IRBRC file is loaded every time ruby reaches binding.irb

[tompng]

Description

If you have .irbrc file

puts 'irbrc file loaded'

You can see that binding.irb loads .irbrc every time.

$ irb -f
irb(main):001:0> 4.times{binding.irb}
irbrc file loaded
irb(main):001:0> exit
irbrc file loaded
irb(main):001:0> exit
irbrc file loaded
irb(main):001:0> exit
irbrc file loaded
irb(main):001:0> exit
=> 4
irb(main):002:0> exit
$

binding.irb loads .irbrc even if command line option -f (Don't initialize from configuration file) is specified.
I think it should follow -f option. Maybe it should load only once.
For reference, IRB's command irb (Start a child IRB) does not load .irbrc.

Result of irb_info

irb(main):001:0> irb_info
Ruby version: 3.2.2
IRB version: irb 1.7.1 (2023-07-01)
InputMethod: RelineInputMethod with Reline 0.3.5
.irbrc path: /Users/tomoya.ishida/.irbrc
RUBY_PLATFORM: arm64-darwin22
LANG env: ja_JP.UTF-8
East Asian Ambiguous Width: 1

Terminal Emulator

Terminal.app

Setting Files

# ~/.irbrc
puts 'irbrc file loaded'