r{n}
r{n,}
r{n,m} One or two numbers inside braces denote an interval expression. If there is one number in the
braces, the preceding regular expression r is repeated n times. If there are two numbers sepa-
rated by a comma, r is repeated n to m times. If there is one number followed by a comma, then r
is repeated at least n times.
Interval expressions are only available if either --posix or --re-interval is specified on the
command line.作者: zooyo 時(shí)間: 2012-04-26 15:17
提示: 作者被禁止或刪除 內(nèi)容自動(dòng)屏蔽作者: ulovko 時(shí)間: 2012-04-26 15:36