[oguz-ismail2]

Nit pick, but

>FILE* f = fopen(path, "rb");

>...

>if (fseek(f, 0, SEEK_END) != 0) return option_charp_none();

>long len = ftell(f);

does ISO C guarantee this'll work these days? How come there's no fread+realloc fallback?

[Fikoko]

Good catch! You’re right, ftell + fseek isn’t guaranteed to work for all files in ISO C, especially very large or non-seekable ones. In practice, for typical binary files it works fine, but I’ll add a note in the docs. I will consider a fallback using fread + realloc for full portability.