Replace "default find command" with built-in directory traversal

src/constants.go

@@ -2,7 +2,6 @@ package fzf
 
 import (
 	"math"
-	"os"
 	"time"
 
 	"github.com/junegunn/fzf/src/util"
@@ -54,16 +53,6 @@ const (
 	defaultJumpLabels string = "asdfghjklqwertyuiopzxcvbnm1234567890ASDFGHJKLQWERTYUIOPZXCVBNM`~;:,<.>/?'\"!@#$%^&*()[{]}-_=+"
 )
 
-var defaultCommand string
-
-func init() {
-	if !util.IsWindows() {
-		defaultCommand = `set -o pipefail; command find -L . -mindepth 1 \( -path '*/.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \) -prune -o -type f -print -o -type l -print 2> /dev/null | cut -b3-`
-	} else if os.Getenv("TERM") == "cygwin" {
-		defaultCommand = `sh -c "command find -L . -mindepth 1 -path '*/.*' -prune -o -type f -print -o -type l -print 2> /dev/null | cut -b3-"`
-	}
-}
-
 // fzf events
 const (
 	EvtReadNew util.EventType = iota