Is "cpp -P" POSIX? I poked around at http://www.opengroup.org/onlinepubs/9699919799 and could find only matches to "preprocessor" rather than "cpp" in the search facility, and so surmise "no", but thought i'd ask here anyway. I suppose a portable workaround would be: cpp FILENAME | sed '/^#/d' but have fingers crossed nonetheless... -- Thien-Thi Nguyen GPG key: 4C807502
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