[go-nuts] Is embed.FS not expected to be walkable by fs.WalkDir()?

[John]

package main

import (
"embed"
"io/fs"
"log"
)

//go:embed somefile.txt
var FS embed.FS

func main() {
  err := fs.WalkDir(
    FS,
    "",
    func(path string, d fs.DirEntry, err error) error {
      log.Println("path: ", path)
      return nil
    },
  )

  if err != nil {
    log.Println("err: ", err)
  }
}

This will output a single empty long line:

2021/06/20 22:32:29 path:  

d comes set to nil, which seems to be a valid condition according to the 
docs:

*First, if the initial fs.Stat on the root directory fails, WalkDir calls 
the function with path set to root, d set to nil, and err set to the error 
from fs.Stat.*

This seems like an undesirable outcome to be unable to walk the embed.FS, 
but I figure maybe it doesn't do so to only allow absolute paths for speed?




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