On: Never create Ruby strings longer than 23 character...

[throw_away]

They probably are when they are inlined like this, else, how would you know the length?

[haileys → throw_away]

The length is stored in a flag.

include/ruby/ruby.h:

    #define RSTRING_EMBED_LEN(str) \
         (long)((RBASIC(str)->flags >> RSTRING_EMBED_LEN_SHIFT) & \
                (RSTRING_EMBED_LEN_MASK >> RSTRING_EMBED_LEN_SHIFT))

    #define RSTRING_LEN(str) \
        (!(RBASIC(str)->flags & RSTRING_NOEMBED) ? \
         RSTRING_EMBED_LEN(str) : \
         RSTRING(str)->as.heap.len)