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Subject: Re: emacs regexp question
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D. Goel <deego@gnufans.org> writes:

>> - How should I ask for the first occurrence of N blank lines for
>> some fixed, yet large, N.
>
> "\n\n\n\n..."  I don't think there's another way to do it using emacs'
> regexps.

You can use the \{M\} postfix operator (M integer).

So e.g. "\n\\{500\\}" would match exactly 500 blank lines.