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)
* It doesn't work on sections of the code, but rather the whole file.
Warnings pragmas on many C++ compilers allow you to locally
enable/disable warnings (and push/pop warning state), so that you can
compile with full warnings and warnings-as-errors, and still do explicit
warning-generating behaviour where you really want to.
I think this would be a nice feature for GHC to have.
It could be argued that it would just be preferable to fix your code so
it generate warnings, but sometimes it just seems cleaner to actually
write what you mean, and make the warnings system ignore it, and that
option currently isn't available.
Thanks,
Simon Frankau.
PS: I'm still mailing bugs/requests rather than using Trac, since my
attempts to login with guest/guest don't seem to stick. I'm still
guessing it's the proxy we have, but any thoughts on the matter would be
appreciated.
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