Windows paths test

main.go

package main

import (
	"io/fs"
	"log"
	"os"
	"path"
)

func main() {
	filesystem := os.DirFS("C:\\")

	// 1st case
	dirPath := path.Join("C:\\FooBar", "baz")
	entries, err := fs.ReadDir(filesystem, dirPath)
	if err != nil {
		log.Fatal(err)
	}
	log.Printf("1: entries: %d", len(entries))
	for _, entry := range entries {
		log.Printf("entry: %q\n", entry.Name())
	}

	// 2nd case
	filePath := path.Join("C:\\FooBar\\baz", "blah.txt")
	f, err := fs.ReadFile(filesystem, filePath)
	if err != nil {
		log.Fatal(err)
	}
	log.Printf("2: file content: %q", string(f))

	// 3rd case
	f, err = fs.ReadFile(os.DirFS("C:\\FooBar\\baz"), "blah.txt")
	if err != nil {
		log.Fatal(err)
	}
	log.Printf("3: file content: %q", string(f))
}