.vimrc

colorscheme onehalflight
"colorscheme gruvbox
"set background=dark

" Disable bell
set visualbell
set t_vb=

set t_u7=
set tabstop=4
set shiftwidth=4 smarttab
set autoindent
filetype plugin on
syntax on
set number
set mouse=a
set nopaste
" https://unix.stackexchange.com/questions/93144/exit-vim-more-quickly
inoremap <C-q> <esc>
vnoremap <C-q> <esc>
nnoremap <C-q> :q<cr>

" https://superuser.com/questions/1056929/open-file-in-vertical-split-in-vim-netrw/1062063
let g:netrw_altv=1

" https://shapeshed.com/vim-netrw/
let g:netrw_banner = 0
let g:netrw_liststyle = 3
let g:netrw_browse_split = 4
"let g:netrw_altv = 1
let g:netrw_winsize = 25
augroup ProjectDrawer
	autocmd!
	" https://stackoverflow.com/questions/72104299/how-to-make-netrw-explorer-appears-automatically-on-the-left-side-when-opening-a
	"autocmd TabNew * :Vexplore
	autocmd VimEnter * :Vexplore
augroup END

" A vertical split is used. (for horizontal splitting, see netrw-o) Normally, the v key splits the window vertically with the new window and cursor at the left. Just press t instead of pressing Enter for a new tab, or v for a new vertical split. In Vim, tabs contain splits.
" https://gist.github.com/Starefossen/5957088

" https://www.reddit.com/r/neovim/comments/jr5zdb/remapping_keys_in_netrw/
augroup netrw_mapping
    autocmd!
    autocmd filetype netrw call NetrwMapping()
augroup END

function! NetrwMapping()
    nmap <buffer> <right> <CR>
    nmap <buffer> <left> <CR>
    nmap <buffer> <Tab> <CR>
	"nmap <buffer> <space> <CR>
	" Uncomment when using default netrw
    "nmap <buffer> <left> -<esc>
endfunction

" https://superuser.com/questions/410982/in-vim-how-can-i-quickly-switch-between-tabs
noremap <leader>1 1gt
noremap <leader>2 2gt
noremap <leader>3 3gt
noremap <leader>4 4gt
noremap <leader>5 5gt
noremap <leader>6 6gt
noremap <leader>7 7gt
noremap <leader>8 8gt
noremap <leader>9 9gt
noremap <leader>0 :tablast<cr>

"noremap <space><left> <C-w><left>
"noremap <space><right> <C-w><right>
"noremap <space><up> gT
"noremap <space><down> gt
"noremap <Tab> <C-w>w

"map <C-up> <C-w><up>
"map <C-down> <C-w><down>
"map <C-left> <C-w><left>
"map <C-right> <C-w><right>
map <expr><silent> <C-left> tabpagenr('$') > 1 ? 'gT' : '<C-w><left>'
map <expr><silent> <C-right> tabpagenr('$') > 1 ? 'gt' : '<C-w><right>'
"map <C-left> gT
"map <C-right> gt

" :Vex open netrw in split
" netrw t = open in new tab, v = open in split

nnoremap a i
nnoremap i a

set timeoutlen=1000
set ttimeoutlen=0

noremap <silent> <C-S>          :update<CR>
vnoremap <silent> <C-S>         <C-C>:update<CR>
inoremap <silent> <C-S>         <C-O>:update<CR>

noremap <C-f> /
noremap <CR> n
noremap <backspace> d
inoremap <C-f> <C-o>/

" https://vim.fandom.com/wiki/Format_pasted_text_automatically
nnoremap p p=`]

set whichwrap+=<,>,[,]

" https://vi.stackexchange.com/questions/202/scroll-the-screen-not-the-cursor-when-using-scrollwheel
"nmap <Down> <C-e>
"nmap <Up> <C-y>

"nnoremap <LeftMouse> i
"inoremap <RightMouse> <C-c>pi
"vnoremap <RightMouse> y<C-c>
"nnoremap <RightMouse> p

" https://stackoverflow.com/questions/4766230/map-shift-tab-in-vim-to-inverse-tab-in-vim
" for command mode
nnoremap <S-Tab> <<
nnoremap <Tab> >>
" for insert mode
inoremap <S-Tab> <C-d>
vnoremap <S-Tab> <gv
vnoremap <Tab> >gv
xnoremap <S-Tab> <gv
xnoremap <Tab> >gv
snoremap <Tab> <C-o>>gv<C-g>
snoremap <S-Tab> <C-o><gv<C-g>

inoremap <c-y> <c-o>:redo<CR>
vnoremap <c-y> <c-c>:redo<CR>gv
nnoremap <c-y> :redo<CR>

" https://stackoverflow.com/questions/12436154/how-to-go-back-ctrlz-in-vi-vim
"inoremap <c-z> <c-o>:u<CR>
vnoremap <c-z> <c-c>:u<CR>gv
nnoremap <c-z> :u<CR>      " Avoid using this**

" vnoremap <C-c> y<C-c>i
" `] goto end of pasted text
" inoremap <C-v> <C-c>p`]a

" https://stackoverflow.com/questions/9721732/mapping-shift-arrows-to-selecting-characters-lines
" nmap <S-Up> v<Up>
" nmap <S-Down> v<Down>
" nmap <S-Left> v<Left>
" nmap <S-Right> v<Right>
" vmap <S-Up> <Up>
" vmap <S-Down> <Down>
" vmap <S-Left> <Left>
" vmap <S-Right> <Right>
" imap <S-Up> <Esc>v<Up>
" imap <S-Down> <Esc>v<Down>
" imap <S-Left> <Esc>v<Left>
" imap <S-Right> <Esc>v<Right>

vmap <C-c> y<Esc>i
vmap <C-x> d<Esc>i
"map <C-v> pi
imap <C-v> <Esc>p`]i
imap <C-z> <Esc>u
nnoremap <C-v> p`]i
nnoremap <space> i

inoremap <C-o> <Esc>:e
nnoremap <C-o> :e
inoremap <C-d> <Esc>yypi
nnoremap <C-d> yypi

nnoremap <C-a> ggVG
inoremap <C-a> <Esc>ggVG
vnoremap <C-a> <Nop>
vnoremap <Right> <Esc>G
vnoremap <Left> <Esc>gg
vnoremap <backspace> di

" for reg in ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9'] 
"for reg in ['a','b','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9'] 
"    execute 'vnoremap ' .. reg .. ' d<Esc>i' .. reg .. ''
"endfor

vnoremap <space> d<Esc>i<space>
vnoremap <cr> d<Esc>i<cr>

set keymodel=startsel,stopsel

" https://stackoverflow.com/questions/80677/what-is-the-difference-between-c-c-and-c-in-vim
inoremap <C-c> <Esc><Esc>

" WSL yank support
let s:clip = '/mnt/c/Windows/System32/clip.exe'  " change this path according to your mount point
if executable(s:clip)
	augroup WSLYank
		autocmd!
		autocmd TextYankPost * if v:event.operator ==# 'y' | call system(s:clip, @0) | endif
	augroup END
endif

" https://vi.stackexchange.com/questions/29129/how-do-i-make-the-cursor-blink
augroup cursor_behaviour
    autocmd!

    " reset cursor on start:
    autocmd VimEnter * silent !echo -ne "\e[2 q"
    " cursor blinking bar on insert mode
    let &t_SI = "\e[5 q"
    " cursor steady block on command mode
    let &t_EI = "\e[2 q"

    " highlight current line when in insert mode
    autocmd InsertEnter * set cursorline
    " turn off current line highlighting when leaving insert mode
    autocmd InsertLeave * set nocursorline

augroup END