Can anyone suggest a simple fix to _pdf2html.pl to correct problems with
directories and filenames that have spaces?

I have a collection of more than 1000 pdf files in a directory structure set
up by my client.  The client likes the freedom to have spaces in the
directory and filenames.  If I can figure out how to deal with spaces, I can
avoid a problem with my client.

When using a FileFilter directive for indexing pdf files, one invokes
_pdf2html.pl.  One of the first lines in this script is:

     my $file = shift || die "Usage: $0 <filename>\n";

shift passes in the part of the argument up to the first whitespace, i.e.,
just a portion of the full pathname.  stderr gets a usage message and the
file is not indexed.