On Monday, April 27, 2015 at 12:34:14 PM UTC-4, Vebjorn Ljosa wrote:
>
> In one of my tests, I was trying to mock something 
> (`clojure.tools.logging/warn`) that happened to be a macro. It had me 
> puzzled for a while until I discovered that `with-redefs` resets the value 
> of the vars after the body is executed, but does not reset the flag that 
> says that the var is a macro:
>

Granted, using `with-redefs` with a macro rarely makes sense because 
macroexpansion has to occur within the extent of `with-redefs` for the 
redefinition to have any effect. (I can't even think of an example where I 
would want to do that, so maybe `with-redefs` should emit a warning when 
it's being asked to redefine a macro.) But in any case, an attempt to use 
`with-redefs` on something that happens to be a macro should not mess up 
the root binding permanently.

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