Hi,
while doing some more testing on the sdl egg, I came across this
peculiarity. The sdl egg defines a sdl-csi program, that works as
a repl and initialises sdl first. The script is really short and
looks like this:
(import chicken scheme foreign)
(declare
(foreign-declare "#include <SDL.h>\n")
(run-time-macros)
)
(foreign-code "SDL_Init(SDL_INIT_EVERYTHING);")
(use posix)
(use sdl)
(handle-exceptions
exn
exn
(load (string-append (or (getenv "HOME") ".") "/.csirc")))
(for-each load (cdr (argv)))
(repl)
(sdl-quit)
(exit 0)
Now, consider a file like this, called foo.scm:
(use apropos)
(print "SDL things I know about: ~A~%" (apropos 'sdl))
Now when I load it with 'sdl-csi foo.scm' I get an error like this:
Error: unbound variable: apropos
If I change 'use' to 'require-extension' it works as expected.
As I found out the '(use)' statement is an er-transformer that
obviously cannot be invoked in (repl). I don't see the csi program
in core doing something else. So why does (use) work there?
Thanks,
Christian
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