-ferror-spans and ghci
Simon Marlow
simonmar at microsoft.com
Mon Nov 7 06:19:58 EST 2005
On 07 November 2005 05:01, Ian Zimmerman wrote:
> itz at unicorn:~/src/mindent$ ghci -ferror-spans
> ___ ___ _
> / _ \ /\ /\/ __(_)
> / /_\// /_/ / / | | GHC Interactive, version 6.4, for Haskell
> 98. / /_\\/ __ / /___| | http://www.haskell.org/ghc/
> \____/\/ /_/\____/|_| Type :? for help.
>
> Loading package base-1.0 ... linking ... done.
> Prelude> :a SimpleHaskell
> Compiling Main ( SimpleHaskell.hs, interpreted )
>
> SimpleHaskell.hs:3:0: parse error (possibly incorrect indentation)
> Failed, modules loaded: none.
> Prelude> Leaving GHCi.
>
> wth?
>
> It is in ghci where this option would be most useful, imho. Is it
> implemented?
Yes, it is implemented. Perhaps there was no reasonable span that GHC
could determine for that particular error - can you show us the source
file? Does 'ghc -ferror-spans' give a more detailed error?
Cheers,
Simon
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