fastbuf ff-binary ff-string ff-printf ff-unicode \
fb-file carefulio fb-mem fb-temp fb-mmap fb-limfd fb-buffer fb-grow fb-pool fb-atomic fb-param fb-socket \
char-cat char-upper char-lower unicode stkstring \
fastbuf ff-binary ff-string ff-printf ff-unicode \
fb-file carefulio fb-mem fb-temp fb-mmap fb-limfd fb-buffer fb-grow fb-pool fb-atomic fb-param fb-socket \
char-cat char-upper char-lower unicode stkstring \