liuyang1 c0fe871b33 fix except case ...

- when redirect stdout to pipe but not tty, it throw exception.
- when have no content, it throw exception.
- remove reductant newline at end of file

2018-06-13 18:58:37 +08:00

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cheat

fix except case

2018-06-13 18:58:37 +08:00