Hi Heinz-Jürgen, > Whatever the reason is, convert adds an \x00 byte after the Title: > which results in an abort of the grep command. May be it is a bug in > convert, who knows. As a work arounfd the grep command line flag -a > can be used and the macro works.
GNU grep's -a isn't portable. The traditional way to delete every ASCII NUL byte would be «tr -d '\0'» feeding tr(1) standard input. -- Cheers, Ralph. https://plus.google.com/+RalphCorderoy