> is the answer to do this in multiple passes with different sets of macros?
Other possibilities: 1. A single output stream interspersed with diversion tags to be postprocessed by, say, an awk script to distribute it to the several files. 2. Use syscmd to deliver fragments to files: "echo stuff >>file". To avoid creating hundreds of processes, "stuff" could be gathered in diversions. (This approach is baroque, but it does get the whole job described in a single program.) [I once described a macroprocessor as a "switchyard for data streams". Odd, isn't it, that top-level switching is not included among m4's long list of features.] Doug
