[nvim] Convert init.vim to init.lua and copy over a bit of the vimrc config to some lua scripts

This is neat!

config/nvim/init.lua

@@ -0,0 +1,7 @@
+-- Eryn Wells <eryn@erynwells.me>
+
+vim.opt.runtimepath:prepend "~/.vim"
+vim.cmd [[ source ~/.vimrc.common ]]
+
+require 'configuration'
+require 'keys'

config/nvim/init.vim

@@ -1,29 +0,0 @@
-set runtimepath^=~/.vim runtimepath+=~/.vim/after
-let &packpath = &runtimepath
-
-source ~/.vimrc.common
-
-let g:python_host_prog=$HOME.'/.virtualenvs/neovim/bin/python'
-let g:python3_host_prog=$HOME.'/.virtualenvs/neovim/bin/python3'
-
-" Backup files are saved here when files are overwritten
-set backupdir=stdpath("data")."/backup"
-
-" Swap files are saved here while files are being edited
-set directory=stdpath("data")."/swap"
-
-" Shared data file lives here
-set shadafile=stdpath("data")."/nvim_shared_data"
-
-" Fields to save in the Shada file. Parameters as follows: (see :help shada)
-"   %   number of buffers to save and restore when no file argument is given
-"   '   maximum number of previously edited files for which marks are remembered
-"   h   disable highlighted search patterns on start
-"   /   omitted, so all search history is saved
-"   <   maximum number of lines saved for each register
-"   :   maximum number of lines of command history to save
-"   s   shada entries over 100 KiB are skipped
-set shada=%100,'1000,h,<1000,:1000,s100
-
-" Undo history for files is saved here
-set undodir=stdpath("data")."/undo"

config/nvim/lua/configuration.lua

@@ -0,0 +1,109 @@
+-- Eryn Wells <eryn@erynwells.me>
+
+-- [[ Editor Confguration ]]
+local opt = vim.opt
+
+-- Reread files when they change outside of neovim
+opt.autoread = true
+-- Don't write files before switching buffers
+opt.autowrite = false
+
+opt.fileformats = {"unix", "dos", "mac"}
+
+-- When creating splits, split on the right and below by default
+opt.splitright = true
+opt.splitbelow = true
+
+-- Show line numbers
+opt.number = true
+
+-- Customize the status bar a bit. Show the ruler, mode, and the command as the
+-- last line of the screen.
+opt.ruler = true
+opt.showmode = true
+opt.showcmd = true
+
+-- Never beep!
+opt.visualbell = true
+opt.errorbells = false
+
+-- Wrap text rather than letting it run offscreen
+opt.wrap = true
+opt.linebreak = true
+opt.textwidth = 120
+opt.colorcolumn = {80, 90, 120}
+opt.showmatch = true
+
+opt.formatoptions:append("n")
+
+-- When in list mode (showing whitespace) use some nicer Unicode characters.
+opt.list = false
+opt.listchars = {
+    tab = "▸ ",
+    eol = "¬",
+    trail = "･",
+    extends = "→",
+    nbsp = "･",
+}
+
+-- Search options. Ignore case by default, but be case sensitive if the pattern
+-- contains a capital. Incrementally search, rather than waiting until you hit
+-- <Enter>. Search globally by default, rather than just on the current line.
+opt.ignorecase = true
+opt.smartcase = true
+opt.incsearch = true
+opt.gdefault = true
+
+-- Prefer spaces to tabs. Indent tab characters 8 spaces, and soft indent 4
+-- spaces. Never write tabs if you can help it, and do some nice things when
+-- wrapping and joining and copying.
+opt.tabstop = 8
+opt.shiftwidth = 4
+opt.softtabstop = 4
+opt.shiftround = true
+opt.expandtab = true
+opt.joinspaces = false
+opt.autoindent = true
+opt.copyindent = true
+
+-- Always show the last command you typed.
+opt.laststatus = 2
+
+opt.background = "dark"
+
+-- Save all this metadata while editing.
+opt.swapfile = true
+opt.backup = true
+opt.undofile = true
+opt.backupdir = {vim.fn.stdpath("data") .. "/backup//", "."}
+
+-- Fields to save in the Shada file. Parameters as follows: (see :help shada)
+--   %   number of buffers to save and restore when no file argument is given
+--   '   maximum number of previously edited files for which marks are remembered
+--   h   disable highlighted search patterns on start
+--   /   omitted, so all search history is saved
+--   <   maximum number of lines saved for each register
+--   :   maximum number of lines of command history to save
+--   s   shada entries over 100 KiB are skipped
+opt.shada = {"%100", "'1000", "h", "<1000", ":1000", "s100"}
+
+-- Scroll ahead of the point a bit in each direction
+opt.scrolloff = 3
+opt.sidescrolloff = 5
+
+opt.wildmenu = true
+opt.wildmode = {"longest", "list"}
+opt.wildignore = {
+    -- Build artifacts
+    "*.o", "*.pyc", "*.lo", "*.class",
+    -- Swap files
+    "*~",
+    -- Non-text things
+    "*.db", "*.pdf", "*.jpg", "*.jpeg", "*.png", "*.gif",
+    -- Auto-generated things
+    ".git", "env", "migrations"
+}
+
+if vim.fn.has("mouse") then
+    opt.mouse = "a"
+end

config/nvim/lua/keys.lua

@@ -0,0 +1,22 @@
+-- Eryn Wells <eryn@erynwells.me>
+
+local map = vim.keymap.set
+
+vim.g.mapleader = ","
+
+local options = { silent = true }
+
+-- Allow starting commands with ; instead of typing Shift-;. Save lots of keypresses!
+map('n', ';', ':')
+
+map('n', '<C-h>', '<C-w>h', options)
+map('n', '<C-j>', '<C-w>j', options)
+map('n', '<C-k>', '<C-w>k', options)
+map('n', '<C-l>', '<C-w>l', options)
+
+map('n', '<C-n>', ':bn<CR>', options)
+map('n', '<C-p>', ':bp<CR>', options)
+
+map('n', '<leader><space>', function()
+    vim.exec [[ setlocal invhlsearch ]]
+end, options)