--walker-skip symlink-to-dir not skipped

[junegunn]

Checklist

• I have read through the manual page (man fzf)
• I have searched through the existing issues
• For bug reports, I have checked if the bug is reproducible in the latest version of fzf

Output of fzf --version

0.53.0

OS

• Linux
• macOS
• Windows
• Etc.

Shell

• bash
• zsh
• fish

Problem / Steps to reproduce

Related: #3857

mkdir -p /tmp/foo/bar/baz
cd /tmp/foo
ln -s bar bar2
find -L *
  # bar
  # bar/baz
  # bar2
  # bar2/baz

unset FZF_DEFAULT_OPTS FZF_DEFAULT_COMMAND

# Same result as find
fzf --walker file,dir,follow -f '' | sort
  # bar
  # bar/baz
  # bar2
  # bar2/baz

# bar2 is not skipped, because it's not a directory but a symlink to a directory
fzf --walker file,dir,follow --walker-skip bar2 -f '' | sort
  # bar
  # bar/baz
  # bar2
  # bar2/baz

diff --git a/src/reader.go b/src/reader.go
index 528f370..7728ed3 100644
--- a/src/reader.go
+++ b/src/reader.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"io"
+	"io/fs"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -222,6 +223,16 @@ func (r *Reader) readFromStdin() bool {
 	return true
 }
 
+func isSymlinkToDir(path string, de os.DirEntry) bool {
+	if de.Type()&fs.ModeSymlink == 0 {
+		return false
+	}
+	if s, err := os.Stat(path); err == nil {
+		return s.Mode()&fs.ModeDir > 0
+	}
+	return false
+}
+
 func (r *Reader) readFiles(root string, opts walkerOpts, ignores []string) bool {
 	r.killed = false
 	conf := fastwalk.Config{Follow: opts.follow}
@@ -232,7 +243,7 @@ func (r *Reader) readFiles(root string, opts walkerOpts, ignores []string) bool
 		path = filepath.Clean(path)
 		if path != "." {
 			isDir := de.IsDir()
-			if isDir {
+			if isDir || opts.follow && isSymlinkToDir(path, de) {
 				base := filepath.Base(path)
 				if !opts.hidden && base[0] == '.' {
 					return filepath.SkipDir