Move xchar_t to libxo.h; add XOF_NO_VA_ARG; Fix hook for custom formatter
Move xchar_t to libxo.h; add XOF_NO_VA_ARG; Fix hook for custom formatter
Add some guts to xo.c
handle escaped values in the format string
fix comment
Add XOF_* flags
fix check_arg; add help info
change xo_emit modifier letters
Add warning flag
update tests
update tests
update tests
update tests
update tests
update tests
update tests
update tests
update tests
update tests
update tests