Example config

This is a full example .vimrc with multiple support plugins, with a look similar to the demo gif in the README.

" Set this to 1 to use ultisnips for snippet handling
let s:using_snippets = 0

" vim-plug: {{{
call plug#begin('~/.vim/plugged')

Plug 'OmniSharp/omnisharp-vim'

" Mappings, code-actions available flag and statusline integration
Plug 'nickspoons/vim-sharpenup'

" Linting/error highlighting
Plug 'dense-analysis/ale'

" Vim FZF integration, used as OmniSharp selector
Plug 'junegunn/fzf'
Plug 'junegunn/fzf.vim'

" Autocompletion
Plug 'prabirshrestha/asyncomplete.vim'

" Colorscheme
Plug 'gruvbox-community/gruvbox'

" Statusline
Plug 'itchyny/lightline.vim'
Plug 'shinchu/lightline-gruvbox.vim'
Plug 'maximbaz/lightline-ale'

" Snippet support
if s:using_snippets
  Plug 'sirver/ultisnips'
endif

call plug#end()
" }}}

" Settings: {{{
filetype indent plugin on
if !exists('g:syntax_on') | syntax enable | endif
set encoding=utf-8
scriptencoding utf-8


set completeopt=menuone,noinsert,noselect,popuphidden
set completepopup=highlight:Pmenu,border:off

set backspace=indent,eol,start
set expandtab
set shiftround
set shiftwidth=4
set softtabstop=-1
set tabstop=8
set textwidth=80
set title

set hidden
set nofixendofline
set nostartofline
set splitbelow
set splitright

set hlsearch
set incsearch
set laststatus=2
set nonumber
set noruler
set noshowmode
set signcolumn=yes

set mouse=a
set updatetime=1000
" }}}

" Colors: {{{
augroup ColorschemePreferences
  autocmd!
  " These preferences clear some gruvbox background colours, allowing transparency
  autocmd ColorScheme * highlight Normal     ctermbg=NONE guibg=NONE
  autocmd ColorScheme * highlight SignColumn ctermbg=NONE guibg=NONE
  autocmd ColorScheme * highlight Todo       ctermbg=NONE guibg=NONE
  " Link ALE sign highlights to similar equivalents without background colours
  autocmd ColorScheme * highlight link ALEErrorSign   WarningMsg
  autocmd ColorScheme * highlight link ALEWarningSign ModeMsg
  autocmd ColorScheme * highlight link ALEInfoSign    Identifier
augroup END

" Use truecolor in the terminal, when it is supported
if has('termguicolors')
  set termguicolors
endif

set background=dark
colorscheme gruvbox
" }}}

" ALE: {{{
let g:ale_sign_error = '•'
let g:ale_sign_warning = '•'
let g:ale_sign_info = '·'
let g:ale_sign_style_error = '·'
let g:ale_sign_style_warning = '·'

let g:ale_linters = { 'cs': ['OmniSharp'] }
" }}}

" Asyncomplete: {{{
let g:asyncomplete_auto_popup = 1
let g:asyncomplete_auto_completeopt = 0
" }}}

" Sharpenup: {{{
" All sharpenup mappings will begin with `<Space>os`, e.g. `<Space>osgd` for
" :OmniSharpGotoDefinition
let g:sharpenup_map_prefix = '<Space>os'

let g:sharpenup_statusline_opts = { 'Text': '%s (%p/%P)' }
let g:sharpenup_statusline_opts.Highlight = 0

augroup OmniSharpIntegrations
  autocmd!
  autocmd User OmniSharpProjectUpdated,OmniSharpReady call lightline#update()
augroup END
" }}}

" Lightline: {{{
let g:lightline = {
\ 'colorscheme': 'gruvbox',
\ 'active': {
\   'right': [
\     ['linter_checking', 'linter_errors', 'linter_warnings', 'linter_infos', 'linter_ok'],
\     ['lineinfo'], ['percent'],
\     ['fileformat', 'fileencoding', 'filetype', 'sharpenup']
\   ]
\ },
\ 'inactive': {
\   'right': [['lineinfo'], ['percent'], ['sharpenup']]
\ },
\ 'component': {
\   'sharpenup': sharpenup#statusline#Build()
\ },
\ 'component_expand': {
\   'linter_checking': 'lightline#ale#checking',
\   'linter_infos': 'lightline#ale#infos',
\   'linter_warnings': 'lightline#ale#warnings',
\   'linter_errors': 'lightline#ale#errors',
\   'linter_ok': 'lightline#ale#ok'
  \  },
  \ 'component_type': {
  \   'linter_checking': 'right',
  \   'linter_infos': 'right',
  \   'linter_warnings': 'warning',
  \   'linter_errors': 'error',
  \   'linter_ok': 'right'
\  }
\}
" Use unicode chars for ale indicators in the statusline
let g:lightline#ale#indicator_checking = "\uf110 "
let g:lightline#ale#indicator_infos = "\uf129 "
let g:lightline#ale#indicator_warnings = "\uf071 "
let g:lightline#ale#indicator_errors = "\uf05e "
let g:lightline#ale#indicator_ok = "\uf00c "
" }}}

" OmniSharp: {{{
let g:OmniSharp_popup_position = 'peek'
if has('nvim')
  let g:OmniSharp_popup_options = {
  \ 'winblend': 30,
  \ 'winhl': 'Normal:Normal,FloatBorder:ModeMsg',
  \ 'border': 'rounded'
  \}
else
  let g:OmniSharp_popup_options = {
  \ 'highlight': 'Normal',
  \ 'padding': [0],
  \ 'border': [1],
  \ 'borderchars': ['─', '│', '─', '│', '╭', '╮', '╯', '╰'],
  \ 'borderhighlight': ['ModeMsg']
  \}
endif
let g:OmniSharp_popup_mappings = {
\ 'sigNext': '<C-n>',
\ 'sigPrev': '<C-p>',
\ 'pageDown': ['<C-f>', '<PageDown>'],
\ 'pageUp': ['<C-b>', '<PageUp>']
\}

if s:using_snippets
  let g:OmniSharp_want_snippet = 1
endif

let g:OmniSharp_highlight_groups = {
\ 'ExcludedCode': 'NonText'
\}
" }}}