Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →
instance method
Method#source_location
meth.source_location → [String, Integer]
proc.c
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VALUE
rb_method_location(VALUE method)
{
return method_def_location(rb_method_def(method));
}
Returns the Ruby source filename and line number containing this method or nil if this method was not defined in Ruby (i.e. native).