Request for inline control of warning level

[Simon Marlow]

(I can't resist the opportunity to extend this conversation to 3 Simons :-)

Simon Peyton-Jones wrote:
> | OPTIONS_GHC pragmas allow warnings to be enabled or disabled for a
> | particular file, but there are some limitations:
> |
> |  * It doesn't override command-line settings (being tacked on the start,
> | rather than the end, of the options lists, I believe)
> 
> I don't think this is right -- or if it is, it's a bug.  The OPTIONS_GHC stuff is supposed to override command-line opts

The Users Guide says:

NOTE: the contents of OPTIONS_GHC are prepended to the command-line 
options, so you do have the ability to override OPTIONS_GHC settings via 
the command line.

So GHC is at least behaving as documented.

> |  * It doesn't work on sections of the code, but rather the whole file.
> 
> True, and it'd be great to give more local pragma control -- a good feature request.  Someone might want to work out details of the programmer's eye view and make a Trac feature request

There's a ticket for it:

http://hackage.haskell.org/trac/ghc/ticket/602

Cheers,
	Simon