feat: emit hilbish.cd on fs.cd (closes #350)

golibs/fs/fs.go

@@ -96,12 +96,23 @@ func fcd(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
 		return nil, err
 	}
 	path = util.ExpandHome(strings.TrimSpace(path))
+	oldWd, _ := os.Getwd()
+
+	abspath, err := filepath.Abs(path)
+	if err != nil {
+		return nil, err
+	}
 
 	err = os.Chdir(path)
 	if err != nil {
 		return nil, err
 	}
 
+	util.DoString(t.Runtime, fmt.Sprintf(`
+	local bait = require 'bait'
+	bait.throw('hilbish.cd', '%s', '%s')
+	`, abspath, oldWd))
+
 	return c.Next(), err
 }
 

lua.go

@@ -30,19 +30,11 @@ func luaInit() {
 	// yes this is stupid, i know
 	util.DoString(l, "hilbish = require 'hilbish'")
 
-	lib.LoadLibs(l, fs.Loader)
-	lib.LoadLibs(l, terminal.Loader)
-	lib.LoadLibs(l, snail.Loader)
-
-	cmds = commander.New(l)
-	lib.LoadLibs(l, cmds.Loader)
-
 	hooks = bait.New(l)
 	hooks.SetRecoverer(func(event string, handler *bait.Listener, err interface{}) {
 		fmt.Println("Error in `error` hook handler:", err)
 		hooks.Off(event, handler)
 	})
-
 	lib.LoadLibs(l, hooks.Loader)
 
 	// Add Ctrl-C handler
@@ -57,6 +49,14 @@ func luaInit() {
 		hooks.Emit("hilbish.rawInput", string(r))
 	}
 
+	lib.LoadLibs(l, fs.Loader)
+	lib.LoadLibs(l, terminal.Loader)
+	lib.LoadLibs(l, snail.Loader)
+
+	cmds = commander.New(l)
+	lib.LoadLibs(l, cmds.Loader)
+
+
 	// Add more paths that Lua can require from
 	_, err := util.DoString(l, "package.path = package.path .. " + requirePaths)
 	if err != nil {

nature/commands/cd.lua

@@ -25,5 +25,4 @@ commander.register('cd', function (args, sinks)
 	end
 
 	bait.throw('cd', path, oldPath)
-	bait.throw('hilbish.cd', absPath, oldPath)
 end)

nature/hilbish.lua

@@ -3,6 +3,7 @@ local bait = require 'bait'
 local snail = require 'snail'
 
 hilbish.snail = snail.new()
+hilbish.snail:run 'true' -- to "initialize" snail
 bait.catch('hilbish.cd', function(path)
 	hilbish.snail:dir(path)
 end)