<CR>
nmap <leader>sh :History/<CR>

" show mapping on all modes with F1
nmap <F1> <plug>(fzf-maps-n)
imap <F1> <plug>(fzf-maps-i)
vmap <F1> <plug>(fzf-maps-x)


" fugitive mappings
nmap <leader>gd :Gdiffsplit<CR>
nmap <leader>gb :Git blame<CR>

" nvim-spectre
nnoremap <leader>S :lua require('spectre').open()<CR>
"  search current word
nnoremap <leader>sw :lua require('spectre').open_visual({select_word=true})<CR>
vnoremap <leader>s :lua require('spectre').open_visual()<CR>
"  search in current file
nnoremap <leader>sp viw:lua require('spectre').open_file_search()<cr>

" Code navigation shortcuts
nnoremap <silent> <c-]> <cmd>lua vim.lsp.buf.definition()<CR>
nnoremap <silent> K     <cmd>lua vim.lsp.buf.hover()<CR>
nnoremap <silent> gi    <cmd>lua vim.lsp.buf.implementation()<CR>
nnoremap <silent> <c-k> <cmd>lua vim.lsp.buf.signature_help()<CR>
nnoremap <silent> 1gD   <cmd>lua vim.lsp.buf.type_definition()<CR>
nnoremap <silent> gr    <cmd>lua vim.lsp.buf.references()<CR>
nnoremap <silent> g0    <cmd>lua vim.lsp.buf.document_symbol()<CR>
nnoremap <silent> gW    <cmd>lua vim.lsp.buf.workspace_symbol()<CR>
nnoremap <silent> gd    <cmd>lua vim.lsp.buf.definition()<CR>
nnoremap <silent> ga    <cmd>lua vim.lsp.buf.code_action()<CR>
nnoremap <leader>r      <cmd>lua vim.lsp.buf.rename()<CR>
nnoremap <leader>f      <cmd>lua vim.lsp.buf.formatting()<CR>

" Debugging
nnoremap <leader>db     <cmd>lua require('dap').toggle_breakpoint()<CR>
nnoremap <leader>dc     <cmd>lua require('dap').continue()<CR>
nnoremap <leader>ds     <cmd>lua require('dap').step_into()<CR>
nnoremap <leader>da     <cmd>lua require('dap').run({

autocmd BufWritePre * lua vim.lsp.buf.formatting_sync(nil, 1000)

" 300ms of no cursor movement to trigger CursorHold
set updatetime=300
" Show diagnostic popup on cursor hold
autocmd CursorHold * lua vim.diagnostic.open_float()

" Goto previous/next diagnostic warning/error
nnoremap <silent> g[ <cmd>lua vim.diagnostic.goto_prev()<CR>
nnoremap <silent> g] <cmd>lua vim.diagnostic.goto_next()<CR>

" Configure LSP through rust-tools.nvim plugin.
" rust-tools will configure and enable certain LSP features for us.
" See https://github.com/simrat39/rust-tools.nvim#configuration
lua <<EOF
local nvim_lsp = require'lspconfig'

local opts = {
    tools = {
        autoSetHints = true,
        hover_with_actions = true,
        inlay_hints = {
            show_parameter_hints = true,
            parameter_hints_prefix = "",
            other_hints_prefix = "",
        },
    },

    -- all the opts to send to nvim-lspconfig
    -- these override the defaults set by rust-tools.nvim
    -- see https://github.com/neovim/nvim-lspconfig/blob/master/CONFIG.md#rust_analyzer
    server = {
        -- on_attach is a callback called when the language server attachs to the buffer
        -- on_attach = on_attach,
        settings = {
            -- to enable rust-analyzer settings visit:
            -- https://github.com/rust-analyzer/rust-analyzer/blob/master/docs/user/generated_config.adoc
            ["rust-analyzer"] = {
                checkOnSave = {
                    command = "clippy"
                },
            }
        }
    },
}

require('rust-tools').setup(opts)

require("flutter-tools").setup{}

local cmp = require'cmp'
cmp.setup({
  snippet = {
    -- expand = function(args)
    --     vim.fn["vsnip#anonymous"](args.body)
    -- end,
  },
  mapping = {
    ['<S-Tab>'] = cmp.mapping.select_prev_item(),
    ['<Tab>'] = cmp.mapping.select_next_item(),
    ['<C-d>'] = cmp.mapping.scroll_docs(-4),
    ['<C-f>'] = cmp.mapping.scroll_docs(4),
    ['<C-Space>'] = cmp.mapping.complete(),
    ['<C-e>'] = cmp.mapping.close(),
    ['<CR>'] = cmp.mapping.confirm({
      behavior = cmp.ConfirmBehavior.Insert,
      select = true,
    })
  },
  sources = {
    { name = 'nvim_lsp' },
    --{ name = 'vsnip' },
    --{ name = 'path' },
    --{ name = 'buffer' },
  },
})

local lspi = require 'nvim-lsp-installer'
lspi.on_server_ready(function(server)
      local opts = {}
      server:setup(opts)
end)

local dap = require 'dap'
dap.adapters.lldb = {
  type = 'executable',
  command = '/usr/bin/lldb-vscode', -- adjust as needed
  name = "lldb"
}

dap.configurations.rust = {
  {
    name = "Launch",
    type = "lldb",
    request = 'launch',
    program = '${workspaceFolder}/target/debug/${workspaceFolderBasename}',
    cwd = '${workspaceFolder}',
    stopOnEntry = false,
    args = {},

    runInTerminal = false,
  },
}

-- dap.configurations.c = dap.configurations.cpp

local dapui = require 'dapui'
dapui.setup({
  icons = { expanded = "▾", collapsed = "▸" },
  mappings = {
    expand = { "<CR>", "<2-LeftMouse>" },
    open = "o",
    remove = "d",
    edit = "e",
    repl = "r",
  },
  sidebar = {
    -- You can change the order of elements in the sidebar
    elements = {
      -- Provide as ID strings or tables with "id" and "size" keys
      {
        id = "scopes",
        size = 0.25, -- Can be float or integer > 1
      },
      { id = "breakpoints", size = 0.25 },
      { id = "stacks", size = 0.25 },
      { id = "watches", size = 00.25 },
    },
    size = 40,
    position = "left", -- Can be "left", "right", "top", "bottom"
  },
  tray = {
    elements = { "repl" },
    size = 10,
    position = "bottom", -- Can be "left", "right", "top", "bottom"
  },
  floating = {
    max_height = nil, -- These can be integers or a float between 0 and 1.
    max_width = nil, -- Floats will be treated as percentage of your screen.
    border = "single", -- Border style. Can be "single", "double" or "rounded"
    mappings = {
      close = { "q", "<Esc>" },
    },
  },
  windows = { indent = 1 },
})

dap.listeners.after.event_initialized["dapui_config"] = function()
  dapui.open()
end
dap.listeners.before.event_terminated["dapui_config"] = function()
  dapui.close()
end
dap.listeners.before.event_exited["dapui_config"] = function()
  dapui.close()
end

EOF