Added some simple key mappings

Simple buffer-based "auto" complete
Auto-trim trailing whitespace on write

config/nvim/init.lua

@@ -1,3 +1,6 @@
+local MAP     = vim.keymap.set
+local AUTOCMD = vim.api.nvim_create_autocmd
+
 vim.cmd("colorscheme scheme")
 vim.cmd("filetype indent on")
 
@@ -52,4 +55,46 @@ vim.opt.formatoptions:append("/")
 vim.opt.cinkeys:append("0=break")
 vim.opt.listchars:append({ lead = "." })
 
+--------------------------------------------------------------------------------
+-- Functions
+--------------------------------------------------------------------------------
 
+-- Buffers
+
+local function BufferComplete()
+	local pos   = vim.api.nvim_win_get_cursor(0)
+	local line  = vim.fn.getline('.')
+	local ident = line:sub(1, pos[2]):match("[^ \t]*$")
+
+	return #ident ~= 0 and "<C-P>" or "<Tab>"
+end
+
+local function TrimBuffer()
+	local view = vim.fn.winsaveview()
+	vim.cmd("%s/\\s\\+$//e")
+	vim.fn.winrestview(view)
+end
+
+-- Input mappings
+
+vim.g.mapleader = " "
+
+MAP("n", "<A-j>",     "mz:m+<CR>")
+MAP("n", "<A-k>",     "mz:m-2<CR>")
+MAP("n", "<Esc>",     ":nohl<CR>")
+MAP("n", "<Leader>n", ":cnext<CR>")
+MAP("n", "<Leader>N", ":cprev<CR>")
+MAP("n", "J",         "}")
+MAP("v", "J",         "}")
+MAP("n", "K",         "{")
+MAP("v", "K",         "{")
+MAP("n", "<Leader>k", ":Man<CR>")
+MAP("i", "<S-Tab>",   "<C-o><<")
+MAP("i", "<Tab>",     BufferComplete, { expr = true })
+
+-- Autocommands
+
+AUTOCMD('BufEnter',    { command = "let b:man_default_sects=\"2,3\"", pattern = "*.c"      })
+AUTOCMD('BufReadPost', { command = "setlocal nornu",                  pattern = "quickfix" })
+
+AUTOCMD('BufWritePre', { callback = TrimBuffer, pattern = "*" })