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发表于 2014-1-16 21:39:56
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试试看这个:
regexp
-line
Enables newline-sensitive matching. By default, newline is a completely ordinary character with no special meaning. With this flag, “[^” bracket expressions and “.” never match newline, “^” matches an empty string after any newline in addition to its normal function, and “$” matches an empty string before any newline in addition to its normal function. This flag is equivalent to specifying both -linestop and -lineanchor, or the (?n) embedded option (see the re_syntax manual page). |
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