Split READ-SOURCE into the part that actually reads files on disk and the part that interprets INCLUDE directives and ===> symbols.
Split READ-SOURCE into the part that actually reads files on disk and
the part that interprets INCLUDE directives and ===> symbols.

The advantage is that I can now call the latter programmatically.

axch/dysvunctional-language,axch/dysvunctional-language,axch/dysvunctional-language,axch/dysvunctional-language