Sorry, I thought that the concise form would be easier to follow. Here is the full code:

use strict; use warnings;
use Win32::OLE;
use Win32::OLE::Const 'Microsoft Word';
use Cwd 'abs_path';

my $book = shift;
if ( !$book ) { die "usage: $0 <word file>"; }
$book = abs_path( $book );
my $word = Win32::OLE->GetActiveObject('Word.Application') || Win32::O
+LE->new('Word.Application');
$word->{'Visible'} = 0;
$word->{DisplayAlerts} = 1;
my $file = $word->Documents->Open( $book );
if ( !$file ) { die "cannot open $book"; }

my $paragraphs = $file->Paragraphs();
my $n = $paragraphs->Count();
for my $p (1..$n) {
  my $paragraph = $paragraphs->Item( $p );
  print "paragraph $p\n";
  print "before: $paragraph->{Style}->{NameLocal}\n";
  my $text = $paragraph->{Range}->{Text};
  $paragraph->{Range}->{Text} = $text;
  print "after: $paragraph->{Style}->{NameLocal}\n\n";
}
$file->Close();
[download]

Output:

paragraph 1
before: Heading 1
after: Heading 2

paragraph 2
before: Heading 2
after: Heading 3

paragraph 3
before: Heading 3
after: Normal

paragraph 4
before: Normal
after: Normal
[download]

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