Vim: nvim compatibility; replaced OmniCpp with vim-lsp

vim/vimrc.local

@@ -1,12 +1,15 @@
-set ts=2
-set sw=2
+set ts=4
+set sw=4
 set showcmd
 set nofsync
-set swapsync=
 set incsearch
 set hlsearch
 set cursorline
 
+if !has('nvim')
+	set swapsync=
+endif
+
 " Set up visible whitespace by default
 set list
 set listchars=tab:»-,trail:~,extends:>,precedes:<

vim/vimrc.user

@@ -1,33 +1,45 @@
 " configure tags - add additional tags here or comment out not-used ones
 set tags+=~/.vim/tags/cpp
-set tags+=~/.vim/tags/gl
-set tags+=~/.vim/tags/sdl
-set tags+=~/.vim/tags/qt4
-set tags+=~/.vim/tags/irrlicht
 " build tags of your own project with F11
 map <F11> :!ctags -R --sort=yes --c++-kinds=+p --fields=+iaS --extra=+q .<CR>
 map <F10> :mksession! Session.vim \| wviminfo! viminfo<CR>
 
-" OmniCppComplete
-let OmniCpp_NamespaceSearch = 1
-let OmniCpp_GlobalScopeSearch = 1
-let OmniCpp_ShowAccess = 1
-let OmniCpp_ShowPrototypeInAbbr = 1 " show function parameters
-let OmniCpp_MayCompleteDot = 1 " autocomplete after .
-let OmniCpp_MayCompleteArrow = 1 " autocomplete after ->
-let OmniCpp_MayCompleteScope = 1 " autocomplete after ::
-let OmniCpp_DefaultNamespaces = ["std", "_GLIBCXX_STD"]
-" automatically open and close the popup menu / preview window
-au CursorMovedI,InsertLeave * if pumvisible() == 0|silent! pclose|endif
-set completeopt=menuone,menu,longest,preview
-
-" for latex-suite
-filetype plugin on
-set grepprg=grep\ -nH\ $*
-let g:tex_flavor='latex'
-let g:Tex_ViewRule_dvi = 'okular'
-let g:Tex_ViewRule_pdf = 'okular'
-
 set modeline
-set expandtab
+set noexpandtab
 set listchars+=precedes:<,extends:>
+
+" Language Server
+
+let g:lsp_signs_enabled = 1         " enable signs
+let g:lsp_diagnostics_echo_cursor = 1 " enable echo under cursor when in normal mode
+
+"if executable('pyls')
+"    " pip install python-language-server
+"    au User lsp_setup call lsp#register_server({
+"        \ 'name': 'pyls',
+"        \ 'cmd': {server_info->['pyls']},
+"        \ 'whitelist': ['python'],
+"        \ })
+"endif
+
+if executable('ghdl-ls')
+    au User lsp_setup call lsp#register_server({
+        \ 'name': 'ghdl-ls',
+        \ 'cmd': {server_info->['ghdl-ls']},
+        \ 'whitelist': ['vhdl'],
+        \ })
+endif
+
+function! s:on_lsp_buffer_enabled() abort
+    setlocal omnifunc=lsp#complete
+    setlocal signcolumn=yes
+    nmap <buffer> gd <plug>(lsp-definition)
+    nmap <buffer> <f2> <plug>(lsp-rename)
+    " refer to doc to add more commands
+endfunction
+
+augroup lsp_install
+    au!
+    " call s:on_lsp_buffer_enabled only for languages that has the server registered.
+    autocmd User lsp_buffer_enabled call s:on_lsp_buffer_enabled()
+augroup END