Fix grep option --dereference-recursive unavailable.
Fix grep option --dereference-recursive unavailable.

Error message:
    $ se $keyword
    grep: unrecognized option `--dereference-recursive'
    usage: grep [-abcDEFGHhIiJLlmnOoqRSsUVvwxZ] [-A num] [-B num] [-C[num]]
    	[-e pattern] [-f file] [--binary-files=value] [--color=when]
    	[--context[=num]] [--directories=action] [--label] [--line-buffered]
    	[--null] [pattern] [file ...]

zborboa-g/dot-star,dot-star/dot-star