fmt_strn - write an ASCII string

       fmt_str  copies  at most maxlen leading nonzero bytes from source to dest and returns the number of bytes
       it copied.

       fmt_str does not append \0.

       If dest equals FMT_LEN (i.e. is zero), fmt_strn returns the number of bytes it would have written.

       fmt_strn - write an ASCII string

strncpy(3)

                                                                                                     fmt_strn(3)

#include<libowfat/fmt.h>

       size_t fmt_strn(char *dest,const char *source,
                             size_t maxlen);