You seem to have a quoting problem, because the regex doesn't throw a syntax error without the string eval (why do you need that anyway?)

I'd suggest to write the main part of the regex outside the string eval, then you don't have to care about quoting. 

my $main_re = qr/[^&#?(\w{2,7});|\\xeb|\\x(\w{2})|\\\\x(\w{2})|\\(\w{2
+,7})|\\'|\\\'|\'|\\"|\\"|\\"|\\\\|\w{5}|a-z|<(.*)>|<\/?.*>]/

[download]

Then you can interpolate $main_re into the regex.

BTW your regex is absolutely horrible to read, you should use the /e modifier and insert whitespaces, line breaks and comment.

Update: You seem to have alternatives (|) inside a (negated) char class - that makes no sense at all. Or did the markup go astray?

Perl 6 in German -- Difficult Sudoku

In reply to Re: Strange regexp problem by moritz
in thread Strange regexp problem by rocketman

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