End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Zlib::GzipWriter#puts

puts(*args)

#define rb_gzwriter_puts  rb_io_puts

Same as IO.

See also #putc #tell #printf #write also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0