ghc --interactive now behaves different in regards to line numbers in error messages than previous versions.
They are now incremented with each evaluated expression.
$ ghc --interactive -ignore-dot-ghci Prelude> foo
<interactive>:2:1: Not in scope: `foo' Prelude> bar
<interactive>:3:1: Not in scope: `bar'
Is there a way to disable this (or alternatively reset the counter for a running session)?
Sorry, there's no way to reset it at the moment. What do you need that for?
I use ghci for doctest [1] to evaluate examples. All examples within one Haddock comment are grouped to a /session/. And I reuse the same ghci process to run several sessions. Before a new session is run, I try (as far as possible) to reset ghci into a pristine state. The counter for line numbers is just one more thing that is carried over. A contrived example where this makes a difference is at [2]. I think this is not critical. But putting doctest aside, I still preferred the old behavior. Cheers, Simon [1] http://hackage.haskell.org/package/doctest [2] http://hpaste.org/65736