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Support private instance_variables_to_inspect #70

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Merged
mame merged 2 commits into from
Dec 26, 2025
Merged

Support private instance_variables_to_inspect #70

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b5d60e9
Support private instance_variables_to_inspect in pp
hamajyotan Dec 25, 2025
764bb89
Fall back to instance_variables when instance_variables_to_inspect is…
hamajyotan Dec 26, 2025
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2 changes: 1 addition & 1 deletion lib/pp.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -388,7 +388,7 @@ def pretty_print_cycle(q)
# This method should return an array of names of instance variables as symbols or strings as:
# +[:@a, :@b]+.
def pretty_print_instance_variables
ivars = respond_to?(:instance_variables_to_inspect) ? instance_variables_to_inspect : instance_variables
ivars = respond_to?(:instance_variables_to_inspect, true) ? instance_variables_to_inspect || instance_variables : instance_variables
ivars.sort
end

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4 changes: 3 additions & 1 deletion test/test_pp.rb
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Expand Up @@ -146,7 +146,9 @@ def a.pretty_print_instance_variables() [:@b] end

def test_iv_hiding_via_ruby
a = Object.new
def a.instance_variables_to_inspect() [:@b] end
a.singleton_class.class_eval do
private def instance_variables_to_inspect() [:@b] end
end
a.instance_eval { @a = "aaa"; @b = "bbb" }
assert_match(/\A#<Object:0x[\da-f]+ @b="bbb">\n\z/, PP.pp(a, ''.dup))
end
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