refactor: automatically load all nature commands

nature/commands/init.lua

@@ -1,8 +1,19 @@
--- Add command builtins
-require 'nature.commands.cd'
-require 'nature.commands.cdr'
-require 'nature.commands.doc'
-require 'nature.commands.exit'
-require 'nature.commands.disown'
-require 'nature.commands.fg'
-require 'nature.commands.bg'
+local fs = require 'fs'
+
+-- explanation: this specific function gives to us info about
+-- the currently running source. this includes a path to the
+-- source file (info.source)
+-- we will use that to automatically load all commands by reading
+-- all the files in this dir and just requiring it.
+local info = debug.getinfo(1)
+local commandDir = fs.dir(info.source)
+if commandDir == '.' then return end
+
+local commands = fs.readdir(commandDir)
+for _, command in ipairs(commands) do
+	local name = command:gsub('%.lua', '') -- chop off extension
+	if name ~= 'init' then
+		-- skip this file (for obvious reasons)
+		require('nature.commands.' .. name)
+	end
+end