feat: add command.not-found hook

preload.lua

@@ -1,10 +1,10 @@
 -- The preload file initializes everything else for our shell
--- Currently it just adds our builtins
 
 local fs = require 'fs'
 local commander = require 'commander'
 local bait = require 'bait'
 
+-- Builtins
 commander.register('cd', function (args)
 	bait.throw('cd', args)
 	if #args > 0 then
@@ -86,3 +86,8 @@ function string.split(str, delimiter)
 	return result
 end
 
+-- Hook handles
+bait.catch('command.not-found', function(cmd)
+	print(string.format('hilbish: %s not found', cmd))
+end)
+

shell.go

@@ -123,7 +123,7 @@ func execCommand(cmd string) error {
 		}
 
 		if _, err := interp.LookPathDir(hc.Dir, hc.Env, args[0]); err != nil {
-			fmt.Printf("hilbish: %s not found\n", args[0])
+			hooks.Em.Emit("command.not-found", args[0])
 			return interp.NewExitStatus(127)
 		}