I bid you welcome to the wonderful world of regular expressions (aka regexes). More information can be learned about these from perlre. Here's my version:
my $string = q{
this
is
a
sample
text.
all single blank lines will be removed.
all double, triple, or more
blank lines will not
be touched.
};
$string =~
s#\n(\n+)#"\n" x (length($1)>1 ? length($1)+1 : length($1))#eg;
print $string;
__END__
this
is
a
sample
text.
all single blank lines will be removed.
all double, triple, or more
blank lines will not
be touched.
-
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-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
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