id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
4190	Poor error message for unrecognised flag in GHCi's :set	simonmar		"{{{
Prelude> :set -wibble
ghc: <no location info>: -wibble
Usage: For basic information, try the `--help' option.
Prelude> 
}}}

There's no error message, just a non-existent location, and the `Usage` part is confusing and unhelpful."	bug	closed	normal	7.0.2	Compiler	6.12.3	fixed		michal.terepeta@…	Unknown/Multiple	Unknown/Multiple	Other	Easy (less than 1 hour)