settings.lua

-----------------------------------------------------------
-- Neovim settings
-----------------------------------------------------------

-----------------------------------------------------------
-- Neovim API aliases
-----------------------------------------------------------
--local map = vim.api.nvim_set_keymap  -- set global keymap
local cmd = vim.cmd     				-- execute Vim commands
local exec = vim.api.nvim_exec 	-- execute Vimscript
local fn = vim.fn       				-- call Vim functions
local g = vim.g         				-- global variables
local opt = vim.opt         		-- global/buffer/windows-scoped options

-- testing issue
vim.lsp.set_log_level('debug')

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-- General
-----------------------------------------------------------
opt.mouse = 'a'               -- enable mouse support
opt.clipboard = 'unnamedplus' -- copy/paste to system clipboard
opt.swapfile = false          -- don't use swapfile

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-- Neovim UI
-----------------------------------------------------------
opt.number = true             -- show line number
opt.relativenumber = true
opt.showmatch = true          -- highlight matching parenthesis
opt.foldmethod = 'marker'     -- enable folding (default 'foldmarker')
-- opt.colorcolumn = '80'        -- line lenght marker at 80 columns
opt.splitright = true         -- vertical split to the right
opt.splitbelow = true         -- horizontal split to the bottom
opt.ignorecase = true         -- ignore case letters when search
opt.smartcase = true          -- ignore lowercase for the whole pattern
opt.linebreak = true          -- wrap on word boundary
opt.hlsearch = false

-- gruvbox settings
g.gruvbox_contrast_dark='hard'
g.gruvbox_contrast_light='hard'
g.gruvbox_invert_selection='0'

-- remove whitespace on save
cmd [[au BufWritePre * :%s/\s\+$//e]]


-- highlight on yank
exec([[
  augroup YankHighlight
    autocmd!
    autocmd TextYankPost * silent! lua vim.highlight.on_yank{higroup="IncSearch", timeout=700}
  augroup end
]], false)

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-- Memory, CPU
-----------------------------------------------------------
opt.hidden = true         -- enable background buffers
opt.history = 100         -- remember n lines in history
opt.lazyredraw = true     -- faster scrolling
opt.synmaxcol = 240       -- max column for syntax highlight

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-- Colorscheme
-----------------------------------------------------------
opt.termguicolors = true      -- enable 24-bit RGB colors
-- cmd [[colorscheme rose-pine]]
cmd [[colorscheme gruvbox]]

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-- Tabs, indent
-----------------------------------------------------------
opt.expandtab = true      -- use spaces instead of tabs
opt.shiftwidth = 4        -- shift 4 spaces when tab
opt.tabstop = 4           -- 1 tab == 4 spaces
opt.smartindent = true    -- autoindent new lines
opt.smarttab = true
opt.softtabstop = 4

-- don't auto commenting new lines
cmd [[au BufEnter * set fo-=c fo-=r fo-=o]]

-- remove line lenght marker for selected filetypes
cmd [[autocmd FileType text,markdown,html,xhtml,javascript setlocal cc=0]]

-- 4 spaces for selected filetypes
cmd [[
  autocmd FileType xml,html,xhtml,css,scss,javascript,lua,yaml setlocal shiftwidth=4 tabstop=4
]]

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-- Compile and Run shortcuts
-----------------------------------------------------------
cmd [[
autocmd filetype python nnoremap <C-c> :w <bar> exec '!python3 '.shellescape('%')<CR>
]]

cmd [[ autocmd filetype rust nnoremap <C-c> :w <bar> exec '!rustc '.shellescape('%').' -o '.shellescape('%:r').' && ./'.shellescape('%:r')<CR> ]]

cmd [[ autocmd filetype c nnoremap <C-c> :w <bar> exec '!gcc '.shellescape('%').' -o '.shellescape('%:r').' && ./'.shellescape('%:r')<CR>
]]

cmd [[ command GO :w <bar> !g++ -D DEBUG -std=c++17 % -o %:r && ./%:r < in ]]

cmd [[ autocmd filetype cpp nnoremap <C-c> :w <bar> exec '!g++ -std=c++17 '.shellescape('%').' -o '.shellescape('%:r').' && ./'.shellescape('%:r')<CR> ]]

cmd [[ autocmd BufNewFile *.cpp 0r ~/.template/simple.cpp ]]

cmd [[ command GB :colorscheme gruvbox ]]
cmd [[ command RP :colorscheme rose-pine ]]

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-- Autocompletion
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-- insert mode completion options
opt.completeopt = 'menuone,noselect'

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-- Terminal
-----------------------------------------------------------
-- open a terminal pane on the right using :Term
cmd [[command Term :botright vsplit term://$SHELL]]

-- Terminal visual tweaks
--- enter insert mode when switching to terminal
--- close terminal buffer on process exit
cmd [[
    autocmd TermOpen * setlocal listchars= nonumber norelativenumber nocursorline
    autocmd TermOpen * startinsert
    autocmd BufLeave term://* stopinsert
]]

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-- Startup
-----------------------------------------------------------
-- disable builtins plugins
local disabled_built_ins = {
    "netrw",
    "netrwPlugin",
    "netrwSettings",
    "netrwFileHandlers",
    "gzip",
    "zip",
    "zipPlugin",
    "tar",
    "tarPlugin",
    "getscript",
    "getscriptPlugin",
    "vimball",
    "vimballPlugin",
    "2html_plugin",
    "logipat",
    "rrhelper",
    "spellfile_plugin",
    "matchit"
}

for _, plugin in pairs(disabled_built_ins) do
    g["loaded_" .. plugin] = 1
end

-- disable nvim intro
-- opt.shortmess:append "sI"