Merge: PR #11 from PrashanthaTP/v5.0.0

# Version 5.0.0

## Neovim

> See [nvim/README.md](https://github.com/PrashanthaTP/dotfiles/blob/v5.0.0/.config/nvim/README.md) for more useful links.

+ Rewrite config in `Lua`
+ Make use of Neovim LSP for better language support (completion suggestions,formatting,diagnostics,errors etc)
+ Use Neovim Treesitter for better highlighting and much more

## CommandLine Experience

+ [Ripgrep](https://github.com/BurntSushi/ripgrep) for searching files
+ [Bat](https://github.com/sharkdp/bat) for file preview
+ [Fzf](https://github.com/junegunn/fzf) for fuzzy finding

### Powershell

+ alias to Git bash Vim and other usr/bin/*.exe s

.config/nvim/.stylua.toml

@@ -0,0 +1,3 @@
+column_width = 120
+indent_type = "Spaces"
+indent_width = 2

.config/nvim/README.md

@@ -0,0 +1,38 @@
+# Neovim Config
+
+## Help
+
+### Lua
+
++ [nvim-lua-guide](https://github.com/nanotee/nvim-lua-guide)
++ [nvim :help lua](https://neovim.io/doc/user/lua.html)
+
+### Language Server Protocol [[Official Page]](https://microsoft.github.io/language-server-protocol/)
+
++ [LSP plugin](https://github.com/neovim/nvim-lspconfig) and [Servers configurations](https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md)
++ [nvim-cmp](https://github.com/hrsh7th/nvim-cmp), [nvim-cmp completion
+  mappings wiki](https://github.com/hrsh7th/nvim-cmp/wiki/Example-mappings)
+  [nvim-cmp menu appearance](https://github.com/hrsh7th/nvim-cmp/wiki/Menu-Appearance)
+
+### Autocommands
+
+- Use of `++nested` : [see vimhelp](https://vimhelp.org/autocmd.txt.html#autocmd-nested)
+
+## For formatting with LSP
+
+We can use [efm-langserver](https://github.com/mattn/efm-langserver) for code formatting.
+
++ [Example efm config : tomaskallup dotfiles](https://github.com/tomaskallup/dotfiles/blob/29177be3dc416842a3e9112520d4caa4b039728c/nvim/lua/plugins/nvim-lspconfig.lua#L138-L167) 
+
++ [Example efm config: martinsione dotfiles](https://github.com/martinsione/dotfiles/blob/3716969e12d663d9d7be432682f8fd5c022e44f1/src/.config/nvim/lua/modules/config/nvim-lspconfig/format.lua)
+
+## Nvim Treesitter [[treesitter]](https://github.com/tree-sitter/tree-sitter) [[nvim-treesitter]](https://github.com/nvim-treesitter/nvim-treesitter)
+
+Provides better syntax highlighting by wonderful parsing mechanism and if you are code-mad, amazing code control via `tree nodes`.
+
++ [nvim-treesitter instructions for Windows](https://github.com/nvim-treesitter/nvim-treesitter/wiki/Windows-support)
+
+## Lua Plugins
+
++ https://sbulav.github.io/vim/neovim-telescope-github/
+

.config/nvim/after/syntax/lua.vim

@@ -0,0 +1,16 @@
+unlet b:current_syntax
+
+syn include @Vim $VIMRUNTIME/syntax/vim.vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.api\.nvim_command(\[\[" end="\]\])" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.api\.nvim_command \[\[" end="\]\]" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.api\.nvim_exec(\[\[" end="\]\])" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.api\.nvim_exec \[\[" end="\]\]" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.cmd \[\[" end="\]\]" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.cmd(\[\[" end="\]\])" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.cmd \"" end="\"" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.cmd(\"" end="\")" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.cmd '" end="'" keepend contains=@Vim
+syn region embedvim matchgroup=luaEmbedError start="^vim\.cmd('" end="')" keepend contains=@Vim
+
+let b:current_syntax = 'lua'
+

