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Bug #19548
closedAmbiguous and confusing syntax for alias/undef arguments
Description
This was introduced in https://bugs.ruby-lang.org/issues/8851 and looks really confusing at least because of bare /
.
Here are 3 semantically similar methods, but feels like first two should not be valid:
def method1
undef :*,<<,/,[]
alias :* /
end
def method2
undef :*,
<<,
/,
[]
alias :*
/
end
def method3
undef :*
undef :<<
undef :/
undef :[]
alias :* :/
end
puts RubyVM::InstructionSequence.of(method :method1).disasm
puts RubyVM::InstructionSequence.of(method :method2).disasm
puts RubyVM::InstructionSequence.of(method :method3).disasm
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