The :binmode keyword argument isn't applied on Tempfile in JRuby 9.4 #7539
Description
Environment Information
$ jruby -v
jruby 9.4.0.0 (3.1.0) 2022-11-23 95c0ec159f OpenJDK 64-Bit Server VM 17.0.2+0 on 17.0.2+0 +jit [arm64-darwin]$ uname -a
Darwin Jankos-MacBook-Air.local 22.1.0 Darwin Kernel Version 22.1.0: Sun Oct 9 20:14:30 PDT 2022; root:xnu-8792.41.9~2/RELEASE_ARM64_T8103 arm64Expected Behavior
I expected the following to open the Tempfile in binary mode, as is the behavior on Ruby 3.1:
require "tempfile"
tempfile = Tempfile.new("bla.rb", binmode: true)
p tempfile.binmode?Actual Behavior
However, on JRuby 9.4 the tempfile indicates that it's not in binary mode:
false