End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
StringIO#gets
strio.gets(sep=$/, chomp: false) → string or nil
strio.gets(limit, chomp: false) → string or nil
strio.gets(sep, limit, chomp: false) → string or nil
ext/stringio/stringio.c
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static VALUE
strio_gets(int argc, VALUE *argv, VALUE self)
{
struct getline_arg arg;
VALUE str;
if (prepare_getline_args(&arg, argc, argv)->limit == 0) {
struct StringIO *ptr = readable(self);
return rb_enc_str_new(0, 0, get_enc(ptr));
}
str = strio_getline(&arg, readable(self));
rb_lastline_set(str);
return str;
}
See IO#gets.