* module/mes/display.mes (display):
* module/mes/type-0.mes (char?): -1 is not a character.
(eof-object?): New function.
* tests/base.test ("#<eof>"): Test it.
* module/mes/scm.mes (eof-object?): Remove.
(unread-char): Return character (WAS: integer).
* mes.c (type_t): Add CONTINUATION.
(scm_t): Add continuation;
(scm_call_with_current_continuation): New symbol.
(scm_symbol_call_with_current_continuation): New special.
(g_continuations): New global
(CONTINUATION): New field accessor.
(MAKE_CONTINUATION): New make_cell helper.
(car_): Update.
(eval_apply): Implement call/cc.
* module/mes/display.mes (display): Handle continuations.
* module/mes/type-0.mes (<cell:continuation>): New type.
(cell-type-alist): Add it.
(continuation?): New function.
* tests/base.test ("call/cc"): New test.
* mes.c (write_byte): Rename from write_char.
* module/mes/display.mes (display): Fixes for write: char, closure, procedure.
(write-char, write, with-output-to-string): New functions.
* tests/read.test: Include base-0 to see some output.
* tests/display.test: New file.
* GNUmakefile (TESTS): Add it.
* posix.c (stderr_): New function.
* display.c: Remove.
* mes.c: Remove includes. Use stderr_ instead of display_.
(gc_loop): Preserve function's name.
(arity_): New function.
* GNUmakefile (mes.o): Remove dependency on display.
* module/mes/read-0.mes: Use core:stderr instead of display, newline.
(newline): New function.
* module/mes/base-0.mes: Use core:stderr instead of display.
Include (mes display).
* module/mes/display.mes: New file.
* lib.c (assert_defined): Move from mes.c.
(string_to_cstring): Move from posix.c
* build-aux/mes-snarf.scm (function-environment): Initialize function
name with scheme string.
Jan Nieuwenhuizen