I want to change show for Symbol, Rational, and Bool. Till now, I simply overwrote the existing methods. This works great. I get what I want, even in warn and error and string interpolation, etc. It works flawlessly on v0.4, v0.5, and v0.6. But, this changes the behavior for everyone. So, I want to get the same effect through different means that do not affect other code. Any idea about how to do this ?
One solution is to copy a large amount of base code that uses print, write, show, etc. renaming these functions. Other than changing 15 or 20 lines for Symbol, etc., the code is unchanged. This is works more or less, but is obviously a fragile, bad solution. Another idea is to make a subtype of IO that wraps subtypes of IO. I am allowed to write methods for show for this new type. This is turning out to be complicated and unworkable. Another vague idea is to make a new mime type. Another is to copy IOStream as another type, so that I only have to write methods for Symbol, Rational and Bool again.
