[Haskell-cafe] runhaskell flags: What is going on?

[Albert Y. C. Lai]

On 13-05-03 10:35 AM, Niklas Hambüchen wrote:
>> runhaskell -fno-warn-unused-matches Myfile.hs
> [no output whatsoever but exit code 127]
>
>> runhaskell -fasdf Myfile.hs
> [no output whatsoever but exit code 127]

$ runghc --help
Usage: runghc [runghc flags] [GHC flags] module [program args]

The runghc flags are
     -f /path/to/ghc       Tell runghc where GHC is
     --help                Print this usage information
     --version             Print version number

# how to say end of runghc flags and start of GHC flags?
# it seems undocumented. bad bad bad.
# oh wait, it is documented, read GHC user's guide chapter 3
# actually, read the whole thing
# the GHC user's guide is on your hard disk

$ cat g.hs
main = putStrLn "hello" where v=True

$ runghc -- -fwarn-unused-binds g.hs

g.hs:1:31: Warning: Defined but not used: `v'
hello

# \∩/