explicitly return newlines to our live command stdin

pkg/commands/exec_live_default.go

@@ -41,10 +41,7 @@ func RunCommandWithOutputLiveWrapper(c *OSCommand, command string, output func(s
 		scanner.Split(scanWordsWithNewLines)
 		for scanner.Scan() {
 			toOutput := strings.Trim(scanner.Text(), " ")
-			toWrite := output(toOutput)
-			if len(toWrite) > 0 {
-				_, _ = ptmx.WriteString(toWrite + "\n")
-			}
+			_, _ = ptmx.WriteString(output(toOutput))
 		}
 	}()
 

pkg/commands/git.go

@@ -266,7 +266,7 @@ func (c *GitCommand) Fetch(unamePassQuestion func(string) string, canAskForCrede
 		if canAskForCredentials {
 			return unamePassQuestion(question)
 		}
-		return "-"
+		return "\n"
 	})
 }
 

pkg/commands/git_test.go

@@ -1045,7 +1045,7 @@ func TestGitCommandPush(t *testing.T) {
 			gitCmd := newDummyGitCommand()
 			gitCmd.OSCommand.command = s.command
 			err := gitCmd.Push("test", s.forcePush, func(passOrUname string) string {
-				return "-"
+				return "\n"
 			})
 			s.test(err)
 		})