.config/nvim/after/syntax/vim.vim

@@ -0,0 +1,7 @@
+unlet b:current_syntax
+
+syn include @Lua $VIMRUNTIME/syntax/lua.vim
+syn region embedlua matchgroup=vimEmbedError start="^lua << EOF$" end="^EOF$" keepend contains=@Lua
+
+let b:current_syntax = 'vim'
+

.config/nvim/init.lua

@@ -0,0 +1,27 @@
+-- +--------------------------------------------------------------------------+
+-- |                                                                          |
+-- |                            NEOVIM CONFIG                                 |
+-- |                                                                          |
+-- +--------------------------------------------------------------------------+
+--add init.lua's directory to runtime path
+--https://github.com/LunarVim/LunarVim/blob/109c766809760f7a9aba5dfb467d8299d2996de0/init.lua#L1-L6
+local init_path = debug.getinfo(1, "S").source:sub(2) -- ~.config/nvim/init.lua
+local base_dir = init_path:match("(.*[/\\])"):sub(1, -2) --~.config/nvim
+
+--add init.lua's directory to runtime path
+if not vim.tbl_contains(vim.opt.rtp:get(), base_dir) then
+	vim.opt.rtp:append(base_dir)
+end
+--------------------------------------------------------------------------------
+require("constants")
+--------------------------------------------------------------------------------
+--make sure vim-plug installed to manage plugins
+local utils = require("utils") -- should be called after adding curr dir to rtp
+utils.install_vim_plug()
+--------------------------------------------------------------------------------
+vim.cmd([[ let $TERM="xterm-256color" ]])
+
+require("general")
+require("autoload")
+require("plugins")
+

.config/nvim/lua/autoload/cursor.lua

@@ -0,0 +1,46 @@
+vim.cmd([[
+
+" cursor ----- {{{
+" Cursor in terminal
+" https//vim.fandom.com/wiki/Configuring_the_cursor
+" 1 or 0 -> blinking block
+" 2 solid block
+" 3 -> blinking underscore
+" 4 solid underscore
+" Recent versions of xterm (282 or above) also support
+" 5 -> blinking vertical bar
+" 6 -> solid vertical bar
+if &term =~ '^xterm'
+	" normal mode ||
+	" .= means shorthand for appending : see help .=
+	let &t_EI .= "\<Esc>[1 q"
+	" replace mode _
+	let &t_SR .= "\e[4 q"
+	" insert mode |
+	let &t_SI .= "\<Esc>[6 q"
+endif
+"
+" }}}
+
+augroup CURSOR_MANAGEMENT
+	autocmd!
+
+" powershell requires different format for escape codes
+" see :
+" (i) https://docs.microsoft.com/en-us/powershell/module/psreadline/set-psreadlineoption?view=powershell-5.1#example-6--use-vimodechangehandler-to-display-vi-mode-changes
+" (ii) https://github.com/microsoft/terminal/issues/1604
+if has('win32')
+	"https://github.com/neovim/neovim/issues/4867#issuecomment-291249173"
+	autocmd VimEnter * silent !echo  -ne "\e[2 q"
+	autocmd VimLeave * set guicursor=a:ver25
+
+else
+	autocmd VimEnter * silent !echo  -ne "\e[2 q"
+	autocmd VimLeave * silent !echo -ne  "\e[6 q"
+" autocmd VimLeave * let &t_me="\<Esc>]50;CursorShape=1\x7"
+" autocmd VimLeave * let &t_SI.="\<Esc>[6 q"
+endif
+augroup END
+
+]])
+

.config/nvim/lua/autoload/init.lua

@@ -0,0 +1 @@
+require('autoload.cursor')

.config/nvim/lua/constants.lua

@@ -0,0 +1,8 @@
+OS = "Windows"
+local NVIM_DIR = "D:/applications/nvim/nvim"
+PLUGINS_DIR = NVIM_DIR .. "/plugged"
+FORMATTERS_DIR = NVIM_DIR .. "/formatters"
+LUA_FORMATTER_EXE = FORMATTERS_DIR .. "/lua-format"
+LANGUAGE_SERVERS_DIR = NVIM_DIR .. "/language-servers"
+LUA_LANG_SERVER_EXE = LANGUAGE_SERVERS_DIR .. "/lua-language-server/bin/Windows/lua-language-server"
+LUA_LANG_SERVER_MAIN_LUA = LANGUAGE_SERVERS_DIR .. "/lua-language-server/main.lua"

