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Re: A Regular Expression Problem in Perl 5.28

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Uri Guttman
March 28, 2023 21:07
Re: A Regular Expression Problem in Perl 5.28
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On 3/28/23 17:01, Martin McCormick wrote:
> Uri Guttman <> writes:
>> why are you escaping the {}?? those are meta chars that are needed to make
>> that a 5+ range. just delete the backslashes on them and it will work.
> 	First, thank you but read on, please.
> 	I couldn't agree more.  That should do it but when I
> don't escape them, I get:
> Nested quantifiers in regex; marked by <-- HERE in m//^\d+{ <-- HERE 3,}// at ./regex line 10.
you also quoted the whole regex in '' but included the // which are the 
normal regex delimiters. remove the outer quotes.

and use the qr// form for regexes.

and you don't want the + after the \d as the {5,} is the count. you 
can't have both types of repeat counts.

my $re = qr/^\d{5,}/ ;

that should be all you need.

read perlretut to learn more regex basics. you have escaping and quoting 
mistakes in the original.


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