refactored and switched to config with packer

lua/config/settings.lua

@@ -0,0 +1,67 @@
+local u = require 'config.utils'
+local o = vim.o
+
+-- basic stuff
+o.number = true
+vim.cmd('filetype plugin on')
+vim.cmd('syntax on')
+o.cmdheight = 2
+vim.g.mapleader = ' '
+
+-- line break (wrapping) settings
+o.linebreak = true
+o.breakindent = true
+o.showbreak = '\\ '
+
+-- lines after end of file empty instead of ~ (fillchars)
+o.fcs = 'eob: '
+
+-- tab
+o.expandtab = true
+o.softtabstop = 4
+o.shiftwidth = 4
+
+-- turn of gui colors if in tty
+if os.getenv('TERM') ~= 'linux' then
+    o.termguicolors = true
+else
+    o.termguicolors = false
+end
+
+-- highlight extra white space with red
+vim.api.nvim_set_hl(0, 'TrailingWhitespace', { ctermbg = 'red', bg = '#ff5555' })
+vim.cmd([[match TrailingWhitespace /\s\+$/]])
+
+-- diagnostics
+local signs = { Error = " ", Warn = " ", Hint = " ", Info = " " }
+for type, icon in pairs(signs) do
+    local hl = "DiagnosticSign" .. type
+    vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
+end
+
+vim.diagnostic.config({
+    virtual_text = { prefix = '●' };
+})
+
+-- terminal
+u.map('t', '<esc>', '<C-\\><C-n>')
+u.nmap('<space>tm', '<cmd>belowright 7sp<cr>:term<cr>A')
+
+-- off search highlight when escape is pressed
+u.nmap('<esc>', '<cmd>noh<cr><esc>')
+
+-- colemak
+local l = u.layout
+l.swap('n', 'h')
+l.swap('e', 'j')
+l.swap('i', 'k')
+l.swap('o', 'l')
+
+l.swap('<C-w>n', '<C-w>h')
+l.swap('<C-w>e', '<C-w>j')
+l.swap('<C-w>i', '<C-w>k')
+l.swap('<C-w>o', '<C-w>l')
+
+l.swap('N', 'H')
+l.swap('O', 'L')
+