.config/nvim/lua/general/init.lua

@@ -0,0 +1,4 @@
+require('general.settings')
+require('general.leader')
+require('general.keymappings')
+

.config/nvim/lua/general/keymappings.lua

@@ -0,0 +1,57 @@
+vim.cmd([[
+" MODES ----- {{{
+"use jk in insert mode to switch to normal mode
+inoremap jk <ESC>
+" }}}
+
+" yanking  ----- {{{
+"to match the behaviour of 'C' and 'D'
+nnoremap Y y$
+"replace with yanked word
+"https://vim.fandom.com/wiki/Replace_a_word_with_yanked_text
+nnoremap S "_diwP
+vnoremap S "_d"0P
+"highlight the yanked area for an extened period
+augroup highlight_yank
+    autocmd!
+    au TextYankPost * silent! lua vim.highlight.on_yank{higroup="IncSearch", timeout=300}
+augroup END
+" }}}
+
+" searching : the primeagen : top 5 keybindings ----- {{{
+"put the cursor at screen center while going to next search result
+nnoremap n nzz
+nnoremap N Nzz
+
+" }}}
+"
+" breakpoints ----- {{{
+"puts the next line at the end of current line : mz = create a mark called z , do J, `z = goto mark z
+nnoremap J mzJ`z
+"undo breakpoints
+inoremap . .<C-g>u
+inoremap , ,<C-g>u
+inoremap ! !<C-g>u
+inoremap ? ?<C-g>u
+" }}}
+"
+" moving lines with ALT key ----- {{{
+"https://vim.fandom.com/wiki/Moving_lines_up_or_down
+nnoremap <A-j> :m .+1<CR>==
+nnoremap <A-k> :m .-2<CR>==
+inoremap <A-j> <Esc>:m .+1<CR>==gi
+inoremap <A-k> <Esc>:m .-2<CR>==gi
+vnoremap <A-j> :m '>+1<CR>gv=gv
+vnoremap <A-k> :m '<-2<CR>gv=gv
+" }}}
+
+"htmlhttps://stackoverflow.com/questions/130734/how-can-one-close-html-tags-in-vim-quickly
+"inoremap ><Space> ><Esc>F<lyt>o</<C-r>"><Esc>O<Space>
+
+" better indentation ----- {{{
+vnoremap > >gv
+vnoremap < <gv
+" }}}
+
+]]
+)

.config/nvim/lua/general/leader.lua

@@ -0,0 +1,42 @@
+--https://sbulav.github.io/vim/neovim-telescope-github/
+function _G.save_and_exec()
+	vim.cmd([[silent! write]])
+	if vim.bo.filetype == "lua" then
+		require("plenary.reload").reload_module(vim.fn.expand("%"))
+		vim.cmd([[:luafile %]])
+	elseif vim.bo.filetype == "vim" then
+        vim.cmd([[:source %]])
+	else
+	end
+
+	print("Reloaded buffer : ",vim.fn.expand("%"))
+end
+
+vim.cmd([[
+
+let mapleader="\<Space>"
+
+" Mappings with leader key
+" source vim file
+nmap <leader>vs :source $MYVIMRC<CR>
+nmap <leader>vo :e $MYVIMRC<CR>
+" nmap <leader>so :vsplit <bar> :e $LOCALAPPDATA/nvim/init.vim<CR>
+nnoremap <leader>n :bnext<CR>
+nnoremap <leader>p :bprev<CR>
+nnoremap <leader>b :buffers<CR>
+nnoremap <leader>r :call v:lua.save_and_exec()<CR>
+" splits ----- {{{
+"nnoremap <leader>w <C-W>w "removed to support vimwiki
+nnoremap <leader>h <C-W>h
+nnoremap <leader>l <C-W>l
+nnoremap <leader>j <C-W>j
+nnoremap <leader>k <C-W>k
+"
+nnoremap <silent> <Leader>r= <C-w>=<CR>
+nnoremap <silent> <Leader>= :exe "resize " . (winheight(0) * 3/2)<CR>
+nnoremap <silent> <Leader>- :exe "resize " . (winheight(0) * 2/3)<CR>
+nnoremap <silent> <Leader>0 :exe "vertical resize " . (winwidth(0) * 3/2)<CR>
+nnoremap <silent> <Leader>9 :exe "vertical resize " . (winwidth(0) * 2/3)<CR>
+" }}}
+
+]])

