Hi Hauke, what I am trying to build is a preprocessor for a format that has embedded free-form Perl within <% ... %> limiters. This in itself is easy since I can simply open(|perl) and send stuff to it, but the second quirk is that there is also a second level of preprocessor macros following Verilog convention (e.g. `include FILE). The corner case that is hard to handle is `include <%$file%> which implies that I need to first send it through Perl, then include the file, which may internally have more Perl :( This is why I was trying to set up a bidirectional link to a Perl process. I'll look at some of the other suggestions in the thread. Thanks Pankaj

In reply to Re^2: Running Perl in an Expect loop by StoneLeopard
in thread Running Perl in an Expect loop by StoneLeopard

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