...This is all wrapped in an eval, so I catch badly formed regexps; I am worried about intentional or unintentional ill-effects beyond an error...

You should use taint.

You should be aware of what use re 'eval' allows you to do with regular expressions.

And you should of course be aware of source code injection. Suppose the user specifies: "a/; system( 'some evil command' ); m/a" and your code is: 

eval "m/$query/";

[download]
you're in deep trouble.

Liz

In reply to Re: User regexps by liz
in thread User regexps by rkg

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