If you want lines into strings: 

my ( $key, %data );
while ( <FH> ) {
    if ( /^([^:]+):/ ) {
        $data{ $key = $1 } = $_;
        }
    else {
        $data{ $key } .= $_;
        }
    }

[download]

If you want lines into arrays: 

my ( $key, %data );
while ( <FH> ) {
    if ( /^([^:]+):/ ) {
        $data{ $key = $1 } = [ $_ ];
        }
    else {
        push @{ $data{ $key } }, $_;
        }
    }

[download]

If you just want an array instead of a hash: 

my ( $key, @data );
while ( <FH> ) {
    if ( /^([^:]+):/ ) {
        push @data, [ $_ ];
        }
    else {
        push @{ $data[ -1 ] }, $_;
        }
    }

[download]

Update: and with a single array: 

my ( $key, @data );
while ( <FH> ) {
    if ( /^([^:]+):/ ) {
        push @data, $_;
        }
    else {
        $data[ -1 ] .= $_;
        }
    }

[download]

In reply to Re: I need to regex multiple lines by jwkrahn
in thread I need to regex multiple lines by legend

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