In my file-naming, I prefer to name the files
differently before and after pre-processing.
E.g. source_files "*.ftl" and output_files "*.html"
With the combination of ant-contrib's foreach-macro and
fmpp's single file mode, this is possible.
But it is quite inefficient.
Is there a way to have the fmpp task directly behave
like that, i.e. similar to ant's apply task