build core, basic and go variants and add template

core/nvim/init.lua

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+-- Change files in place
+vim.o.backupcopy = 'yes'
+
+-- Disable auto comment
+vim.cmd.autocmd('FileType', '*', 'setlocal', 'formatoptions-=cro')
+
+-- Disable double spaces when joining
+vim.o.joinspaces = false
+
+-- Code folding
+vim.o.foldmethod = 'indent'
+vim.o.foldlevel = 99
+
+-- Indentation
+vim.o.tabstop = 2
+vim.o.shiftwidth = 2
+vim.o.softtabstop = -1
+vim.o.expandtab = true
+
+-- Visible line breaks
+vim.o.list = true
+vim.o.listchars = 'eol:¬'
+
+-- Relative line numbers
+vim.o.number = true
+vim.o.relativenumber = true
+
+-- 80 character indication
+vim.o.colorcolumn = '80'
+
+-- Status window height
+vim.o.previewheight = 30
+
+-- Theme
+vim.o.termguicolors = true
+vim.cmd.colorscheme('slate')
+
+-- Keyboard shortcuts
+vim.keymap.set('n', '<c-n>', ':bn<cr>', { silent = true })
+vim.keymap.set('n', '<c-p>', ':bp<cr>', { silent = true })
+vim.keymap.set('n', '<c-l>', ':noh<cr><c-l>')
+vim.keymap.set('n', 'gp', "'[V']", { remap = true })
+vim.keymap.set('i', '<c-b>', '{}<left>', { silent = true } )
+vim.keymap.set('i', '<c-b> ', '{  }<left><left>', { silent = true } )
+vim.keymap.set('i', '<c-b><cr>', '{<cr>}O', { silent = true } )
+vim.keymap.set('i', '<c-space>', '<space>', { remap = true })
+
+-- Add command to show help in current window
+vim.api.nvim_create_user_command('Help', function(a)
+  -- Create empty 'help' buffer
+  vim.cmd.enew()
+  vim.o.buftype = 'help'
+  local buf = vim.fn.bufnr('%')
+
+  -- Show help and handle errors
+  ok, msg = pcall(vim.cmd.help, a.fargs[1] or "help.txt")
+  if not ok then vim.notify(msg, vim.log.levels.ERROR); vim.cmd.bp() end
+
+  -- Wipe out empty buffer if not taken over
+  if vim.fn.bufnr('%') ~= buf then vim.cmd.bwipeout(buf) end
+end, { nargs = '?', bar = true, complete = 'help' })
+
+-- Add command line abbreviation if at start of line
+vim.cmd.cabbrev { 'help',
+  '<c-r>=(getcmdtype() == ":" && getcmdpos() == 1) ? "Help" : "help"<cr>'
+}
+
+-- Source init directory
+vim.cmd 'runtime! init/*.lua'