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infix precedence of backtick functions defined in ghci is not reported by :info

excerpt from ghci:

Prelude> let infixr 9 `f` ; f = (+)
let infixr 9 `f` ; f = (+)
Prelude> 5 * 3 `f` 4
35
Prelude> :info f
f :: Integer -> Integer -> Integer
  	-- Defined at <interactive>:1:19
Prelude> :info `f`
f :: Integer -> Integer -> Integer
  	-- Defined at <interactive>:1:19
Trac metadata
Trac field Value
Version 6.10.1
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component GHCi
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture
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