Some vim setup for omnisharp and c#

vimrc

" remove any unwanted vi behavior as soon as possible
" must be first because actually has a great number of side effects
"
" is probably redundant, but I'm paranoid
set nocompatible

if !exists("g:source_base") 
    let g:source_base = "~bpm/.vim"
endif

if v:progname != "vi"
    exe "set rtp+=" . g:source_base
    exe "set rtp+=" . g:source_base . "/after"
    " exe "set rtp+=/usr/local/opt/fzf"

    exe "source " . g:source_base . "/vimrc_autocmds"
    exe "source " . g:source_base . "/vimrc_options"
    exe "source " . g:source_base . "/vimrc_functions"
    exe "source " . g:source_base . "/vimrc_mappings"
    exe "source " . g:source_base . "/vimrc_terminaloptions"
    exe "source " . g:source_base . "/vimrc_plugins"
    exe "source " . g:source_base . "/vimrc_omnisharp"
endif

if -1 != match(expand("%:p"), "/tmp/.*crontab.*")
    set compatible
endif

vimrc_omnisharp

let g:OmniSharp_server_stdio = 1

let g:OmniSharp_server_use_net6 = 1

let g:OmniSharp_start_without_solution = 1

" let g:OmniSharp_loglevel = 'debug'

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

" let g:ale_enabled = 0
" let g:ale_set_balloons = 0
" let g:ale_set_highlights = 0
" let g:ale_set_loclist = 0
" let g:ale_set_signs = 0
" let g:ale_set_highlights = 0
let g:ale_virtualtext_cursor = 'disabled'

let g:asyncomplete_auto_popup = 1
let g:asyncomplete_auto_completeopt = 0

let g:syntastic_cs_checkers = ['syntax']

" let g:OmniSharp_popup_position = 'peek'
let g:OmniSharp_popup_position = 'atcursor'
if has('nvim')
  let g:OmniSharp_popup_options = {
  \ 'winhl': 'Normal:NormalFloat'
  \}
else
  let g:OmniSharp_popup_options = {
  \ 'highlight': 'Normal',
  \ 'padding': [0, 0, 0, 0],
  \ 'border': [1]
  \}
endif
let g:OmniSharp_popup_mappings = {
\ 'sigNext': '<C-n>',
\ 'sigPrev': '<C-p>',
\ 'pageDown': ['<C-f>', '<PageDown>'],
\ 'pageUp': ['<C-b>', '<PageUp>']
\}

let g:sharpenup_map_prefix = '<Space>os'

let g:sharpenup_statusline_opts = { 'Text': '%s (%p/%P)' }
let g:sharpenup_statusline_opts.Highlight = 1

let g:OmniSharp_selector_ui = 'fzf'
let g:OmniSharp_selector_findusages = 'fzf'

function! MakeSolution() abort
  let sln = shellescape(fnamemodify(OmniSharp#FindSolutionOrDir(), ':.'))
  call feedkeys(':make' . sln)
endfunction

" " automatically open quickfix window after build is completed
" autocmd QuickFixCmdPost [^l]* nested cwindow
" autocmd QuickFixCmdPost    l* nested lwindow

augroup omnisharp_commands
    autocmd!

    " "Set autocomplete function to OmniSharp (if not using YouCompleteMe completion plugin)
    " autocmd FileType cs setlocal omnifunc=OmniSharp#Complete

    " Synchronous build (blocks Vim)
    "autocmd FileType cs nnoremap <F5> :wa!<cr>:OmniSharpBuild<cr>
    " Builds can also run asynchronously with vim-dispatch installed
    " autocmd FileType cs nnoremap <leader>b :wa!<cr>:OmniSharpBuildAsync<cr>
    " automatic syntax check on events (TextChanged requires Vim 7.4)
"     if v:version >= 704
"         autocmd BufEnter,TextChanged,InsertLeave *.cs SyntasticCheck
"     endif

    " " Automatically add new cs files to the nearest project on save
    " autocmd BufWritePost *.cs call OmniSharp#AddToProject()

    "show type information automatically when the cursor stops moving
    " autocmd CursorHold *.cs call OmniSharp#TypeLookupWithoutDocumentation()

    "The following commands are contextual, based on the current cursor position.

