On Tue, Jan 27, 2004 at 04:55:28PM -0500, Tolkin, Steve wrote:
> # run using e.g. echo hello | perl this-file
>
> # Why doesn't perl produce a warning from {3-8} ? This seems
> # to be a syntax error. It surely is not the way to match strings of length
> 3 - 8. It
> # should be {3,8} .
>
> while (<>) {
> if (/[a-z]{3-8}/) {
> print;
> }
> }
perldoc perlre:
The following standard quantifiers are recognized:
* Match 0 or more times
+ Match 1 or more times
? Match 1 or 0 times
{n} Match exactly n times
{n,} Match at least n times
{n,m} Match at least n but not more than m times
(If a curly bracket occurs in any other context, it is treated as a
regular character.)
In other words, in Perl /[a-z]{3-8}/ is equivalent to /[a-z]\{3-8\}/.
Ronald
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