.config/nvim/lua/general/settings.lua

@@ -0,0 +1,126 @@
+vim.cmd( [[
+
+"General Settings
+set mouse=a
+" CLIPBOARD ----- {{{
+"vim clipboard and system clipboard same now
+set clipboard^=unnamed
+"wrap backspace
+set backspace=indent,eol,start
+"https://stackoverflow.com/a/53872985/12988588
+"dont save character deleted using `x`
+"send it to The blackhole-register
+nnoremap x "_x
+"set autochdir
+" }}}
+
+" EDITOR ----- {{{
+set termguicolors
+syntax on
+set conceallevel=0
+
+let g:vimsyn_embed = 'l' " syntax heightlighting for embedded lua
+" filetype on
+" filetype plugin on
+" filetype indent on
+set ignorecase
+set smartcase
+" use 4 spaces for tabs
+set tabstop=4
+set autoindent
+set smarttab
+set expandtab
+set tabstop=4
+set softtabstop=4
+set shiftwidth=4
+set number
+set scrolloff=8
+set showtabline=2
+set lazyredraw
+set cursorline
+set colorcolumn=80
+set signcolumn=yes
+" Show white spaces https://gist.github.com/jdavid82/d40f40e6f124aad6223eba0ff0c7ad65#file-vimrc-L37-L39
+"set listchars=tab:>·,trail:~,extends:>,precedes:<,space:·
+"set list
+" }}}
+
+" SEARCHING ----- {{{
+set incsearch "on by default"
+set nohlsearch
+" clear last used search pattern:http://vimdoc.sourceforge.net/htmldoc/pattern.html#last-pattern
+"
+let @/=""
+" }}}
+
+" FOLDING ----- {{{
+" use pattern {{{ #code# }}} to detect fold region
+" use zm to fold all markers and zr to release all folds with markers
+set foldmethod=marker
+" }}}
+
+" BUFFERS ----- {{{
+" remember foldings is nvim/general/augroups.vim
+" }}}
+
+" SPLITS ----- {{{
+set splitbelow
+set splitright
+nnoremap <C-J> <C-W><C-J>
+nnoremap <C-K> <C-W><C-K>
+nnoremap <C-L> <C-W><C-L>
+nnoremap <C-H> <C-W><C-H>
+
+"}}}
+
+" Nice menu  like when typing `:find *.py` ---{{{
+set wildmode=longest,list,full
+set wildmenu
+" Ignore files
+set wildignore+=*.pyc
+set wildignore+=*_build/*
+set wildignore+=**/coverage/*
+set wildignore+=**/node_modules/*
+set wildignore+=**/android/*
+set wildignore+=**/ios/*
+set wildignore+=**/.git/*
+" }}}
+
+" misc----- {{{
+" Set internal encoding of vim, not needed on neovim, since coc.nvim using some
+" unicode characters in the file autoload/float.vim
+set encoding=utf-8
+
+" TextEdit might fail if hidden is not set.
+set hidden
+
+" Some servers have issues with backup files, see #649.
+set nobackup
+set nowritebackup
+
+" Give more space for displaying messages.
+set cmdheight=2
+
+" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
+" delays and poor user experience.
+set updatetime=300
+set ttimeoutlen=0
+" Don't pass messages to |ins-completion-menu|.
+set shortmess+=c
+" }}}
+
+" tabline ---{{{
+" " show tabline
+" set showtabline=2
+" if has('gui_running')
+	" set guioptions-=e
+" endif
+"
+"---}}}
+
+"
+let g:netrw_cursor=0 " to use userdefined CursorLine and ColorColumn
+let g:netrw_winsize=30
+let g:netrw_liststyle=3
+]]
+)