when I build no cygwin, certain modules
cause the prompt to be printed twice, like this:
this confuses readline too (completion does not work).
if I do C-l to redraw the screen, the extra prompt
the modules whose presence causes this are
netica and matlab only.
regexp, wildcard, bindings/win32, syscalls, rawsock are
even when I make bindings/win32 use win32.o
(i.e., not dynamic FFI)
it does not double the prompt (so it's not FFI?)