- add io.ungetc and string.isutf8
- maintain input order in delete-duplicates
- error for unicode escapes greater than 0x10ffff
- make more builtins constant (use setc instead of set)
- use prog1 in begin0 macro
- array-ref was incorrectly called array-ref! in aliases.scm
- use (void) instead of () in 0-arg C functions
- don't do arithmetic with void*
Since OpenBSD is unable to determine the pathname of a running process,
this allows us to specify the full path to flisp.boot. This will also
come in handy for system wide installs where you want flisp to live in
bin and flisp.boot to live in share or a similar location.