Follow-up Comment #2, patch #6869 (project grep):
> The usage of `echo' is incorrect. Instead, use `printf'.
> $ /bin/echo -e "x81x30x89x38"
> x81x30x89x38
No, it's not different of my result.
% /bin/echo -e "x81x30x89x38" | od -tx1 -Ax
000000 81 30 89 38 0a
000005
Did you run the terminal on zh_CN.GB18030 ?
Also the problem is egrep/fgrep but not grep.
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