vendor/github.com/posener/complete/log.go

   1 package complete
   2
   3 import (
   4         "io/ioutil"
   5         "log"
   6         "os"
   7 )
   8
   9 // Log is used for debugging purposes
  10 // since complete is running on tab completion, it is nice to
  11 // have logs to the stderr (when writing your own completer)
  12 // to write logs, set the COMP_DEBUG environment variable and
  13 // use complete.Log in the complete program
  14 var Log = getLogger()
  15
  16 func getLogger() func(format string, args ...interface{}) {
  17         var logfile = ioutil.Discard
  18         if os.Getenv(envDebug) != "" {
  19                 logfile = os.Stderr
  20         }
  21         return log.New(logfile, "complete ", log.Flags()).Printf
  22 }