Describe the bug

fsnotify.Watcher.Add with a directory instead of file (at least in kqueue implementation) ignores all files after the first symbolic link that points to a nonexistent file and returns a file does not exist error.

This change is suspected.

Code to Reproduce

Code

package main

import (
	"github.com/fsnotify/fsnotify"
)

func check(err error) {
	if err != nil {
		panic(err)
	}
}

func main() {
	w, err := fsnotify.NewWatcher()
	check(err)
	defer w.Close()

	err = w.Add("/another/directory")
	check(err)
}

Expected result

Exit code: 0

Actual result

panic: "/another/directory/aaa": no such file or directory

File operations to reproduce

1. $ touch /some/directory/aaa

2. $ ln -s /another/directory/aaa /some/directory/aaa

3. $ rm /some/directory/aaa

Which operating system and version are you using?

ProductName:            macOS
ProductVersion:         26.1
BuildVersion:           25B78

Which fsnotify version are you using?

1.9.0

Did you try the latest main branch?

Yes