    " autocmd FileType cs nnoremap <leader>fk :call MakeSolution()<CR>
    autocmd FileType cs nnoremap <leader>fd :OmniSharpGotoDefinition<cr>
    autocmd FileType cs nnoremap <leader>fi :OmniSharpFindImplementations<cr>
    autocmd FileType cs nnoremap <leader>ft :OmniSharpFindType<cr>
    autocmd FileType cs nnoremap <leader>fs :OmniSharpFindSymbol<cr>
    autocmd FileType cs nnoremap <leader>fu :OmniSharpFindUsages<cr>
    "finds members in the current buffer
    autocmd FileType cs nnoremap <leader>fm :OmniSharpFindMembers<cr>
    " " cursor can be anywhere on the line containing an issue
    " autocmd FileType cs nnoremap <leader>x  :OmniSharpFixIssue<cr>
    " autocmd FileType cs nnoremap <leader>fx :OmniSharpFixUsings<cr>
    autocmd FileType cs nnoremap <leader>tt :OmniSharpTypeLookup<cr>
    " autocmd FileType cs nnoremap <leader>dc :OmniSharpDocumentation<cr>

    " "navigate up by method/property/field
    " autocmd FileType cs nnoremap <C-K> :OmniSharpNavigateUp<cr>
    " "navigate down by method/property/field
    " autocmd FileType cs nnoremap <C-J> :OmniSharpNavigateDown<cr>

augroup END

vimrc_options

set hidden
set history=4096
set mousehide
set path+=~/.vim
set scrolloff=5
set sidescroll=2
set statusline=%F\ %y\ %r%m\ %=%l/%L\ %{virtcol(\".\")}\ (%p%%)
set viminfo=!,\"1000,%,'50,h,n~/.vim/viminfo

" will save file when jumping to a tag in another file (and other times)
set autowrite

" gets rid of about 80% of the 'hit-return' prompts
set cmdheight=2

" don't change alternate files for :reads
set cpoptions-=a

" don't break long lines if they're already long when you start
" format numbered lists
set formatoptions+=ln

" remove the toolbar
set guioptions-=T

" add bottom scrollbar
set guioptions+=b

" always show a status line
set laststatus=2

" give hints, so we know if in insert, replace, visual, select, or normal mode
set showmode

" when highlighting stuff I can go anywhere
set virtualedit=block

" i hate the PC speaker
set visualbell

" control how wildcard matching behaves
set wildmenu
set wildmode=longest:full

" set mouse and selection to how I like it
behave xterm

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

" use dictionary for 'i_ctrl-[pn]'
set complete+=k
set dictionary+=/usr/share/dict/words
set infercase

"
" Defaults for editing and displaying text.
"

" basic formatting
set autoindent

" bs behaves like in most editors
set backspace=indent,eol,start

" advanced formatting will be in ftplugins
set nocindent

" helpful for textfiles - actually not really
" set textwidth=78

" not useful for regular text.  will be turned on by ftplugins
set noshowmatch

" more easily identify strange lines
set nowrap
set listchars=eol:$,tab:\|\ ,trail:¿

" tabs are evil
set expandtab
set shiftwidth=4
set tabstop=4
set softtabstop=4

"
" Setup Searching
"

" default is visual feedback and to disregard case, unless there is a *typed*
" uppercase char in the text to search for
set ignorecase
set incsearch
set smartcase

exe "set backupdir=" . g:source_base . "/tmp//"
exe "set directory=" . g:source_base . "/tmp//"
exe "set undodir=" . g:source_base . "/tmp//"

set backup
set undofile

set nofoldenable