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

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2017-12-02 23:34:35 +00:00
package complete
import (
"io"
"io/ioutil"
"log"
"os"
)
// Log is used for debugging purposes
// since complete is running on tab completion, it is nice to
// have logs to the stderr (when writing your own completer)
// to write logs, set the COMP_DEBUG environment variable and
// use complete.Log in the complete program
var Log = getLogger()
func getLogger() func(format string, args ...interface{}) {
var logfile io.Writer = ioutil.Discard
if os.Getenv(envDebug) != "" {
logfile = os.Stderr
}
return log.New(logfile, "complete ", log.Flags()).Printf
}